Biola Warnings, Watches and Advisories

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. 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 Biola.

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

Coastal Flood Advisory issued September 8 at 11:06PM PDT until September 9 at 11:00PM PDT by NWS San Diego CA

* WHAT...Minor coastal flooding. * WHERE...Beaches of Orange and San Diego Counties. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Most likely during Wednesday evening's high tide. * ADDITIONAL DETAILS...High tides Wednesday at Newport Beach: 6.3 feet at 845 PM. At La Jolla: 6.3 feet at 839 PM. Measured high tides are exceeding predicted levels by 6-7 inches.

Beach Hazards Statement issued September 8 at 8:15PM PDT until September 10 at 3:00AM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerous and potentially life threatening rip currents and breaking waves due to elevated surf expected. * WHERE...Santa Barbara County Southwestern Coast and Santa Barbara County Southeastern Coast. * WHEN...Through late Wednesday night. * IMPACTS...There is an increased risk of ocean drowning. Rip currents will be widespread and very strong, potentially pulling swimmers and surfers out to sea. Waves can wash people off beaches and rocks. Pooling of sea water is possible around high tide at beach areas that is uncommon with normal tidal ranges. Enhanced beach erosion is also possible. Highest impact potential is tonight (Tuesday), with more minor impacts Wednesday through Thursday. * ADDITIONAL DETAILS...High tides near 7 feet will occur each evening between 7PM and 11PM.

Beach Hazards Statement issued September 8 at 8:15PM PDT until September 10 at 3:00AM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerous and potentially life threatening rip currents and breaking waves due to elevated surf expected. * WHERE...Catalina and Santa Barbara Islands, Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN...For the Coastal Flood Advisory, until 11 PM PDT this evening. For the Beach Hazards Statement, from 11 PM PDT this evening through late Wednesday night. * IMPACTS...There is an increased risk of ocean drowning. Rip currents will be widespread and very strong, potentially pulling swimmers and surfers out to sea. Waves can wash people off beaches and rocks. Pooling of sea water is possible around high tide at beach areas that is uncommon with normal tidal ranges. Enhanced beach erosion is also possible. Highest impact potential is tonight (Tuesday) with minor impacts Wednesday through Thursday. * ADDITIONAL DETAILS...High tides near 7 feet will occur each evening between 7PM and 11PM.

Heat Advisory issued September 8 at 7:33PM PDT until September 10 at 10:00PM PDT by NWS San Francisco CA

* WHAT...Hot conditions with temperatures 10 to 20 degrees above normal during the day, with overnight lows also running 10 to 20 degrees above normal. * WHERE...Bay Area and Central Coast. * WHEN...Until 10 PM PDT Thursday. * IMPACTS...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. Hot conditions can cause heat illnesses.

Heat Advisory issued September 8 at 7:32PM PDT until September 10 at 10:00PM PDT by NWS Hanford CA

* WHAT...High temperatures up to 102 and morning lows up to 75 expected. Widespread Moderate HeatRisk will be present with areas of Major HeatRisk in the foothills where the thermal belt is strongest and in urban areas. * WHERE...The San Joaquin Valley, Sierra Nevada Foothills, and West Side Hills along the Coastal Range. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Little to no relief at night in areas of Major HeatRisk. Air conditioning is necessary; fans and open windows at night will not be enough.

Extreme Heat Warning issued September 8 at 3:15PM PDT until September 10 at 8:00PM PDT by NWS Las Vegas NV

* WHAT...Dangerously hot late-season conditions expected with high temperatures up to 112 to 116 in Death Valley and the Colorado River Valley; up to 105 to 110 in the Las Vegas Valley, Moapa Valley, and Pahrump Valley. * WHERE...Portions of northwest Arizona, southeast California, and southern Nevada. * WHEN...From 10 AM PDT /10 AM MST/ to 8 PM PDT /8 PM MST/ Thursday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 80s at the beaches to 90s for higher coastal terrain with low temperatures in the lower to mid 70s. For the Heat Advisory, high temperatures around 80 near the coast to the lower to mid 90s for higher coastal terrain. * WHERE...Orange County Coastal Areas and San Diego County Coastal Areas. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major to Extreme HeatRisk through Wednesday. Warm overnight low temperature will limit relief from the heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 11 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures of 106 to 110 expected with low temperatures in the 80s expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...From 10 AM Wednesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 100 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 80s to low 90s expected. * WHERE...Santa Ana Mountains and Foothills. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 80s at the beaches to 90s for higher coastal terrain with low temperatures in the lower to mid 70s. For the Heat Advisory, high temperatures around 80 near the coast to the lower to mid 90s for higher coastal terrain. * WHERE...Orange County Coastal Areas and San Diego County Coastal Areas. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major to Extreme HeatRisk through Wednesday. Warm overnight low temperature will limit relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures high temperatures in the upper 90s to 107 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 90s to 102 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major HeatRisk through Wednesday. Warm overnight temperatures will limit overnight relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...High temperatures in the 90s below 5500 feet expected. * WHERE...Riverside County Mountains and San Diego County Mountains. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Moderate HeatRisk. Warm overnight temperatures will limit relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 101 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the upper 80s to mid 90s expected. * WHERE...Orange County Inland Areas. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major HeatRisk. Warm overnight temperatures will limit relief from the heat.

Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 106 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the 90s to 102 expected. * WHERE...San Diego County Valleys. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major to locally Extreme HeatRisk. Elevated lows will limit overnight relief from the heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 101 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the upper 80s to mid 90s expected. * WHERE...Orange County Inland Areas. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major HeatRisk. Warm overnight temperatures will limit relief from the heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 106 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the 90s to 102 expected. * WHERE...San Diego County Valleys. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major to locally Extreme HeatRisk. Elevated lows will limit overnight relief from the heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures high temperatures in the upper 90s to 107 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 90s to 102 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Major HeatRisk through Wednesday. Warm overnight temperatures will limit overnight relief from the heat.

Extreme Heat Warning issued September 8 at 1:52PM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 100 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 80s to low 90s expected. * WHERE...Santa Ana Mountains and Foothills. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit relief from the heat.

Extreme Heat Warning issued September 8 at 11:33AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 106 to 114 expected. Major Heat Risk. * WHERE...Portions of Imperial County, including the Imperial Valley. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.

Extreme Heat Warning issued September 8 at 11:33AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 102 to 111 expected. Major Heat Risk. * WHERE...In Arizona, Central La Paz and Parker Valley. In California, Chuckwalla Valley and Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ Wednesday to 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.

Heat Advisory issued September 8 at 11:30AM PDT until September 10 at 10:00PM PDT by NWS Sacramento CA

* WHAT...High temperatures 97 to 104 and low temperatures 65 to 75 expected, with widespread Moderate HeatRisk and areas of Major HeatRisk. * WHERE...The central and southern Sacramento Valley, northern San Joaquin Valley, Delta and Carquinez Strait, Foothills, and portions of the Coast Range. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses, especially to anyone without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Hottest temperatures and areas of Major HeatRisk are now expected to occur on Wednesday. Warmest overnight lows are expected in the Sierra foothills thermal belts.

Extreme Heat Warning issued September 8 at 10:49AM PDT until September 10 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures of 88 to 108 expected. * WHERE...Calabasas and Agoura Hills, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Los Angeles County Beaches, Los Angeles County Inland Coast including Downtown Los Angeles, Los Angeles County San Gabriel Valley, Malibu Coast, Palos Verdes Hills, Western San Fernando Valley, and Western Santa Monica Mountains Recreational Area * WHEN...From 8 AM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas, except likely peaking Thursday for the Santa Barbara South Coast.

Extreme Heat Warning issued September 8 at 10:49AM PDT until September 10 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures of 88 to 100 expected. * WHERE...Catalina and Santa Barbara Islands. * WHEN...From 8 AM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas.

Extreme Heat Warning issued September 8 at 10:49AM PDT until September 10 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures between 92 and 108 expected. * WHERE...Calabasas and Agoura Hills, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Los Angeles County Beaches, Los Angeles County Inland Coast including Downtown Los Angeles, Los Angeles County San Gabriel Valley, Malibu Coast, Palos Verdes Hills, Western San Fernando Valley, and Western Santa Monica Mountains Recreational Area. * WHEN...For the Heat Advisory, until 8 AM PDT Wednesday. For the Extreme Heat Warning, from 8 AM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas.

Heat Advisory issued September 8 at 10:49AM PDT until September 9 at 8:00AM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures between 92 and 108 expected. * WHERE...Calabasas and Agoura Hills, Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Los Angeles County Beaches, Los Angeles County Inland Coast including Downtown Los Angeles, Los Angeles County San Gabriel Valley, Malibu Coast, Palos Verdes Hills, Western San Fernando Valley, and Western Santa Monica Mountains Recreational Area. * WHEN...For the Heat Advisory, until 8 AM PDT Wednesday. For the Extreme Heat Warning, from 8 AM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas.

Coastal Flood Advisory issued September 8 at 9:03AM PDT until September 10 at 1:00AM PDT by NWS San Francisco CA

* WHAT...Up to 1.2 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...From 8 PM this evening to 1 AM PDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.2 ft above normal (6.99 ft MLLW) at 9:59 PM Tuesday 9/8 and 1.0 ft above normal (6.79 ft MLLW) at 10:54 PM Wednesday 9/9. These predictions include up to 0.6 ft of storm 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.