URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
446 AM PDT Tue Oct 6 2026
CAZ110>114-118>120-062000-
/O.CON.KEKA.HT.Y.0006.000000T0000Z-261009T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southwestern Interior Mendocino-Southeastern Interior Mendocino-
Northern Lake-Western Lake-Southwestern Lake-Eastern Lake-
Including Covelo, Cobb, Clearlake Park, Laytonville, Calpella,
Finley, Boonville, Philo, Willits, Hidden Valley Lake, Middletown,
Comptche, Legget, Clearlake, Ukiah, Upper Lake, Potter Valley,
Redwood Valley, Talmage, Lakeport, Yorkville, Hopland, Knobcone Camp,
and Gravelly Valley Airport
446 AM PDT Tue Oct 6 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THURSDAY...
* WHAT...High temperatures of 95 to 105 with overnight temperatures
in the high 50s and 60s. Moderate to localized Major HeatRisk.
* WHERE...Mendocino Interior, and Lake County.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka
MKK
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
256 AM PDT Tue Oct 6 2026
CAZ340-346-071715-
/O.CON.KLOX.HT.Y.0018.261007T1700Z-261009T0300Z/
San Luis Obispo County Beaches-Santa Barbara County Central Coast
Beaches-
Including the cities of Pismo Beach, Arroyo Grande, Cambria, Avila
Beach, Morro Bay, Vandenberg Space Force Base, and Lompoc
256 AM PDT Tue Oct 6 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 8 PM PDT
THURSDAY...
* WHAT...Temperatures of 80 to 95 degrees expected.
* WHERE...San Luis Obispo County Beaches and Santa Barbara County
Central Coast Beaches.
* WHEN...From 10 AM Wednesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
256 AM PDT Tue Oct 6 2026
CAZ341>345-347-348-071715-
/O.CON.KLOX.HT.Y.0018.000000T0000Z-261009T0300Z/
San Luis Obispo County Inland Central Coast-Santa Lucia Mountains-
Southern Salinas Valley-San Luis Obispo County Interior Valleys-
San Luis Obispo County Mountains-Santa Barbara County Inland
Central Coast-Santa Ynez Valley-
Including the cities of Carrizo Plain, Santa Ynez, Solvang, Hearst
Castle, Atascadero, Lopez Lake, San Luis Obispo, Nipomo, Irish Hills,
Shandon, Los Olivos, Creston, Santa Margarita Lake, Templeton,
Caliente Range, Lake Nacimiento, Paso Robles, San Miguel, La Panza
Range, Santa Maria, Buellton, and Lake Cachuma
256 AM PDT Tue Oct 6 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...
* 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...Until 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
226 AM PDT Tue Oct 6 2026
CAZ503-504-506-508-510-512>518-061600-
/O.CON.KMTR.HT.Y.0014.000000T0000Z-261009T0500Z/
Sonoma Coastal Range-North Bay Interior Mountains-North Bay
Interior Valleys-San Francisco Bay Shoreline-East Bay Interior
Valleys-Santa Cruz Mountains-Santa Clara Valley Including San
Jose-Eastern Santa Clara Hills-East Bay Hills-Southern Salinas
Valley/Arroyo Seco and Lake San Antonio-Santa Lucia Mountains and
Los Padres National Forest-Mountains of San Benito County And
Interior Monterey County including Pinnacles National Park-
226 AM PDT Tue Oct 6 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THURSDAY...
* WHAT...Hot conditions with maximum temperatures in the mid-90s to
near 105. Mild minimum temperatures and weak onshore flow will
limit overnight relief.
* WHERE...The East Bay and San Francisco Bay Shoreline, North Bay
Interior Mountains and Valleys, The Santa Clara Valley and Eastern
Hills, The Santa Cruz Mountains, Interior Monterey County and the
Santa Lucia Range, Most of San Benito County and the Cholame Hills
in Southeast Monterey County, and Southern Salinas Valley/Arroyo
Seco and Lake San Antonio.
