Shasta Lake Warnings, Watches and Advisories

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures in the upper 90s to 106 expected. Nights will be very warm with low temperatures mostly in the mid 60s to lower 70s. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures ranging from the mid 80s to around 90 near the coast to the lower to mid 90s near higher coastal terrain expected. Nights will be very warm with low temperatures mostly in the lower to mid 70s. * WHERE...Orange County Coastal Areas. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures in the 90s to 104 expected. Night will be very warm with low temperatures mostly in the mid 60s to mid 70s. * WHERE...Santa Ana Mountains and Foothills. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to near 100 expected. Nights will be very warm with low temperatures mostly in the lower to mid 70s. * WHERE...Orange County Inland Areas. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures ranging from the mid 80s to lower 90s near the coast to the mid 90s to around 100 for the mesas and other higher coastal terrain expected. Nights will be very warm with low temperatures mostly in the lower to mid 70s. * WHERE...San Diego County Coastal Areas. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures in the upper 90s to 106 expected. Nights will be very warm with low temperatures mostly in the upper 60s to mid 70s. * WHERE...San Diego County Valleys. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Coastal Flood Advisory issued October 1 at 12:20PM PDT until October 2 at 6:00PM PDT by NWS San Francisco CA

* WHAT...Up to 1.1 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay. * WHEN...Until 6 PM PDT Friday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.1 ft above normal (6.92 ft MLLW) at 2:58 PM Thursday 10/01 and 0.9 ft above normal (6.71 ft MLLW) at 3:58 PM Friday 10/02. These predictions include up to 0.7 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Heat Advisory issued October 1 at 12:17PM PDT until October 4 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerously hot conditions with temperatures around 90 near the coast to 103 inland. * WHERE...San Luis Obispo County Inland Central Coast, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Barbara County Inland Central Coast, Santa Lucia Mountains, Santa Ynez Valley, and Southern Salinas Valley. * WHEN...From 10 AM Saturday to 8 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Extreme Heat Warning issued October 1 at 12:17PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerously hot conditions with temperatures up to 85 at the coast and 100 in the mountains and Cuyama valley. * WHERE...Cuyama Valley, Santa Barbara County Interior Mountains, Santa Barbara County Southeastern Coast, Santa Barbara County Southwestern Coast, Santa Cruz and Anacapa Islands, Santa Ynez Mountains Eastern Range, and Santa Ynez Mountains Western Range. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very hot temperatures are likely to continue into the second week of October, possibly requiring an extension of this product.

Extreme Heat Warning issued October 1 at 12:17PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerously hot conditions with temperatures up to 90 at the coast and 105 in the valleys. * WHERE...Coast and valleys of Los Angeles and Ventura Counties. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very hot temperatures are likely to continue into the second week of October, possibly requiring an extension of this product.

Heat Advisory issued October 1 at 9:43AM PDT until October 4 at 10:00PM PDT by NWS San Francisco CA

* WHAT...Temperatures in the middle 90s to near 103 expected. Mild lows in the upper 60s to middle 70s in the higher elevations will limit overnight recovery. * WHERE...The East Bay and San Francisco Bay Shoreline, The Santa Clara Valley and Eastern Hills, Western Sonoma County Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Mountains, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 11 AM Saturday to 10 PM PDT Sunday. * IMPACTS...This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.

Heat Advisory issued October 1 at 9:34AM PDT until October 5 at 10:00PM PDT by NWS Sacramento CA

* WHAT...High temperatures of 94 to 100 degrees expected, with widespread Moderate HeatRisk and areas of Major HeatRisk. * WHERE...Portions of the central and southern Sacramento Valley, northern San Joaquin Valley, Delta and Carquinez Strait, and foothills. * WHEN...From 11 AM Saturday to 10 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hottest days expected on Sunday and Monday.

Heat Advisory issued October 1 at 9:30AM PDT until October 4 at 10:00PM PDT by NWS Hanford CA

* WHAT...High temperatures up to 103 expected. * WHERE...San Joaquin Valley and Sierra Foothills. * WHEN...From 11 AM Saturday to 10 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Moderate to major risk of heat-related illnesses for much of the population, especially those without effective cooling or hydration.

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Shasta Lake.

Use the Radar Maps link provided to understand the trajectory of a storm.