Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
1044 PM PST Wed Dec 3 2025
CAZ323-326>328-330-331-041700-
/O.CON.KHNX.CW.Y.0001.000000T0000Z-251204T1700Z/
Yosemite NP outside of the valley-Upper San Joaquin River-Kaiser
to Rodgers Ridge-Kings Canyon NP-Sequoia NP-South End of the
Upper Sierra-
Including the cities of Florence Lake, Lake Wishon, Cedar Grove,
Johnsondale, Tuolumne Meadows, Huntington Lake, Lodgepole, Devils
Postpile, Wawona, Giant Forest, Lake Thomas Edison, and Shaver
Lake
1044 PM PST Wed Dec 3 2025
...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THURSDAY
FOR ELEVATIONS ABOVE 9000 FEET...
* WHAT...Very cold wind chills around 10 below zero expected for
elevations above 9000 feet.
* WHERE...Kaiser to Rodgers Ridge, Kings Canyon NP, Sequoia NP,
South End of the Upper Sierra, Upper San Joaquin River, and
Yosemite NP outside of the valley.
* WHEN...Until 9 AM PST Thursday.
* IMPACTS...Very cold temperatures can lead to hypothermia with
prolonged exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
&&
$$
JPK
Coastal Flood Advisory
Coastal Hazard Message
National Weather Service San Francisco CA
939 PM PST Wed Dec 3 2025
CAZ006-529-530-041345-
/O.EXP.KMTR.BH.S.0021.000000T0000Z-251204T0600Z/
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
San Francisco-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
939 PM PST Wed Dec 3 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...
...BEACH HAZARDS STATEMENT WILL EXPIRE AT 10 PM PST THIS
EVENING...
* WHAT...Minor coastal flooding.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
Coastal Hazard Message
National Weather Service San Francisco CA
939 PM PST Wed Dec 3 2025
CAZ506-508-041345-
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
North Bay Interior Valleys-San Francisco Bay Shoreline-
939 PM PST Wed Dec 3 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 the San Francisco Bay and San
Pablo Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge high
tide is expected to be 1.2 ft above normal (7.00 ft MLLW) at
9:04 AM Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48
AM Thursday, 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.
&&
$$
Coastal Hazard Message
National Weather Service Eureka CA
801 PM PST Wed Dec 3 2025
CAZ103-041215-
/O.CON.KEKA.CF.Y.0009.251204T1700Z-251204T2000Z/
Northern Humboldt Coast-
801 PM PST Wed Dec 3 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO NOON PST
THURSDAY...
* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to one half foot of
saltwater inundation above ground level is expected near
shorelines and tidal waterways. Between 9 and 9.3 feet MLLW at
the North Spit tide gauge is predicted.
* WHERE...Northern Humboldt Coast County.
* WHEN...From 9 AM to noon PST Thursday. High tide is at 10:08am
at the Humboldt Bay North Spit tide gauge. Saltwater inundation
will be possible 1 to 2 hours before and after high tide.
* IMPACTS...Flooding of low lying areas around Humboldt Bay
including parks and roads with only isolated closures expected.
Flooding will likely impact Jackson Ranch Road in the Arcata
Bottoms and several roads in King Salmon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.
Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.
&&
$$
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1006 PM PST Wed Dec 3 2025
PZZ470-041415-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251204T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1006 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
THURSDAY...
* 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 3 PM PST Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1006 PM PST Wed Dec 3 2025
PZZ475-041415-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251205T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1006 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST FRIDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas
7 to 10 feet.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...Until 2 PM PST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
804 PM PST Wed Dec 3 2025
PZZ570-041215-
/O.CON.KMTR.SC.Y.0212.251205T0500Z-251205T2300Z/
Waters from Point Arena to Point Reyes 10-60 NM-
804 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THURSDAY TO
3 PM PST FRIDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt expected.
* WHERE...Waters from Point Arena to Point Reyes 10-60 NM.
* WHEN...From 9 PM Thursday to 3 PM PST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
804 PM PST Wed Dec 3 2025
PZZ571-041215-
/O.CON.KMTR.SC.Y.0212.251205T0500Z-251205T2300Z/
Waters from Point Reyes to Pigeon Point 10-60 NM-
804 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THURSDAY TO
3 PM PST FRIDAY...
* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt
expected.
* WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM.
* WHEN...From 9 PM Thursday to 3 PM PST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/sanfrancisco
Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
916 PM PST Wed Dec 3 2025
CAZ102>106-109-112-113-041415-
/O.CON.KEKA.FR.Y.0038.251204T1100Z-251204T1700Z/
Del Norte Interior-Northern Humboldt Coast-Southwestern Humboldt-
Northern Humboldt Interior-Southern Humboldt Interior-Mendocino
Coast-Southwestern Mendocino Interior-Southeastern Mendocino
Interior-
Including Yorkville, Ettersburg, Calpella, Talmage, Dinsmore, Philo,
Redwood Valley, Whitethorn, Briceland, Ukiah, and Hopland
916 PM PST Wed Dec 3 2025
...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM PST THURSDAY...
* WHAT...Temperatures as low as 36 will result in frost formation.
* WHERE...Humboldt County, Southern Mendocino Interior, Del Norte
Interior, and Mendocino Coast.
* WHEN...From 3 AM to 9 AM PST Thursday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
EYS
