Oakland, CA Warnings, Watches and Advisories

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Excessive Heat Warning

Excessive Heat Warning issued July 13 at 1:02AM MST until July 14 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 95 to 112. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Western portion of Joshua Tree National Park, Eastern portion of Joshua Tree National Park, and Chiriaco Summit. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

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Area
Joshua Tree NP West; Joshua Tree NP East; Chiriaco Summit

Excessive Heat Warning

Excessive Heat Warning issued July 13 at 1:02AM MST until July 14 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 114 and heat indices up to 115 to 118. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Southeastern Imperial County, Salton Sea, and Chuckwalla Mountains. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

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Area
Salton Sea; Chuckwalla Mountains; Imperial County Southeast

Excessive Heat Warning

Excessive Heat Warning issued July 13 at 1:02AM MST until July 14 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 116. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Southwest corner of Imperial County, Western Imperial County, Parker Valley, Imperial Valley, Palo Verde Valley, and Chuckwalla Valley. * WHEN...Until 8 PM MST /8 PM PDT/ Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

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Area
Parker Valley; Imperial County Southwest; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley

Air Quality Alert

Air Quality Alert issued July 12 at 10:24PM PDT by NWS San Diego CA

The South Coast AQMD has issued an air quality alert due to increased particle pollution from blowing dust. The air quality alert is in effect until 11 PM Saturday. In areas directly impacted by high levels of windblown dust, limit your exposure by remaining indoors with windows and doors closed and avoiding vigorous physical activity. Run your air conditioner or an air purifier. If temperatures allow, avoid using whole house fans or swamp coolers that bring in outside air. Exposure to high particle pollution levels can cause serious health problems, including asthma attacks, heart and lung disease symptoms, and increased risk of respiratory infections. People with heart or lung diseases should follow their doctor's advice for dealing with episodes of unhealthy air quality. Children, older adults, and people with respiratory or heart disease should avoid prolonged exposure and strenuous activities when particle pollution levels are high. To help minimize outdoor particle pollution levels: * Carpool, telecommute, reduce trips, or take public transportation * Slow down if driving on dirt roads * Stabilize loose soils Levels of particle pollution can vary hour by hour and by location depending on wind conditions. In South Coast AQMD, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In Imperial County, to view current and forecast air quality within Imperial County visit the Imperial County Air Quality website at http://www.imperialvalleyair.org/ or follow ICAPCD on Twitter, facebook or Instagram (@county_air). For the latest air quality forecasts and information, visit the website at aqmd.gov.

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Area
Coachella Valley

Heat Advisory

Heat Advisory issued July 12 at 10:22PM PDT until July 13 at 9:00AM PDT by NWS Reno NV

* WHAT...Hot daytime temperatures of 95-105 with limited overnight cooling will yield Moderate to Major HeatRisk for lower elevation valleys in the Eastern Sierra. * WHERE...Mono County. * WHEN...Until 9 AM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...The warmest night of the week will be Friday night as moisture arrives and cloud cover limits cooling.

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Area
Mono

Heat Advisory

Heat Advisory issued July 12 at 10:22PM PDT until July 13 at 9:00AM PDT by NWS Reno NV

* WHAT...Hot daytime temperatures in the 90s to around 100 through this week will result in a prolonged period of Moderate to Major HeatRisk and heat health impacts for those sensitive to heat or those without access to effective cooling. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties and Surprise Valley California. * WHEN...Until 9 AM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...The warmest night of the week will be Friday night as moisture arrives and cloud cover limits cooling.

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Area
Surprise Valley California; Lassen-Eastern Plumas-Eastern Sierra Counties

Red Flag Warning

Red Flag Warning issued July 12 at 10:04PM PDT until July 14 at 8:00PM PDT by NWS Reno NV

* CHANGES...The Red Flag Warning for Friday July 12th has expired. The Red Flag Warning for Saturday July 13th and Sunday July 14th remains in effect. * Affected Area...Fire Weather Zone 274 Southern Mono County, Fire Weather Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and and Western Mineral Counties. * Thunderstorms...Scattered thunderstorms with little to no rainfall. * Outflow Winds...Gusts upwards of 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them.

