Big Sur, California
Regional Weather Alerts
| Alert: | Extreme Heat Warning |
| Area(s): | 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 |
| Effective: | 21aaeor27aa -> 22apeor0ap |
| Onset: | 21aaeor27aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Phoenix AZ on 21aaeor27aa |
| Headline: | Extreme Heat Warning issued August 21 at 9:27AM MST until August 22 at 8:00PM MST by NWS Phoenix AZ |
| Description: |
* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 116. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...Until 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. |
| Alert: | Red Flag Warning |
| Area(s): | Fort Tejon |
| Effective: | 21aaeor50aa -> 23apeor0ap |
| Onset: | 21aaeor50aa -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 21aaeor50aa |
| Headline: | Red Flag Warning issued August 21 at 6:50AM PDT until August 23 at 9:00PM PDT by NWS Hanford CA |
| Description: |
...RED FLAG WARNING IN EFFECT THROUGH SATURDAY EVENING FOR FRAZIER PARK AND GRAPEVINE AREAS IN KERN COUNTY DUE TO LOW HUMIDITY AND LOCALLY BREEZY WINDS... * AFFECTED AREA...Fire weather zone 597 Fort Tejon, including the Frazier Park and Grapevine areas. * WIND...Southerly winds 10-15 mph with gusts 25 to 30 mph possible at times. * HUMIDITY...Minimum values around 8 to 15 percent with the lowest values expected today. * THUNDERSTORMS...Isolated thunderstorms may develop on Friday until Sunday and produce gusty and erratic outflow winds. Isolated dry lightning is also possible. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Heat Advisory |
| Area(s): | Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Southeast San Joaquin Valley; Kern River Valley |
| Effective: | 21aaeor47aa -> 24aaeor0aa |
| Onset: | 22apeor0ap -> 21apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 21aaeor47aa |
| Headline: | Heat Advisory issued August 21 at 6:47AM PDT until August 24 at 8:00AM PDT by NWS Hanford CA |
| Description: |
* WHAT...High temperatures up to 107 expected. Warm overnight lows in the low to mid 70s from Friday until Sunday morning. * WHERE...A portion of central California. * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | West Side Mountains north of 198; Coalinga - Avenal; Fresno-Clovis; West Side Mountains South of 198; Buena Vista; Bakersfield; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills |
| Effective: | 21aaeor47aa -> 24aaeor0aa |
| Onset: | 22apeor0ap -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 21aaeor47aa |
| Headline: | Extreme Heat Warning issued August 21 at 6:47AM PDT until August 24 at 8:00AM PDT by NWS Hanford CA |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures up to 105 expected. Warm overnight lows in the mid 70s to lower 80s from Friday until Sunday morning. * WHERE...Bakersfield, Buena Vista, Coalinga - Avenal, Fresno-Clovis, Fresno-Tulare Foothills, Mariposa Madera Foothills, South End San Joaquin Valley, South End Sierra Foothills, West Side Mountains South of 198, and West Side Mountains north of 198. * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Indian Wells Valley; Mojave Desert Slopes; Mojave Desert |
| Effective: | 21aaeor47aa -> 24aaeor0aa |
| Onset: | 21apeor0ap -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 21aaeor47aa |
| Headline: | Extreme Heat Warning issued August 21 at 6:47AM PDT until August 24 at 8:00AM PDT by NWS Hanford CA |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures 105 to 110 degrees possible. Warm overnight lows in the mid 70s to lower 80s from this morning until Sunday morning. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...From 11 AM this morning to 8 AM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Heat Advisory |
| Area(s): | 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 |
| Effective: | 21aaeor25aa -> 23apeor0ap |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 21aaeor25aa |
| Headline: | Heat Advisory issued August 21 at 6:25AM PDT until August 23 at 9:00PM PDT by NWS San Francisco CA |
| Description: |
* WHAT...Daytime temperatures from the 90s to near 107 expected. Nighttime temperatures in the hills 60s to mid 70s. * WHERE...Interior Monterey County and the Santa Lucia Range, Interior San Benito County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 10 AM this morning to 9 PM PDT Saturday. * IMPACTS...Hot conditions can cause heat illnesses. 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. |
| Alert: | Heat Advisory |
