Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
1113 AM PST Sun Dec 28 2025
CAZ506-510-513>518-528-291700-
/O.NEW.KMTR.CW.Y.0004.251229T0900Z-251229T1700Z/
North Bay Interior Valleys-East Bay Interior Valleys-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-Northern Salinas Valley/Hollister Valley
and Carmel Valley-
1113 AM PST Sun Dec 28 2025
...COLD WEATHER ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST MONDAY...
* WHAT...Cold conditions with temperatures as low as 34 expected.
* WHERE...Interior Central Coast, The Santa Clara Valley and Eastern
Hills, The East Bay Hills and Valleys, and North Bay Interior
Valleys.
* WHEN...From 1 AM to 9 AM PST Monday.
* 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.
&&
$$
Sarment
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1142 AM PST Sun Dec 28 2025
PZZ470-290200-
/O.CON.KEKA.SC.Y.0144.000000T0000Z-251229T0200Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1142 AM PST Sun Dec 28 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas
7 to 10 feet.
* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.
* WHEN...Until 6 PM PST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1142 AM PST Sun Dec 28 2025
PZZ475-290200-
/O.CON.KEKA.SC.Y.0144.000000T0000Z-251229T0200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1142 AM PST Sun Dec 28 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...
* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and seas
6 to 9 feet.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...Until 6 PM PST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1111 AM PST Sun Dec 28 2025
CAZ016>019-067-291700-
/O.NEW.KSTO.FR.Y.0001.251229T0900Z-251229T1700Z/
Central Sacramento Valley-Southern Sacramento Valley-Carquinez
Strait and Delta-Northern San Joaquin Valley-Motherlode-
Including the cities of Marysville/Yuba City, Sacramento,
Fairfield/Suisun, Stockton, Oroville, Chico, Modesto, Jackson,
and Grass Valley
1111 AM PST Sun Dec 28 2025
...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST MONDAY...
* WHAT...Temperatures as low as 33 to 36 degrees will result in
frost formation.
* WHERE...Elevations below 2,000 feet in the Motherlode, Carquinez
Strait and Delta, Central and Southern Sacramento Valley, and
Northern San Joaquin Valley.
* WHEN...From 1 AM to 9 AM PST Monday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...Frost formation may be inhibited by northerly
flow along and west of Interstate 5, or in areas where fog forms
early on in the night.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
For more information, visit us at www.weather.gov/sto/
KH