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Area
Southern Mono County; Southern Sierra Front - Alpine/Northern Mono/Southern Lyon/Western Mineral Counties

Red Flag Warning

Red Flag Warning issued July 12 at 10:04PM PDT until July 14 at 8:00PM PDT by NWS Reno NV

* Affected Area...Fire Weather Zone 270 Surprise Valley California, Fire Weather Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Weather Zone 272 Greater Lake Tahoe and Truckee Area, Fire Weather Zone 278 Eastern Lassen County, Fire Weather Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Weather Zone 423 West Humboldt Basin in Pershing County, Fire Weather Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties and Fire Weather Zone 458 Northern Washoe County. * Thunderstorms...Scattered thunderstorms with little to no rainfall. * Outflow Winds...Gusts upwards of 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them.

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Area
Surprise Valley California; Western Lassen, Eastern Plumas, and Eastern Sierra Counties; Greater Lake Tahoe and Truckee Area; Eastern Lassen County; Northern Sierra Front - Carson City/Douglas/Storey/Southern Washoe/Eastern Lyon/Far Southern Lassen Counties; West Humboldt Basin - Pershing County; Lahontan Basin - Churchill and Eastern Mineral Counties; Northern Washoe County

Red Flag Warning

Red Flag Warning issued July 12 at 7:48PM PDT until July 13 at 8:00PM PDT by NWS Medford OR

...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 284 AND 285... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...For the Red Flag Warning for Saturday, all areas along and east of Highway 97. For the Fire Weather Watch on Sunday, all areas. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late Saturday night into Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley

Fire Weather Watch

Fire Weather Watch issued July 12 at 7:48PM PDT until July 14 at 9:00PM PDT by NWS Medford OR

* IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...All of Fire Weather Zone 280, including the Shelly Fire. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late Saturday night into Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Western Klamath National Forest

Fire Weather Watch

Fire Weather Watch issued July 12 at 7:48PM PDT until July 14 at 9:00PM PDT by NWS Medford OR

...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 284 AND 285... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...For the Red Flag Warning for Saturday, all areas along and east of Highway 97. For the Fire Weather Watch on Sunday, all areas. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late Saturday night into Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

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Area
Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley

Heat Advisory

Heat Advisory issued July 12 at 7:42PM PDT until July 13 at 9:00PM PDT by NWS San Francisco CA

* WHAT...Temperatures up to 100 expected. * WHERE...Santa Lucia Mountains and Los Padres National Forest and Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses to occur.

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Area
Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

Heat Advisory

Heat Advisory issued July 12 at 7:42PM PDT until July 13 at 9:00PM PDT by NWS San Francisco CA

* WHAT...Temperatures up to 95 expected. * WHERE...North Bay Interior Mountains, East Bay Interior Valleys, Santa Clara Valley, including San Jose, Eastern Santa Clara Hills and East Bay Hills. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses to occur.

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Area
North Bay Interior Mountains; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 6:26PM PDT until July 13 at 9:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures of 110 to 115. Low temperatures only in the 80s. * WHERE...Coachella Valley and San Diego County Deserts. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major heat risk.

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Area
Coachella Valley; San Diego County Deserts

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 6:26PM PDT until July 13 at 9:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures 100 to 105. Low temperatures in the 70s. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Thunderstorms are possible with gusty winds. Major heat risk.

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Area
Apple and Lucerne Valleys

Fire Weather Watch

Fire Weather Watch issued July 12 at 5:42PM PDT until July 14 at 9:00PM PDT by NWS San Diego CA

Increasing tropical moisture in southerly monsoon flow on top of a warm dry air mass will result in scattered showers and thunderstorms on Saturday. Some of these storm could have lightning and erratic strong wind gusts along with brief heavy rain. The threat for wildfire starts is significant due to dry fuels from the recent heat wave. Any ignitions could be accompanied by strong winds creating extreme fire behavior. The National Weather Service in San Diego has issued a Fire Weather Watch for dry lightning and gusty outflow winds, which is in effect from Saturday morning through Sunday evening. * IMPACTS...Strong wind gusts and lightning could cause wildfire starts. * LOCATION...San Bernardino County Mountains-Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest, Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest, Victor Valley, Apple Valley, Lucerne Valley, Johnson Valley and San Gorgonio Pass Near Banning. * THUNDERSTORMS...Gusty erratic winds, scattered lightning and brief rainfall. * OUTFLOW WINDS...Erratic wind gusts of 35 to 50 mph in stronger thunderstorms.