| Area(s): | North Bay Interior Mountains; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills |
| Effective: | 21aaeor25aa -> 23apeor0ap |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 21aaeor25aa |
| Headline: | Heat Advisory issued August 21 at 6:25AM PDT until August 23 at 9:00PM PDT by NWS San Francisco CA |
| Description: |
* WHAT...Daytime temperatures in the 90s to low 100s expected. Nighttime temperatures in the low 60s in the Santa Clara Valley and upper 60s to mid 70s at higher elevations. * WHERE...The Santa Clara Valley and Eastern Hills, The East Bay Hills and Valleys, and North Bay Interior Mountains. * WHEN...From 10 AM this morning to 9 PM PDT Saturday. * IMPACTS...Hot conditions can cause heat illnesses. 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. |
| Alert: | Heat Advisory |
| Area(s): | North Bay Interior Valleys; San Francisco Bay Shoreline |
| Effective: | 21aaeor25aa -> 22aaeor0aa |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 21aaeor25aa |
| Headline: | Heat Advisory issued August 21 at 6:25AM PDT until August 21 at 10:00PM PDT by NWS San Francisco CA |
| Description: |
* WHAT...Temperatures in the 80s to the middle 90s expected near the Bay and 90s to near 100 degrees interior North Bay. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...From 10 AM this morning to 10 PM PDT this evening. * IMPACTS...Hot conditions can cause heat illnesses. 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. |
| Alert: | Heat Advisory |
| Area(s): | Santa Cruz Mountains |
| Effective: | 21aaeor25aa -> 23aaeor0aa |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 21aaeor25aa |
| Headline: | Heat Advisory issued August 21 at 6:25AM PDT until August 22 at 10:00PM PDT by NWS San Francisco CA |
| Description: |
* WHAT...Daytime temperatures in the 90s with nighttime temperatures ranging from upper 50s in San Mateo County to mid 70s along the ridge. * WHERE...The Santa Cruz Mountains. * WHEN...From 10 AM this morning to 10 PM PDT Friday. * IMPACTS...Hot conditions can cause heat illnesses. 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. |
| Alert: | Heat Advisory |
| Area(s): | Northeast Siskiyou and Northwest Modoc Counties; Modoc County; South Central Oregon Cascades; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County |
| Effective: | 21aaeor37aa -> 23apeor0ap |
| Onset: | 22apeor0ap -> 21apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Medford OR on 21aaeor37aa |
| Headline: | Heat Advisory issued August 21 at 3:37AM PDT until August 23 at 8:00PM PDT by NWS Medford OR |
| Description: |
* WHAT...Hot conditions with high temperatures of 95 to 100 degrees. Overnight low temperatures of 50 to 60 degrees. * WHERE...All areas from the Cascades eastward in Oregon, including Union Creek, Klamath Falls, Chiloquin, Crescent, Fort Rock, Bly and Lakeview. Also all of eastern Siskiyou County and Modoc County in Northeast California, including Dorris, Macdoel, Tulelake, Adin, Alturas and Likely. * WHEN...From 1 PM Friday to 8 PM PDT Saturday. * IMPACTS...Unusually hot temperatures will increase risk for heat related illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Western Siskiyou County; Central Siskiyou County |
| Effective: | 21aaeor37aa -> 25apeor0ap |
| Onset: | 22apeor0ap -> 21apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Medford OR on 21aaeor37aa |
| Headline: | Extreme Heat Warning issued August 21 at 3:37AM PDT until August 25 at 8:00PM PDT by NWS Medford OR |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures of 100 to 110 degrees expected. Overnight low temperatures of 60 to 70 degrees. * WHERE...The valleys in central and western Siskiyou County. This includes Weed, Yreka, Montague, Etna, Fort Jones, Happy Camp and Somes Bar. * WHEN...From 1 PM Friday to 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. Warm overnight temperatures will provide little relief from hot daytime temperatures. |
| Alert: | Heat Advisory |
| Area(s): | Northern Trinity; Southern Trinity; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County |
| Effective: | 21aaeor31aa -> 24aaeor0aa |
| Onset: | 21apeor0ap -> 21apeor45ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Eureka CA on 21aaeor31aa |
| Headline: | Heat Advisory issued August 21 at 3:31AM PDT until August 23 at 11:00PM PDT by NWS Eureka CA |
| Description: |