* WHEN...Until 10 PM PDT Thursday.
* IMPACTS...This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Hydration is a critical piece to surviving the heat. Drink water, and
if possible, take water to those who are vulnerable.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to the early
morning or evening. Take action when you experience symptoms of heat
exhaustion and/or heat stroke.
&&
$$
Sarment
URGENT - WEATHER MESSAGE
National Weather Service San Juan PR
230 AM AST Tue Oct 6 2026
PRZ001>013-VIZ001-002-061430-
/O.NEW.TJSJ.HT.Y.0068.261006T1400Z-261006T2000Z/
San Juan and Vicinity-Northeast-Southeast-Eastern Interior-North
Central-Central Interior-Ponce and Vicinity-Northwest-Western
Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques-
St.Thomas...St. John...and Adjacent Islands-St Croix-
Including the cities of Cruz Bay, Guayama, Cabo Rojo, Loiza,
Guayanilla, Hormigueros, Juncos, Caguas, Barranquitas, San Juan,
Santa Isabel, Aguas Buenas, Lares, Catano, Rincon, Guanica, Toa Baja,
Juana Diaz, Ceiba, Patillas, Barceloneta, Frederiksted Southeast,
Christiansted, Toa Alta, Jayuya, Culebra, San Sebastian, Las Piedras,
Carolina, Anasco, Salinas, Vega Baja, Morovis, Guaynabo, Penuelas,
Charlotte Amalie West, Florida, Ciales, Manati, Grove Place,
Adjuntas, San German, Naguabo, Yabucoa, Aguadilla, Maunabo, Fajardo,
Utuado, Maricao, Vega Alta, Charlotte Amalie, Lajas, Arecibo,
Quebradillas, Luquillo, Aguada, Yauco, Comerio, Sabana Grande,
Corozal, Charlotte Amalie East, Gurabo, Naranjito, Cayey, Villalba,
Vieques, Isabela,
Frederiksted, Anna`s Retreat, Rio Grande, San Lorenzo, Trujillo
Alto, Dorado, Moca, Ponce, Cidra, Mayaguez, Aibonito, Camuy, Las
Marias, Orocovis, Canovanas, Humacao, Bayamon, Coamo, Arroyo, and
Hatillo
230 AM AST Tue Oct 6 2026
...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 4 PM AST THIS
AFTERNOON...
* WHAT...This level of heat affects most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration.
* WHERE...Puerto Rico and U.S. Virgin Islands.
* WHEN...From 10 AM this morning to 4 PM AST this afternoon.
* IMPACTS...High temperatures or elevated heat indices can worsen
symptoms in people with chronic conditions. They can also increase
the risk of heat-related illness among individuals sensitive to
heat with inadequate cooling or hydration. These risks are highest
across coastal areas, lowlands, interior valleys, and urban zones.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