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Area
San Bernardino County Mountains-Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest; Riverside County Mountains-Including The San Jacinto Ranger District Of The San Bernardino National Forest; Victor Valley - Apple Valley - Lucerne Valley - Johnson Valley; San Gorgonio Pass Near Banning

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 3:38PM PDT until July 13 at 9:00PM PDT by NWS Medford OR

* WHAT...High temperatures of 100 to 110 degrees with lows of 65 to 70 degrees are expected. * WHERE...Western and central Siskiyou County. This includes the cities of Yreka, Weed, Etna, Happy Camp, Mt Shasta City, and Dunsmuir. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Area rivers will be cold and can cause shock to swimmers.

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Area
Western Siskiyou County; Central Siskiyou County; South Central Siskiyou County

Heat Advisory

Heat Advisory issued July 12 at 3:38PM PDT until July 13 at 9:00PM PDT by NWS Medford OR

* WHAT...High temperatures of 95 to 102 degrees with lows in the mid to upper 50s expected. * WHERE...In California, Modoc County and eastern Siskiyou County. This includes the cities and communities of Macdoel, Tulelake, Pondosa, Bray, Tennant, Dorris, Tionesta, Alturas, and Adin. In Oregon, Klamath and Lake counties. This includes the cities of Klamath Falls, Chemult, Summer Lake, Chiloquin, Malin, Keno, Sprague River, and Lakeview. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses. Area rivers will be cold and can cause shock to swimmers.

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Area
North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

Air Quality Alert

Air Quality Alert issued July 12 at 3:12PM MST by NWS Phoenix AZ

The South Coast AQMD has issued an air quality alert due to increased particle pollution from blowing dust. The air quality alert is in effect from 2 PM Friday to 11 PM Saturday. In areas directly impacted by high levels of windblown dust, limit your exposure by remaining indoors with windows and doors closed and avoiding vigorous physical activity. Run your air conditioner or an air purifier. If temperatures allow, avoid using whole house fans or swamp coolers that bring in outside air. Exposure to high particle pollution levels can cause serious health problems, including asthma attacks, heart and lung disease symptoms, and increased risk of respiratory infections. People with heart or lung diseases should follow their doctor's advice for dealing with episodes of unhealthy air quality. Children, older adults, and people with respiratory or heart disease should avoid prolonged exposure and strenuous activities when particle pollution levels are high. To help minimize outdoor particle pollution levels: * Carpool, telecommute, reduce trips, or take public transportation * Slow down if driving on dirt roads * Stabilize loose soils Levels of particle pollution can vary hour by hour and by location depending on wind conditions. In South Coast AQMD, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In Imperial County, to view current and forecast air quality within Imperial County visit the Imperial County Air Quality website at http://www.imperialvalleyair.org/ or follow ICAPCD on Twitter, facebook or Instagram (@county_air).

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Area
Chuckwalla Mountains; Chiriaco Summit

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 2:54PM PDT until July 13 at 9:00PM PDT by NWS Eureka CA

* WHAT...Dangerously hot conditions with many valleys reaching between 100 and 107 degrees. * WHERE...Northern Mendocino Interior. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities.

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Area
Northwestern Mendocino Interior; Northeastern Mendocino Interior

Heat Advisory

Heat Advisory issued July 12 at 2:54PM PDT until July 13 at 9:00PM PDT by NWS Eureka CA

* WHAT...High temperatures between 97 and 103 degrees. * WHERE...Southern Humboldt. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities.

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Area
Southwestern Humboldt; Southern Humboldt Interior

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 2:54PM PDT until July 13 at 9:00PM PDT by NWS Eureka CA

* WHAT...Dangerously hot conditions with widespread locations reaching between 105 and 113 degrees. * WHERE...Lake County and Southeastern Mendocino Interior. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities.