* WHAT...High temperatures from 100 to 110 with moderate to isolated Major HeatRisk. * WHERE...Trinity County, Lake County, and Northeastern Mendocino Interior. * WHEN...From 11 AM this morning to 11 PM PDT Saturday. * IMPACTS...Hot temperatures and warm nights may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Northern Humboldt Interior; Southern Humboldt Interior; Northwestern Mendocino Interior; Southeastern Mendocino Interior |
| Effective: | 21aaeor31aa -> 24aaeor0aa |
| Onset: | 22apeor0ap -> 21apeor45ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Eureka CA on 21aaeor31aa |
| Headline: | Heat Advisory issued August 21 at 3:31AM PDT until August 23 at 11:00PM PDT by NWS Eureka CA |
| Description: |
* WHAT...Temperatures from 100 to 109 with moderate to isolated Major HeatRisk. * WHERE...Humboldt Interior, Northwestern Mendocino Interior, and Southeastern Mendocino Interior. * WHEN...From 11 AM Friday to 11 PM PDT Saturday. * IMPACTS...Hot temperatures and warm night may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Santa Ana Mountains and Foothills; Orange County Inland |
| Effective: | 21aaeor45aa -> 22apeor0ap |
| Onset: | 21apeor0ap -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Heat Advisory issued August 21 at 2:45AM PDT until August 22 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Temperatures up to 96 expected. * WHERE...Orange County Inland Areas and Santa Ana Mountains and Foothills. * WHEN...From 10 AM this morning to 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains |
| Effective: | 21aaeor45aa -> 22apeor0ap |
| Onset: | 21aaeor45aa -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Heat Advisory issued August 21 at 2:45AM PDT until August 22 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Temperatures up to 102 for elevations below 5500 feet expected. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | San Bernardino and Riverside County Valleys-The Inland Empire |
| Effective: | 21aaeor45aa -> 23apeor0ap |
| Onset: | 21aaeor45aa -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Heat Advisory issued August 21 at 2:45AM PDT until August 23 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Temperatures up to 108 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Today and Friday are expected to be the hottest days. |
| Alert: | Extreme Heat Warning |
| Area(s): | Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning |
| Effective: | 21aaeor45aa -> 23apeor0ap |
| Onset: | 21aaeor45aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Extreme Heat Warning issued August 21 at 2:45AM PDT until August 23 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 116. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Today and Friday are expected to be the hottest days. |
| Alert: | Extreme Heat Warning |
| Area(s): | Apple and Lucerne Valleys |
| Effective: | 21aaeor45aa -> 23apeor0ap |
| Onset: | 21aaeor45aa -> 21apeor30ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Extreme Heat Warning issued August 21 at 2:45AM PDT until August 23 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 108. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Today and Friday are expected to be the hottest days. |
| Alert: | Heat Advisory |
| Area(s): | San Diego County Inland Valleys |
| Effective: | 21aaeor45aa -> 22apeor0ap |
| Onset: | 21aaeor45aa -> 21apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 21aaeor45aa |
| Headline: | Heat Advisory issued August 21 at 2:45AM PDT until August 22 at 8:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Temperatures up to 104 for the inland valleys expected. * WHERE...San Diego County Valleys. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Owens Valley; 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; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County |
| Effective: | 21aaeor39aa -> 24aaeor0aa |
| Onset: | 21aaeor39aa -> 22aaeor0aa |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Las Vegas NV on 21aaeor39aa |
| Headline: | Extreme Heat Warning issued August 21 at 2:39AM PDT until August 23 at 11:00PM PDT by NWS Las Vegas NV |
| Description: |
* WHAT...Dangerously hot conditions with temperatures around 105 in Kingman, Golden Valley, Dolan Springs; around 110 in Las Vegas, Pahrump, Barstow, Yucca Valley, Twentynine Palms; around 115 in Laughlin, Bullhead City, Needles, Lake Havasu City; around 120 at Furnace Creek in Death Valley National Park. Expect minimal overnight relief. Major-to-Extreme Heat Risk. In the Owens Valley, temperatures will be around 100 to 105, yielding Moderate Heat Risk. * WHERE...Portions of northwest Arizona, southeast California, and south central and southern Nevada. * WHEN...Until 11 PM PDT /11 PM MST/ Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Heat Advisory |
