Simi Valley Warnings, Watches and Advisories
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:49AM PDT until September 7 at 8:00PM PDT by NWS Hanford CA
* WHAT...Dangerously hot conditions with high temperatures of 105 to 110 degrees expected. Overnight lows as warm as the upper 70s. Moderate to major heat risk expected with some areas of extreme heat risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
Severe
Likely
Expected
September 6th, 2024 03:49:00 am PDT
September 6th, 2024 03:49:00 am PDT
September 6th, 2024 12:00:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:49AM PDT until September 7 at 8:00PM PDT by NWS Hanford CA
* WHAT...High temperatures of 102 to 107 degrees expected. Overnight lows as warm as the upper 70s. Moderate to major heat risk expected. * WHERE...A portion of central California. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Hot temperatures with little overnight relief may cause heat illnesses.
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; Fresno-Tulare Foothills; South End Sierra Foothills; Kern River Valley
Moderate
Likely
Expected
September 6th, 2024 03:49:00 am PDT
September 6th, 2024 03:49:00 am PDT
September 6th, 2024 12:00:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:29AM PDT until September 6 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Daytime high temperatures will be in the uppers 80s and 90s. Isolated value around 100 degrees are possible, especially away from the coast. * WHERE...San Luis Obispo County Beaches, Santa Barbara County Central Coast Beaches, and Ventura County Beaches. * WHEN...Until 8 PM PDT this evening. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.
San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Ventura County Beaches
Moderate
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:29AM PDT until September 6 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Daytime high temperatures in the 90s to around 106 degrees across the coastal areas. * WHERE...San Luis Obispo County Inland Central Coast and Santa Barbara County Inland Central Coast. * WHEN...Until 8 PM PDT this evening. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.
San Luis Obispo County Inland Central Coast; Santa Barbara County Inland Central Coast
Moderate
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:29AM PDT until September 7 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Dangerously hot conditions with peak temperatures of 95 to 110 possible, hottest Friday. Warm overnight low temperatures will bring little relief from the heat. * WHERE...Antelope Valley, Eastern Antelope Valley Foothills, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Lucia Mountains, Santa Ynez Valley, Southern Salinas Valley, and Western Antelope Valley Foothills. * WHEN...Until 8 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.
Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
Severe
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:29AM PDT until September 9 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Dangerously hot conditions with temperatures up to 115. Warm overnight low temperatures in the 70s to lower 80s will bring little relief from the heat. * WHERE...A portion of southwest California. * WHEN...Until 8 PM PDT Monday. * 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.
Cuyama Valley; Santa Clarita Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Severe
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:29AM PDT until September 9 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Dangerously conditions with daytime temperatures in the upper 80s and 90s. Local values up to 100 degrees are possible, especially away from the coast. Overnight low temperatures will offer little reprieve from the heat. * WHERE...Los Angeles County Beaches, Malibu Coast, and Palos Verdes Hills. * WHEN...Until 8 PM PDT Monday. * 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.
Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills
Severe
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:29AM PDT until September 9 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Dangerously hot conditions with daytime high temperatures up to 118 degrees. Overnight low temperatures will offer little reprieve from the heat. * WHERE...Western San Fernando Valley. * WHEN...Until 8 PM PDT Monday. * 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.
Western San Fernando Valley
Severe
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:29AM PDT until September 9 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
* WHAT...Daytime high temperatures in the 90s to around 102 degrees across the coastal areas with warm overnight low temperatures offering little relief from the heat. * WHERE...Santa Barbara County Southeastern Coast, Santa Barbara County Southwestern Coast, and Ventura County Inland Coast. * WHEN...Until 8 PM PDT Monday. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.
Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Inland Coast
Moderate
Likely
Expected
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:29:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 6 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures in the 90s to 104 expected. Warm nights with low temperatures in the 70s. A cooling trend will begin Saturday though with higher humidity. * WHERE...San Diego County Mountains. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San Diego County Mountains
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 6 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures of 112 to 120 expected. Very warm nights with low temperatures in the 80s to mid 90s. A cooling trend will begin Saturday though with higher humidity. * WHERE...Coachella Valley and San Diego County Deserts. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Coachella Valley; San Diego County Deserts
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 6 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures in the 90s to 102 below 6000 feet expected. A cooling trend will begin Saturday though with higher humidity. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San Bernardino County Mountains; Riverside County Mountains
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 6 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures of 108 to 113 expected. Very warm nights with low temperatures in the 80s and lower 90s. A cooling trend will begin Saturday though with higher humidity. * WHERE...San Gorgonio Pass Near Banning. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San Gorgonio Pass Near Banning
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 6 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures in the upper 90s to 107 expected. A cooling trend will begin Saturday though with higher humidity. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Apple and Lucerne Valleys
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 106 expected. Warm nights with low temperatures in the lower to mid 70s. * WHERE...Orange County Inland Areas. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Orange County Inland
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...High temperatures in the mid 80s at the beaches to the 90s a few miles inland. Temperatures 83 to 95 degrees. Warmest conditions expected away from the immediate coast. * WHERE...Orange County Coastal Areas. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses.
Orange County Coastal
Moderate
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures in the 90s to 104 expected. Warm nights with low temperatures in the mid to upper 70s. * WHERE...Santa Ana Mountains and Foothills. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Santa Ana Mountains and Foothills
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...High temperatures in the mid 80s near the coast to the 90s a few miles inland. * WHERE...San Diego County Coastal Areas. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses.
San Diego County Coastal Areas
Moderate
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures of 102 to 112. Very warm nights with lowest temperatures only falling into the 70s. * WHERE...San Diego County Valleys. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San Diego County Inland Valleys
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 3:21AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA
* WHAT...Dangerously hot conditions with high temperatures of 102 to 114. Very warm nights with lowest temperatures only falling into the mid to upper 70s. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San Bernardino and Riverside County Valleys-The Inland Empire
Severe
Likely
Expected
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:21:00 am PDT
September 6th, 2024 03:30:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 2:41AM PDT until September 6 at 8:00PM PDT by NWS Las Vegas NV
* WHAT...Dangerously hot conditions for early September for elevations less than 3500 feet. High temperatures 105 to 109 in Las Vegas and Pahrump, 102 to 106 in Kingman, 107 to 111 in northeast Clark County, 111 to 115 along the Colorado River Valley from Hoover Dam to Lake Havasu City, 106 to 110 in Barstow and the Morongo Basin, and 116 to 120 at Furnace Creek in Death Valley National Park. * WHERE...Portions of northwest Arizona, southeast California, and southern Nevada. * WHEN...Until 8 PM PDT /8 PM MST/ this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.
Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
Severe
Likely
Expected
September 6th, 2024 02:41:00 am PDT
September 6th, 2024 02:41:00 am PDT
September 6th, 2024 08:00:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 2:00AM PDT until September 6 at 8:00PM PDT by NWS Sacramento CA
* WHAT...Hot temperatures of 100 to 109 degrees expected. * WHERE...Carquinez Strait and Delta, Sacramento Valley, northern San Joaquin Valley and surrounding foothills. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses will be possible, especially for groups that are sensitive to heat. * ADDITIONAL DETAILS...Widespread Moderate to Major HeatRisk today. This level of heat could impact outdoor activities.
Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley; Northeast Foothills/Sacramento Valley; Motherlode
Moderate
Likely
Expected
September 6th, 2024 02:00:00 am PDT
September 6th, 2024 02:00:00 am PDT
September 6th, 2024 08:00:00 pm PDT
Heat Advisory
Heat Advisory issued September 6 at 1:41AM PDT until September 6 at 8:00PM PDT by NWS San Francisco CA
* WHAT...Temperatures 95 to 105 expected. * WHERE...Marin Coastal Range, Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys, East Bay Interior Valleys, Santa Cruz Mountains, Santa Clara Valley including San Jose, Eastern Santa Clara Hills, East Bay Hills, Southern Salinas Valley, Arroyo Seco, Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest, Mountains of San Benito and Interior Monterey County including Pinnacles National Park. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Moderate HeatRisk across inland areas. This level of heat affects individuals sensitive to heat, especially those without effective cooling and/or adequate hydration.
Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
Moderate
Likely
Expected
September 6th, 2024 01:41:00 am PDT
September 6th, 2024 01:41:00 am PDT
September 6th, 2024 08:00:00 pm PDT
Excessive Heat Warning
Excessive Heat Warning issued September 6 at 1:23AM MST until September 6 at 8:00PM MST by NWS Phoenix AZ
* WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 114. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...Until 8 PM MST /8 PM PDT/ this evening. * 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.
Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Severe
Likely
Expected
September 6th, 2024 01:23:00 am PDT
September 6th, 2024 01:23:00 am PDT
September 6th, 2024 03:00:00 pm PDT
Heat Advisory
Heat Advisory issued September 5 at 9:49PM PDT until September 6 at 8:00PM PDT by NWS Eureka CA
* WHAT...High temperatures from 96 to 105 expected. * WHERE...Humboldt Interior, Northern Mendocino Interior, and Southeastern Mendocino Interior. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses.
Northern Humboldt Interior; Southern Humboldt Interior; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Southeastern Mendocino Interior
Moderate
Likely
Expected
September 5th, 2024 09:49:00 pm PDT
September 5th, 2024 09:49:00 pm PDT
September 6th, 2024 06:00:00 am PDT
Heat Advisory
Heat Advisory issued September 5 at 9:49PM PDT until September 6 at 8:00PM PDT by NWS Eureka CA
* WHAT...High temperatures from 97 to 10 expected. * WHERE...Lake County. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses
Northern Lake County; Southern Lake County
Moderate
Likely
Expected
September 5th, 2024 09:49:00 pm PDT
September 5th, 2024 09:49:00 pm PDT
September 6th, 2024 06:00:00 am PDT
Red Flag Warning
Red Flag Warning issued September 5 at 3:40PM PDT until September 7 at 10:00PM PDT by NWS Los Angeles/Oxnard CA
...RED FLAG WARNING IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY EVENING FOR ALL MOUNTAINS AND SOUTHERN SANTA BARBARA COUNTY FOR EXTREME HEAT AND DRY CONDITIONS WITH LOCALLY GUSTY WINDS... .Red Flag conditions and durations are likely over the areas of most concern, including southern Santa Barbara County, the Santa Monica Mountains, and the Santa Susana Mountains. For the rest of the mountains and foothills, while winds will limit the potential for standard red flag criteria, there is a history of large fires with similar weather conditions during this time of the year, especially considering the plume dominated fire potential. So a Red Flag Warning will be in effect to handle this threat. * WINDS...West to north winds 10 to 15 mph with gusts up to 30 mph. Gusty and erratic winds possible with any new fires. * RELATIVE HUMIDITY...Minimums 8 to 15 percent. Poor overnight recoveries of 15 to 30 percent. * TEMPERATURES...Maximums between 100 and 110 common for lower elevations, with minimums between 82 and 92. Isolated highs near 115 possible. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and property.
Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Santa Susana 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
Severe
Likely
Expected
September 5th, 2024 03:40:00 pm PDT
September 5th, 2024 03:40:00 pm PDT
September 6th, 2024 10:30:00 am PDT
Red Flag Warning
Red Flag Warning issued September 5 at 3:40PM PDT until September 7 at 10:00PM PDT by NWS Los Angeles/Oxnard CA
...RED FLAG WARNING IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY EVENING FOR ALL MOUNTAINS AND SOUTHERN SANTA BARBARA COUNTY FOR EXTREME HEAT AND DRY CONDITIONS WITH LOCALLY GUSTY WINDS... .Red Flag conditions and durations are likely over the areas of most concern, including southern Santa Barbara County, the Santa Monica Mountains, and the Santa Susana Mountains. For the rest of the mountains and foothills, while winds will limit the potential for standard red flag criteria, there is a history of large fires with similar weather conditions during this time of the year, especially considering the plume dominated fire potential. So a Red Flag Warning will be in effect to handle this threat. * WINDS...North 15 to 30 mph with gusts up to 45 mph, strongest in the overnight. Gusty and erratic winds possible with any new fires. * RELATIVE HUMIDITY...Minimums 8 to 15 percent inland of the beaches. Poor to minimal overnight recoveries of 12 to 25 percent in the foothills and mountains. * TEMPERATURES...Maximums between 100 and 110 common in the foothills and mountains, with minimums between 82 and 92. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and property.
Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
Severe
Likely
Expected
September 5th, 2024 03:40:00 pm PDT
September 5th, 2024 03:40:00 pm PDT
September 6th, 2024 10:30:00 am PDT
Heat Advisory
Heat Advisory issued September 5 at 2:10PM PDT until September 6 at 10:00PM PDT by NWS Medford OR
* WHAT...Temperatures around 100 to 105 expected in the afternoons. * WHERE...In California, Western Siskiyou County. In Oregon, Central Douglas County, Eastern Curry County and Josephine County, Jackson County, and South Central Oregon Coast. This includes the lower Klamath, Rogue, Illinois, Umpqua, upper Coquille, and Camas valleys. This includes the cities of Somes Bar, Happy Camp, Ashland, Medford, Grants Pass, Cave Junction, Roseburg, Agness, and Powers. * WHEN...Until 10 PM PDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Western Siskiyou County; South Central Oregon Coast; Central Douglas County; Eastern Curry County and Josephine County; Jackson County
Moderate
Likely
Expected
September 5th, 2024 02:10:00 pm PDT
September 5th, 2024 02:10:00 pm PDT
September 6th, 2024 05:00:00 am PDT
Air Quality Alert
Air Quality Alert issued September 3 at 3:43PM PDT by NWS San Diego CA
..AIR QUALITY ALERT FOR ELEVATED OZONE AIR POLLUTION... The South Coast AQMD has issued an air quality alert in the due to high levels of ozone (smog). The air quality alert is in effect Tuesday through Friday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early-evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: Limit the use of gasoline powered lawn and garden equipment until evening hours Conserve electricity and set your air conditioner at a higher temperature Try to delay trips to the gas station and the use of household chemicals until the evening Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. 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. 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. To view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov. To view current and forecasted air quality levels, visit the San Diego County Air Pollution Control District website at www.sdapcd.org/content/sdapcd/air-quality.html. Additional details for this air quality alert may be available at www.sdapcd.org/content/sdapcd/air-quality/smoke-advisory.html
San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Inland
Unknown
Unknown
Unknown
September 3rd, 2024 03:43:00 pm PDT
September 3rd, 2024 03:43:00 pm PDT
September 6th, 2024 09:00:00 pm PDT
Air Quality Alert
Air Quality Alert issued September 3 at 3:03PM PDT by NWS Los Angeles/Oxnard CA
The South Coast Air Quality Management District has issued an Air Quality Alert due to elevated ozone air pollution. This Air Quality Alert is in effect until 8 PM PDT Friday. Elevated levels of ozone, the predominant summertime pollutant, are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: - Limit the use of gasoline powered lawn and garden equipment until evening hours. - Conserve electricity and set your air conditioner at a higher temperature. - Try to delay trips to the gas station and the use of household chemicals until the evening. Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. 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. For the additional information, call the South Coast Air Quality Management District.
Santa Clarita Valley; Los Angeles County Inland Coast including Downtown Los Angeles; Western San Fernando Valley; Eastern San Fernando Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Unknown
Unknown
Unknown
September 3rd, 2024 03:03:00 pm PDT
September 3rd, 2024 03:03:00 pm PDT
September 6th, 2024 08:00:00 pm PDT
Air Quality Alert
Air Quality Alert issued September 3 at 3:03PM PDT by NWS Los Angeles/Oxnard CA
The South Coast Air Quality Management District has issued an Air Quality Alert due to elevated ozone air pollution. This Air Quality Alert is in effect until 8 PM PDT Friday and is for the Los Angeles County portion of the Santa Susana Mountains. Elevated levels of ozone, the predominant summertime pollutant, are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: - Limit the use of gasoline powered lawn and garden equipment until evening hours. - Conserve electricity and set your air conditioner at a higher temperature. - Try to delay trips to the gas station and the use of household chemicals until the evening. Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. 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. For the additional information, call the South Coast Air Quality Management District.
Santa Susana Mountains
Unknown
Unknown
Unknown
September 3rd, 2024 03:03:00 pm PDT
September 3rd, 2024 03:03:00 pm PDT
September 6th, 2024 08:00:00 pm PDT
Excessive Heat Watch
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
San Gorgonio Pass Near Banning
Severe
Observed
Past
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 03:11:11 am PDT
Excessive Heat Watch
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
Apple and Lucerne Valleys
Severe
Observed
Past
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 03:11:11 am PDT
Excessive Heat Watch
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
The Excessive Heat Watch has been replaced. Please see the latest information from NWS San Diego CA on this developing situation.
Coachella Valley; San Diego County Deserts
Severe
Observed
Past
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 02:55:00 am PDT
September 3rd, 2024 03:11:11 am PDT
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Currently
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111°F |
29.87in
Barometer 9%
Humidity South 8.1mph Wind |
| Clear | ||
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