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Area
Southeastern Mendocino Interior; Northern Lake County; Southern Lake County

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 2:54PM PDT until July 13 at 9:00PM PDT by NWS Eureka CA

* WHAT...Dangerously hot conditions with high temperatures between 105 and 115 degrees. * WHERE...Trinity County and Northern Humboldt Interior. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities.

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Area
Northern Humboldt Interior; Northern Trinity; Southern Trinity

Heat Advisory

Heat Advisory issued July 12 at 2:54PM PDT until July 13 at 9:00PM PDT by NWS Eureka CA

* WHAT...Widespread temperatures between 95 and 103 degrees. * WHERE...Southwestern Mendocino Interior. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities.

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Area
Southwestern Mendocino Interior

Red Flag Warning

Red Flag Warning issued July 12 at 2:40PM PDT until July 14 at 9:00PM PDT by NWS Las Vegas NV

Scattered thunderstorms are expected to develop Saturday and Sunday afternoons along the Sierra crest. Limited low level moisture and swift storm motion will make the chance of wetting rain low, increasing dry lightning concerns. * THUNDERSTORMS...Scattered thunderstorms with little to no rainfall. * OUTFLOW WINDS...40 to 50 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

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Area
Owens Valley/Southern Inyo Forest

Red Flag Warning

Red Flag Warning issued July 12 at 1:58PM PDT until July 14 at 9:00AM PDT by NWS Hanford CA

...NEW RED FLAG WARNING and FIRE WEATHER WATCH... .Extended through eastern Kern County and the Tehachapis. Then a Fire Weather Watch starting at 9a Saturday for Fire Weather Zone 597, which is mainly for the Tejon Pass area along I-5 and the high elevation communities of Pine Mountain Club and Frazier Park. The National Weather Service in Hanford has issued a Red Flag Warning, which is in effect until 9 AM PDT Sunday. * AFFECTED AREA...Southern Sierra Nevada from Kern County through Yosemite National Park. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Minimum daytime humidity levels as 10% or less. * THUNDERSTORMS...20-30% chance of thunderstorms - including dry lightning - each afternoon from Friday through Sunday. Less than a 10% chance of wetting rain with these storms. Thunderstorm potential is the greatest in the afternoon and evening on Saturday and Sunday * IMPACTS...Any fires that develop will likely spread rapidly due to dry fuels. Outdoor burning is not recommended. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread.

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Area
Indian Wells Valley; Kern County Desert; Tehachapi Area

Fire Weather Watch

Fire Weather Watch issued July 12 at 1:58PM PDT until July 14 at 9:00AM PDT by NWS Hanford CA

...NEW RED FLAG WARNING and FIRE WEATHER WATCH... .Extended through eastern Kern County and the Tehachapis. Then a Fire Weather Watch starting at 9a Saturday for Fire Weather Zone 597, which is mainly for the Tejon Pass area along I-5 and the high elevation communities of Pine Mountain Club and Frazier Park. The National Weather Service in Hanford has issued a Fire Weather Watch, which is in effect from Saturday morning through Sunday morning. * AFFECTED AREA...Fire weather zone 597. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Below 15% RH. * THUNDERSTORMS.. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread.

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Area
Fort Tejon

Red Flag Warning

Red Flag Warning issued July 12 at 1:58PM PDT until July 14 at 9:00PM PDT by NWS Hanford CA

...NEW RED FLAG WARNING and FIRE WEATHER WATCH... .Extended through eastern Kern County and the Tehachapis. Then a Fire Weather Watch starting at 9a Saturday for Fire Weather Zone 597, which is mainly for the Tejon Pass area along I-5 and the high elevation communities of Pine Mountain Club and Frazier Park. * AFFECTED AREA...Southern Sierra Nevada from Kern County through Yosemite National Park. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Minimum daytime humidity levels as 15% or less. * THUNDERSTORMS...20-30% chance of thunderstorms - including dry lightning - each afternoon from Friday through Sunday. Less than a 10% chance of wetting rain with these storms. Thunderstorm potential is the greatest in the afternoon and evening on Saturday and Sunday * IMPACTS...Any fires that develop will likely spread rapidly due to dry fuels. Outdoor burning is not recommended. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread.