YZR
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
Issued by National Weather Service Sacramento CA
1015 AM PDT Mon Oct 5 2026
CAZ300>322-070000-
/O.EXT.KHNX.HT.Y.0007.000000T0000Z-261010T0500Z/
West Side Mountains north of 198-Los Banos - Dos Palos-Merced -
Madera - Mendota-Planada - Le Grand - Snelling-Coalinga - Avenal-
West Side of Fresno and Kings Counties-Caruthers - San Joaquin -
Selma-Fresno-Clovis-West Side Mountains South of 198-Buttonwillow
- Lost Hills - I5-Delano-Wasco-Shafter-Hanford - Corcoran -
Lemoore-Visalia - Porterville - Reedley-Buena Vista-Bakersfield-
Southeast San Joaquin Valley-South End San Joaquin Valley-
Mariposa Madera Foothills-Mariposa-Madera Lower Sierra-Fresno-
Tulare Foothills-Fresno-Tulare Lower Sierra-South End Sierra
Foothills-South End of the Lower Sierra-
Including the cities of Planada, Bass Lake, Millerton Lake, Shafter,
Taft, Avenal, Fresno, Lost Hills, Coalinga, Lemoore Station, Delano,
Camp Nelson, Blackwells Corner, Richgrove, Parlier, Kettleman City,
Arvin, Atwater, Lake Mcclure, Visalia, Lamont, Fish Camp, Five
Points, North Fork, Auberry, Kingsburg, Merced, Oakhurst,
Buttonwillow, Mariposa, Corcoran, Le Grand, Madera, Coarsegold,
Alpaugh, San Luis Reservoir, Lemoore, Selma, Sanger, Kerman, Los
Banos, McKittrick, Bakersfield, El Portal, Tulare, Hanford, Goshen,
Porterville, and Wasco
1015 AM PDT Mon Oct 5 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 10 PM PDT FRIDAY...
* WHAT...High temperatures up to 102 degrees expected. Overnight lows
between 70 and 75 degrees expected in the Sierra Foothills where
the thermal belt is strongest
* WHERE...San Joaquin Valley, Sierra Nevada foothills, and Coastal
West Hills.
* WHEN...Until 10 PM PDT Friday.
* 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
HNX
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
942 AM PDT Mon Oct 5 2026
CAZ122-124-125-129-131-134-137-141-142-144>164-070000-
/O.EXT.KSTO.HT.Y.0006.000000T0000Z-261010T0500Z/
W. Shasta County 1000-3000 ft-Shasta Metro-Shasta County
Foothills 1000-3000 ft-Sierra (Tehama-Plumas) 1000-3000 ft-N.
Motherlode 1000-3000 ft-Central Motherlode 1000-3000 ft-Southern
Motherlode 1000-3000 ft-W Tehama Co Foothills 1000-3000 ft-N. Sac
Valley in Tehama County-Central Glenn Co & Interstate 5-Eastern
Glenn County-Butte County Below 1000 ft-W. Glenn/Colusa Foothills
1000-3000 ft-Central Colusa County Incl. I-5-Eastern Colusa
County-Sutter/Yuba counties below 1000 ft-Yolo / Solano County
Hills-W. Yolo County including Capay/I-505-C. Yolo/NE Solano
including Woodland-Sac Metro/W. El Dorado/Amador County-C. Solano
County including Fairfield-SW Solano County including Vallejo-
Sacramento County Delta-San Joaquin County Delta-C. San Joaquin
County including Stockton-Tracy Triangle Below 1000 ft-NE San
Joaquin Valley Below 1000 ft-E. Diablo Range Above 1000 ft-W.
Stanislaus County Above 1000 ft & I-5-C. Stanislaus County
including Modesto-
Including the cities of Redding, Anderson, Colusa, Esparto, Winters,
Yuba City, Beale AFB, Red Bluff, Woodland, Dixon, Paradise,
Whiskeytown, Tracy, Chico, Oroville, Gridley, Cameron Park, Shingle
Springs, Placerville, Cool, Jackson, Vallejo, Benicia, Modesto,
Turlock, Auburn, Grass Valley, Colfax, Nevada City, Walnut Grove,
Fairfield, Vacaville, Sonora, Angels Camp, Williams, Lincoln,
Roseville, Sacramento, Elk Grove, Folsom, Stockton, Lodi, Willows,
and Orland
942 AM PDT Mon Oct 5 2026
...HEAT ADVISORY NOW IN EFFECT UNTIL 10 PM PDT FRIDAY...
* WHAT...High temperatures of 94 to 102 degrees expected and
overnight low temperatures in the mid 60s to low 70s, with
widespread Moderate HeatRisk and areas of Major HeatRisk.
* WHERE...The Sacramento and northern San Joaquin Valleys, Delta and
Carquinez Strait, and foothills.
* WHEN...Until 10 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially to
anyone without effective cooling and/or adequate hydration.
* ADDITIONAL DETAILS...Hottest days expected Monday through
Wednesday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
For more information, visit us at www.weather.gov/sto/
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