| Area(s): | San Luis Obispo County Inland Central Coast; Santa Barbara County Inland Central Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Palos Verdes Hills |
| Effective: | 21aaeor57aa -> 22apeor0ap |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 21aaeor57aa |
| Headline: | Heat Advisory issued August 21 at 1:57AM PDT until August 22 at 9:00PM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Temperatures of 90 to 105 degrees expected. * WHERE...Central Ventura County Valleys, Lake Casitas, Ojai Valley, Palos Verdes Hills, San Luis Obispo County Inland Central Coast, and Santa Barbara County Inland Central Coast. * WHEN...From 11 AM this morning to 9 PM PDT Friday. * 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. |
| Alert: | Extreme Heat Warning |
| Area(s): | Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; Santa Barbara County Interior Mountains; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; 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; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley; Los Angeles County San Gabriel Valley |
| Effective: | 21aaeor57aa -> 23apeor0ap |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 21aaeor57aa |
| Headline: | Extreme Heat Warning issued August 21 at 1:57AM PDT until August 23 at 9:00PM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Dangerously hot conditions with temperatures of 95 to 110 degrees expected. * WHERE...A portion of southwest California. * WHEN...From 11 AM this morning to 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. |
| Alert: | Extreme Heat Warning |
| Area(s): | Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Los Angeles County Inland Coast including Downtown Los Angeles; Eastern Santa Monica Mountains Recreational Area |
| Effective: | 21aaeor57aa -> 22apeor0ap |
| Onset: | 21apeor0ap -> 22aaeor0aa |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 21aaeor57aa |
| Headline: | Extreme Heat Warning issued August 21 at 1:57AM PDT until August 22 at 9:00PM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 96 expected. * WHERE...Eastern Santa Monica Mountains Recreational Area, Los Angeles County Inland Coast including Downtown Los Angeles, Santa Ynez Mountains Eastern Range, and Santa Ynez Mountains Western Range. * WHEN...From 11 AM this morning to 9 PM PDT Friday. * 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. |
| Alert: | Heat Advisory |
| Area(s): | Lassen-Eastern Plumas-Eastern Sierra Counties |
| Effective: | 21aaeor34aa -> 23aaeor0aa |
| Onset: | 22apeor0ap -> 22aaeor0aa |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Reno NV on 21aaeor34aa |
| Headline: | Heat Advisory issued August 21 at 12:34AM PDT until August 23 at 9:00AM PDT by NWS Reno NV |
| Description: |
* WHAT...High temperatures ranging from 99 to 103 degrees and warm lows between 60 to 66 degrees, with widespread Moderate to isolated Major HeatRisk. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From noon Friday to 9 AM PDT Saturday. * IMPACTS...Heat-related illnesses will be more likely, especially for those spending extended periods outdoors, in poorly cooled indoor spaces, or who are sensitive to heat. |
| Alert: | Red Flag Warning |
| Area(s): | Santa Clarita Valley; 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; Eastern Antelope Valley Foothills |
| Effective: | 20apeor34ap -> 23apeor0ap |
| Onset: | 20apeor34ap -> 23apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 20apeor34ap |
| Headline: | Red Flag Warning issued August 20 at 3:34PM PDT until August 23 at 9:00PM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY FOR AN UNSEASONABLY HOT AND UNSTABLE AIR MASS CAPABLE OF PRODUCING EXTREME FIRE BEHAVIOR FROM VERTICAL PLUME GROWTH... LOW RELATIVE HUMIDITY...AND LOCALLY BREEZY WINDS FOR PORTIONS OF THE MOUNTAINS AND FOOTHILLS OF LOS ANGELES AND VENTURA COUNTIES... ...RED FLAG WARNING IN EFFECT FROM 9 AM PDT THURSDAY TO 9 PM PDT SATURDAY FOR AN UNSEASONABLY HOT AND UNSTABLE AIR MASS CAPABLE OF PRODUCING EXTREME FIRE BEHAVIOR FROM VERTICAL PLUME GROWTH...LOW RELATIVE HUMIDITY...AND LOCALLY BREEZY WINDS FOR PORTIONS OF THE MOUNTAINS AND FOOTHILLS OF SANTA BARBARA AND SAN LUIS OBISPO COUNTIES... .A significant heatwave is on the way for late this week into this weekend, bringing dangerous fire-weather