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Area
Central Sierra; North Kings River; Sequoia Kings; Lake Isabella

Heat Advisory

Heat Advisory issued July 12 at 1:19PM PDT until July 13 at 9:00PM PDT by NWS Sacramento CA

* WHAT...High temperatures from 90 to 103. Moderate to Major HeatRisk, with areas of Extreme HeatRisk. * WHERE...Burney Basin / Eastern Shasta County, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. Area waterways will continue to run cold and fast, creating dangerous conditions for those seeking relief in rivers and lakes.

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Area
Burney Basin / Eastern Shasta County; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

Heat Advisory

Heat Advisory issued July 12 at 1:19PM PDT until July 13 at 9:00PM PDT by NWS Sacramento CA

* WHAT...High temperatures around 90 to 100 degrees expected. Overnight lows mainly in the mid 60s to low 70s. Widespread Moderate to Major HeatRisk. * WHERE...Carquinez Strait and Delta. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. Area waterways will continue to run cold and fast, creating dangerous conditions for those seeking relief in rivers and lakes.

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Area
Carquinez Strait and Delta

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 1:19PM PDT until July 13 at 9:00PM PDT by NWS Sacramento CA

* WHAT...Dangerously hot conditions with high temperatures 105 to 115. Limited overnight relief with lows mainly in the 70s to lower 80s. Widespread Major to Extreme HeatRisk continues. * WHERE...Central Sacramento Valley, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, Northern Sacramento Valley, and Shasta Lake Area / Northern Shasta County. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. Area waterways will continue to be cold, creating dangerous conditions for those seeking relief in rivers and lakes.

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Area
Shasta Lake Area / Northern Shasta County; Northern Sacramento Valley; Central Sacramento Valley; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley; Motherlode

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 1:19PM PDT until July 13 at 9:00PM PDT by NWS Sacramento CA

* WHAT...Dangerously hot conditions with high temperatures 97 to 105 expected. Limited overnight relief with lows mainly in the upper 60s to lower 80s. Widespread Major HeatRisk with localized Extreme HeatRisk. * WHERE...Northern San Joaquin Valley and Southern Sacramento Valley. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. Area waterways will continue to be cold, creating dangerous conditions for those seeking relief in rivers and lakes.

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Area
Southern Sacramento Valley; Northern San Joaquin Valley

Fire Weather Watch

Fire Weather Watch issued July 12 at 1:18PM PDT until July 13 at 9:00PM PDT by NWS Los Angeles/Oxnard CA

...FIRE WEATHER WATCH IN EFFECT FROM 9 AM PDT SATURDAY MORNING THROUGH 9 PM PDT SATURDAY EVENING FOR DRY THUNDERSTORMS FOR INTERIOR MOUNTAINS, FOOTHILLS, AND VALLEYS OF LOS ANGELES, VENTURA, SANTA BARBARA, AND SAN LUIS OBISPO COUNTIES... .An upper-atmospheric weather disturbance off the Pacific Coast will interact with an influx of monsoonal moisture to create the possibility for isolated to widely scattered thunderstorms across portions of Southern California on Saturday. Average thunderstorm motions will range from north-northwestward to north- northeastward at 20 to 35 mph. While the risk for thunderstorms will be present anytime from early Saturday morning through Saturday night, the most-likely time window for thunderstorms will be 9 AM PDT Saturday morning through 9 PM PDT Saturday evening. Thunderstorms will be high-based and will produce little to no precipitation. And given the moderate storm motions, isolated to widely scattered dry thunderstorms will be possible on Saturday. Thunderstorms will also be capable of producing gusty, erratic outflow winds, gusting upwards of 45 to 60 mph on a localized basis. With the ongoing extended heatwave, contributing to significant drying of fuels, a significant fire-weather risk will exist on Saturday. The National Weather Service in Los Angeles/Oxnard has issued a Fire Weather Watch for thunderstorms, which is in effect from Saturday morning through Saturday evening. * THUNDERSTORMS...Isolated to widely scattered dry thunderstorms possible, capable of lightning-induced ignitions. Thunderstorms will be high-based, and produce little, if any, precipitation. * OUTFLOW WINDS...Strong and erratic outflow winds produced by the dry thunderstorms, locally gusting to 45 to 60 mph, will have the potential to cause rapid spread of any ongoing fires, as well as any new fires. This includes the ongoing Lake Fire in Santa Barbara County. * IMPACTS...Conditions will be favorable for lightning-induced ignitions from dry thunderstorms. Conditions will also be favorable for rapid wildfire spread and extreme fire behavior due to strong and erratic outflow winds. These conditions could threaten life and property. In addition, hot temperatures will bring the potential for large vertical plume growth. These conditions have the potential to be EXTREMELY DANGEROUS for wildfire operations.

