Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
302 AM PDT Sun Oct 4 2026
CAZ112-113-118>120-041815-
/O.CON.KEKA.HT.Y.0006.000000T0000Z-261005T0600Z/
Southwestern Interior Mendocino-Southeastern Interior Mendocino-
Western Lake-Southwestern Lake-Eastern Lake-
Including Talmage, Upper Lake, Middletown, Calpella, Hopland,
Lakeport, Redwood Valley, Clearlake Park, Yorkville, Philo, Finley,
Hidden Valley Lake, Clearlake, Ukiah, and Boonville
302 AM PDT Sun Oct 4 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...
* WHAT...High temperatures up to 101 with overnight temperatures over
65. Moderate to localized high HeatRisk.
* WHERE...Southern Mendocino Interior, and Southern Lake.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Moderate to localized high HeatRisk will increase the
potential for 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
JLW
URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
748 PM PDT Sat Oct 3 2026
CAZ503-504-506-508-510-512>518-050515-
/O.CON.KMTR.HT.Y.0014.000000T0000Z-261008T0500Z/
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-
748 PM PDT Sat Oct 3 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT WEDNESDAY...
* WHAT...Hot conditions with maximum temperatures in the mid-90s to
low-100s. 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 Wednesday.
* 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.
Beat the heat and check the backseat! Do not leave young children or
pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.
&&
$$
Sarment
URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
748 PM PDT Sat Oct 3 2026
CAZ505-509-530-050500-
/O.EXA.KMTR.HT.Y.0014.000000T0000Z-261005T0500Z/
Coastal North Bay Including Point Reyes National Seashore-San
Francisco Peninsula Coast-Southern Monterey Bay and Big Sur Coast-
748 PM PDT Sat Oct 3 2026
...HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT SUNDAY...
* WHAT...Hot conditions with maximum temperatures in the low-80s to
low-90s. Mild minimum temperatures and weak onshore flow will limit
overnight relief.
* WHERE...Southern Monterey Bay and the Big Sur Coast, Coastal North
Bay Including Point Reyes National Seashore, and San Francisco
Peninsula Coast.
* WHEN...Until 10 PM PDT Sunday.
* IMPACTS...This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
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.
Beat the heat and check the backseat! Do not leave young children or
pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
214 PM PDT Sat Oct 3 2026
CAZ122-124-125-129-131-134-137-141-142-144>164-050000-
/O.CON.KSTO.HT.Y.0006.000000T0000Z-261008T0500Z/
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 Yuba City, Beale AFB, Lincoln, Roseville,
Sacramento, Elk Grove, Folsom, Paradise, Tracy, Esparto, Winters,
Whiskeytown, Red Bluff, Colusa, Modesto, Turlock, Vallejo, Benicia,
Fairfield, Vacaville, Sonora, Angels Camp, Stockton, Lodi, Chico,
Oroville, Gridley, Redding, Anderson, Cameron Park, Shingle Springs,
Placerville, Cool, Jackson, Auburn, Grass Valley, Colfax, Nevada
City, Willows, Orland, Walnut Grove, Woodland, Dixon, and Williams
214 PM PDT Sat Oct 3 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT WEDNESDAY...
* WHAT...High temperatures of 94 to 102 degrees expected and low
temperatures in the mid 60s to low 70s, with widespread Moderate
HeatRisk and areas of Major HeatRisk.
* WHERE...Sacramento and northern San Joaquin valleys, Delta and
Carquinez Strait, and foothills.
* WHEN...Until 10 PM PDT Wednesday.
* 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/
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
304 AM PDT Sun Oct 4 2026
PZZ470-041600-
/O.CON.KEKA.SC.Y.0087.000000T0000Z-261004T1600Z/
Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm-
304 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS
MORNING...
* WHAT...North winds 10 to 20 kt with occasional gusts to 25 kt
and steep seas 5 to 6 feet.
* WHERE...Waters from Pt. St. George to Cape Mendocino CA from
10 to 60 nm.
* WHEN...Until 9 AM PDT this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
304 AM PDT Sun Oct 4 2026
PZZ475-041600-
/O.CON.KEKA.SC.Y.0087.000000T0000Z-261004T1600Z/
Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm-
304 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS
MORNING...
* WHAT...North winds 10 to 20 kt and steep seas 5 to 6 feet.
* WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to
60 nm.
* WHEN...Until 9 AM PDT this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
203 AM PDT Sun Oct 4 2026
PZZ350-042215-
/O.EXP.KMFR.SC.Y.0081.000000T0000Z-261004T0900Z/
/O.CON.KMFR.SC.Y.0082.261005T0600Z-261006T0600Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
203 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM PDT MONDAY...
...SMALL CRAFT ADVISORY HAS EXPIRED...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 5
to 7 ft at 6 to 7 seconds expected.
* WHERE...Waters north of Cape Blanco from the shore to 10 nm.
* WHEN..From 11 PM Sunday to 11 PM PDT Monday.
* IMPACTS...Gusty winds and/or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
203 AM PDT Sun Oct 4 2026
PZZ356-042215-
/O.EXP.KMFR.SC.Y.0078.000000T0000Z-261004T0900Z/
/O.CON.KMFR.SC.Y.0082.261005T0600Z-261006T0600Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
203 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM PDT MONDAY...
...SMALL CRAFT ADVISORY HAS EXPIRED...
* WHAT...North winds 15 to 30 kt with occasional gusts up to 35
kt and seas 5 to 8 ft at 6 to 7 seconds expected.
* WHERE...Waters south of Cape Blanco from the shore to 10 nm.
* WHEN...From 11 PM Sunday to 11 PM PDT Monday.
* IMPACTS...Gusty winds and/or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
203 AM PDT Sun Oct 4 2026
PZZ370-042215-
/O.CON.KMFR.SC.Y.0081.000000T0000Z-261006T0600Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
203 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT
MONDAY...
* WHAT...North winds 15 to 20 kt with seas 5 to 7 ft at 6 to 7
seconds expected.
* WHERE...Waters north of Cape Blanco and 10-60 nm from shore.
Highest winds and steepest seas from Cape Arago southward.
* WHEN...Until 11 PM PDT Monday.
* IMPACTS...Gusty winds and/or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
203 AM PDT Sun Oct 4 2026
PZZ376-042215-
/O.CON.KMFR.SC.Y.0078.000000T0000Z-261006T0600Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
203 AM PDT Sun Oct 4 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT
MONDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas
6 to 8 ft at 6 to 7 seconds expected.
* WHERE...Waters south of Cape Blanco and 10-60 nm from shore.
* WHEN...Until 11 PM PDT Monday.
* IMPACTS...Gusty winds and/or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
Visit us at https://www.weather.gov/Medford
Short Term Forecast
Short Term Forecast
National Weather Service Eureka CA
609 AM PDT Sun Oct 4 2026
CAZ101-103-041630-
Coastal Del Norte-Northern Coastal Humboldt-
Including the cities of Ft Dick, Crescent City, Smith River,
Eureka, Samoa, Arcata, Arcata Arpt, Fieldbrook, Fernbridge,
and Fortuna
609 AM PDT Sun Oct 4 2026
.NOW...Patchy, dense fog has developed along the Del Norte and
Humboldt coasts, especially around Humboldt Bay, impacting
portions of Hwy 101. Expect rapid changes in visibility in the
patchy fog. Use low beams and allow extra time to reach your
destination.
$$