conditions. * TEMPERATURES...Unseasonably hot high temperatures, generally 95- 110 degrees and highest Thursday through Saturday, producing unseasonably unstable conditions. * RELATIVE HUMIDITY...Minimum relative humidity 8-20 percent, lowest Wednesday and Thursday. * THUNDERSTORMS...Isolated thunderstorms will be possible Friday through the weekend, and any accompanying lightning strikes will be capable of starting new fires on the peripheries of rain cores. * WINDS...Southwest at 10-20 mph gusting to 20-25 mph over the western Antelope Valley Foothills and vicinity and in other wind- favored areas such as through passes and canyons. Lighter winds elsewhere. Passing outflow boundaries could bring sudden wind- shifts and increased fire-spread rates, even from distant thunderstorms. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior and rapid fire growth, which could threaten life and property. Be aware of sudden re-direction of fires in response to passing outflow boundaries. * ADDITIONAL DETAILS...Fire-weather headlines may eventually need to be extended into Sunday. |
| Alert: | Red Flag Warning |
| Area(s): | Cuyama Valley; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains |
| Effective: | 20apeor34ap -> 23apeor0ap |
| Onset: | 21aaeor0aa -> 23apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 20apeor34ap |
| Headline: | Red Flag Warning issued August 20 at 3:34PM PDT until August 23 at 9:00PM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY FOR AN UNSEASONABLY HOT AND UNSTABLE AIR MASS CAPABLE OF PRODUCING EXTREME FIRE BEHAVIOR FROM VERTICAL PLUME GROWTH... LOW RELATIVE HUMIDITY...AND LOCALLY BREEZY WINDS FOR PORTIONS OF THE MOUNTAINS AND FOOTHILLS OF LOS ANGELES AND VENTURA COUNTIES... ...RED FLAG WARNING IN EFFECT FROM 9 AM PDT THURSDAY TO 9 PM PDT SATURDAY FOR AN UNSEASONABLY HOT AND UNSTABLE AIR MASS CAPABLE OF PRODUCING EXTREME FIRE BEHAVIOR FROM VERTICAL PLUME GROWTH...LOW RELATIVE HUMIDITY...AND LOCALLY BREEZY WINDS FOR PORTIONS OF THE MOUNTAINS AND FOOTHILLS OF SANTA BARBARA AND SAN LUIS OBISPO COUNTIES... .A significant heatwave is on the way for late this week into this weekend, bringing dangerous fire-weather conditions. * TEMPERATURES...Unseasonably hot high temperatures, generally 95- 105 degrees, producing unseasonably unstable conditions. * RELATIVE HUMIDITY...Minimum relative humidity 8-20 percent. * THUNDERSTORMS...There is a less than 10 percent chance of isolated thunderstorms Friday through the weekend, and any accompanying lightning strikes will be capable of starting new fires on the peripheries of rain cores. * WINDS...Diurnal wind patterns with speeds of 5-10 mph gusting to 10-15 mph, locally higher in wind-favored areas such as through passes and canyons. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior and rapid fire growth, which could threaten life and property. Be aware of sudden re-direction of fires in response to passing outflow boundaries. * ADDITIONAL DETAILS...Fire-weather headlines may eventually need to be extended into Sunday. |
| Alert: | Heat Advisory |
| Area(s): | Shasta Lake Area / Northern Shasta County; Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley; Mountains Southwestern Shasta County to Western Colusa County |
| Effective: | 20apeor12ap -> 24aaeor0aa |
| Onset: | 22apeor0ap -> 21apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Sacramento CA on 20apeor12ap |
| Headline: | Heat Advisory issued August 20 at 12:12PM PDT until August 23 at 11:00PM PDT by NWS Sacramento CA |
| Description: |
* WHAT...High temperatures 95 to 107 expected. Overnight low temperatures in the mid 60s to 70s. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Carquinez Strait and Delta, Mountains Southwestern Shasta County to Western Colusa County, Shasta Lake Area / Northern Shasta County, Sacramento Valley and Northern San Joaquin Valley. * WHEN...From 11 AM Friday to 11 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities. |
| Alert: | Fire Weather Watch |
| Area(s): | Fort Tejon |
| Effective: | 19apeor44ap -> 23apeor0ap |
| Onset: | 20aaeor0aa -> 19apeor59ap |
| Severity: | Severe |
| Certainty: | Observed |
| Urgency: | Past |
| Issued By: | NWS Hanford CA on 19apeor44ap |
| Headline: | The Fire Weather Watch has been replaced. Please see the latest information from NWS Hanford CA on this developing situation. |
| Description: |
The Fire Weather Watch has been replaced. Please see the latest information from NWS Hanford CA on this developing situation. |