Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
122 AM PST Fri Dec 5 2025
CAZ506-510-051600-
/O.EXA.KMTR.CW.Y.0001.000000T0000Z-251205T1600Z/
North Bay Interior Valleys-East Bay Interior Valleys-
122 AM PST Fri Dec 5 2025
...COLD WEATHER ADVISORY IN EFFECT UNTIL 8 AM PST THIS MORNING...
* WHAT...Cold conditions with temperatures 33 to 36 degrees.
* WHERE...East Bay Interior Valleys and North Bay Interior Valleys.
* 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.
&&
$$
Coastal Flood Advisory
Coastal Hazard Message
National Weather Service San Francisco CA
443 AM PST Fri Dec 5 2025
CAZ006-506-508-529-530-052300-
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
San Francisco-North Bay Interior Valleys-
San Francisco Bay Shoreline-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
443 AM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal
waterways.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...The San Francisco tidal gauge high tide
is expected to be 1.4 ft above normal (7.23 ft MLLW) at 10:35
AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM
Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
Coastal Hazard Message
National Weather Service Eureka CA
131 AM PST Fri Dec 5 2025
CAZ103-051745-
/O.CON.KEKA.CF.Y.0010.251205T1800Z-251205T2000Z/
Northern Humboldt Coast-
131 AM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO NOON PST TODAY...
* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to one half foot of
saltwater inundation above ground level is possible near
shorelines and tidal waterways. Between 9.1 and 9.3 feet MLLW
at the North Spit tide gauge is predicted.
* WHERE...Northern Humboldt Coast County.
* WHEN...From 10 AM to noon PST Friday. High tide is at 10:55 AM
at the Humboldt Bay North Spit tide gauge. Saltwater inundation
will be possible 1 to 2 hours before and after high tide.
* IMPACTS...Flooding of low lying areas around Humboldt Bay
including parks and roads with only isolated closures
expected. Flooding will likely impact Jackson Ranch Road in
the Arcata Bottoms and several roads in King Salmon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.
Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.
&&
$$
Dense Fog Advisory
URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1012 PM PST Thu Dec 4 2025
CAZ015>019-051900-
/O.NEW.KSTO.FG.Y.0014.251205T0612Z-251205T1900Z/
Northern Sacramento Valley-Central Sacramento Valley-Southern
Sacramento Valley-Carquinez Strait and Delta-Northern San Joaquin
Valley-
Including the cities of Red Bluff, Oroville, Fairfield/Suisun,
Chico, Stockton, Redding, Marysville/Yuba City, Modesto, and
Sacramento
1012 PM PST Thu Dec 4 2025
...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PST FRIDAY...
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Carquinez Strait and Delta, Sacramento Valley, and
Northern San Joaquin Valley.
* WHEN...Until 11 AM PST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Find the latest road conditions at
quickmap.dot.ca.gov
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
&&
$$
For more information, visit us at www.weather.gov/sto/
NR
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
255 AM PST Fri Dec 5 2025
PZZ350-370-060000-
/O.CON.KMFR.SC.Y.0107.000000T0000Z-251207T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
255 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...
* WHAT...West to southwest wind 10 to 20 kts and steep wind-
driven seas 6 to 10 ft at 6 seconds.
* WHERE...All areas.
* WHEN...From 4 PM Thursday to 4 PM PST Saturday.
* IMPACTS...Gusty winds and 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
255 AM PST Fri Dec 5 2025
PZZ356-060000-
/O.CON.KMFR.SC.Y.0106.000000T0000Z-251207T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
255 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...
* WHAT...Southwest winds 10 to 20 kts and steep wind driven seas 6
to 10 feet at 6 seconds.
* WHERE...Beyond 5 nm from shore, except closer to the coast
towards Port Orford.
* WHEN...Until 4 PM PST Saturday.
* IMPACTS...Gusty winds and or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
255 AM PST Fri Dec 5 2025
PZZ376-060000-
/O.CON.KMFR.SC.Y.0105.000000T0000Z-251207T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
255 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...
* WHAT...Southwest winds of 10 to 20 kt, and steep west seas 8 to
10 feet at 6 seconds.
* WHERE...Beyond 30 nm from shore west of Point St. George and
just beyond 10 nm from shore west of Pistol River.
* WHEN...Until 4 PM PST Saturday.
* 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.
&&
$$
Visit us at https://www.weather.gov/Medford
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
233 AM PST Fri Dec 5 2025
PZZ475-051845-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251206T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
233 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and
seas 6 to 8 feet.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...Until 11 PM PST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
216 AM PST Fri Dec 5 2025
PZZ540-051830-
/O.CON.KMTR.SC.Y.0212.251205T1700Z-251206T1100Z/
Coastal Waters from Point Arena to Point Reyes California out to
10 NM-
216 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 3 AM PST SATURDAY...
* WHAT...Northwest winds 10 to 20 kt expected.
* WHERE...Coastal Waters from Point Arena to Point Reyes
California out to 10 NM.
* WHEN...From 9 AM this morning to 3 AM PST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/sanfrancisco
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
216 AM PST Fri Dec 5 2025
PZZ570-051830-
/O.EXT.KMTR.SC.Y.0212.000000T0000Z-251207T0500Z/
Waters from Point Arena to Point Reyes 10-60 NM-
216 AM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PST SATURDAY...
* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt.
* WHERE...Waters from Point Arena to Point Reyes 10-60 NM.
* WHEN...Until 9 PM PST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
