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Home Return to list Dense Fog Advisory 0032 Issued by the San Francisco Bay Area / Monterey Forecast Office
Action: New Issued At: 2025-12-05 09:04:45 086 WWUS76 KMTR 051504 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 704 AM PST Fri Dec 5 2025 CAZ510-051900- /O.NEW.KMTR.FG.Y.0032.251205T1504Z-251205T1900Z/ /O.CON.KMTR.CW.Y.0001.000000T0000Z-251205T1600Z/ East Bay Interior Valleys- 704 AM PST Fri Dec 5 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PST THIS MORNING... ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Cold Weather Advisory, very cold conditions with temperatures 33 to 36 degrees. * WHERE...East Bay Interior Valleys. * WHEN...For the Dense Fog Advisory, until 11 AM PST this morning. For the Cold Weather Advisory, until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ CAZ506-516-518-051615- /O.CON.KMTR.CW.Y.0001.000000T0000Z-251205T1600Z/ North Bay Interior Valleys-Southern Salinas Valley/Arroyo Seco and Lake San Antonio-Mountains of San Benito County And Interior Monterey County including Pinnacles National Park- 704 AM PST Fri Dec 5 2025 ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING... * WHAT...Cold conditions with temperatures 33 to 36 degrees and locally to the upper 20s in higher elevations. * WHERE...Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Valleys, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation. && $$ DialH Action: Continued Issued At: 2025-12-05 09:52:16 250 WWUS76 KMTR 051551 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 751 AM PST Fri Dec 5 2025 CAZ510-051900- /O.EXP.KMTR.CW.Y.0001.000000T0000Z-251205T1600Z/ /O.CON.KMTR.FG.Y.0032.000000T0000Z-251205T1900Z/ East Bay Interior Valleys- 751 AM PST Fri Dec 5 2025 ...COLD WEATHER ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in patchy dense fog. * WHERE...East Bay Interior Valleys. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Temperatures are warming and are rising above advisory thresholds. Therefore, the threat is ending and the Cold Weather Advisory will be allowed to expire. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ CAZ506-516-518-051700- /O.EXP.KMTR.CW.Y.0001.000000T0000Z-251205T1600Z/ North Bay Interior Valleys-Southern Salinas Valley/Arroyo Seco and Lake San Antonio-Mountains of San Benito County And Interior Monterey County including Pinnacles National Park- 751 AM PST Fri Dec 5 2025 ...COLD WEATHER ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING... Temperatures are warming and are rising above advisory thresholds. Therefore, the threat is ending and the Cold Weather Advisory will be allowed to expire. However, some sheltered locations may retain temperatures at 36 degrees or below through the next couple of hours. $$ DialH Action: Expired Issued At: 2025-12-05 12:50:50 851 WWUS76 KMTR 051850 NPWMTR URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 1050 AM PST Fri Dec 5 2025 CAZ510-052000- /O.EXP.KMTR.FG.Y.0032.000000T0000Z-251205T1900Z/ East Bay Interior Valleys- 1050 AM PST Fri Dec 5 2025 ...DENSE FOG ADVISORY WILL EXPIRE AT 11 AM PST THIS MORNING... Visibilities have increased and are no longer meeting Dense Fog Advisory criteria. Therefore, the Advisory will be allowed to expire. $$ DialH | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||