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Area
Cuyama Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 10:44AM PDT until July 14 at 10:00AM PDT by NWS Hanford CA

* WHAT...High temperatures 15 to 20 degrees above normal. Major to Extreme HeatRisk. * WHERE...San Joaquin River Canyon. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...Well above normal temperatures, even for the high Sierra, will make outdoor activities more likely to cause heat-related illnesses than folks are used to even at high elevation.

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Area
San Joaquin River Canyon

Heat Advisory

Heat Advisory issued July 12 at 10:44AM PDT until July 14 at 10:00AM PDT by NWS Hanford CA

* WHAT...High temperatures 15 to 20 degrees above normal. Moderate to Major HeatRisk. * WHERE...Yosemite National Park above 5000 feet. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...Well above normal temperatures, even for the high Sierra, will make outdoor activities more likely to cause heat-related illnesses than folks are used to even at high elevation. * ADDITIONAL DETAILS...Impacts likely in health systems, heat-sensitive industries and infrastructure.

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Area
Yosemite NP outside of the valley

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 10:44AM PDT until July 14 at 10:00AM PDT by NWS Hanford CA

* WHAT...Dangerously hot conditions and Extreme HeatRisk. * WHERE...Indian Wells Valley and Mojave Desert. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure.

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Area
Indian Wells Valley; Mojave Desert

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 10:44AM PDT until July 14 at 10:00AM PDT by NWS Hanford CA

* WHAT...Dangerously hot conditions with a 50% probability of temperatures 105 degrees or hotter. * WHERE...Grapevine. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure.

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Area
Grapevine

Excessive Heat Warning

Excessive Heat Warning issued July 12 at 10:44AM PDT until July 14 at 10:00AM PDT by NWS Hanford CA

* WHAT...Dangerously hot conditions as extreme Heat-Risk will occur through the duration of this heat wave. * WHERE...A portion of central California. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure.

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Area
West Side Mountains north of 198; Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; West Side Mountains South of 198; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; South End Sierra Foothills; South End of the Lower Sierra; Yosemite Valley; Kern River Valley; Tehachapi; Frazier Mountain Communities; Mojave Desert Slopes

Red Flag Warning

Red Flag Warning issued July 12 at 10:20AM PDT until July 14 at 8:00PM PDT by NWS Sacramento CA

The National Weather Service in Sacramento has issued a Red Flag Warning for thunderstorms and strong outflow winds, which is in effect from 5 AM Saturday to 8 PM PDT Sunday. * Affected Area...Fire Zone 221 Stanislaus NF West of the Sierra Crest and Fire Zone 269 Northern Sierra Including the Tahoe and ElDorado NF/S West of the Sierra Crest. * Isolated dry thunderstorms are expected both Saturday and Sunday, with greatest risk occurring on Saturday. * Gusty erratic winds will be possible in and near these thunderstorms. * Impacts...Lightning can create new fire starts and may combine with gusty winds to cause a fire to rapidly grow in size and intensity.

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Area
Stanislaus National Forest; Tahoe - Eldorado National Forest

Excessive Heat Warning

Excessive Heat Warning issued July 11 at 8:38PM PDT until July 13 at 9:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerously hot conditions with high temperatures of 102 to 112 degrees, and very warm nights. * WHERE...A portion of southwest California. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors.

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Area
Cuyama Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
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Currently

A Few Clouds 57°F
29.85in
Barometer
93%
Humidity
Northwest 12.7mph
Wind
A Few Clouds

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