Coastal Flood Advisory
Coastal Hazard Message
National Weather Service Eureka CA
1158 AM PST Wed Dec 3 2025
CAZ103-040400-
/O.NEW.KEKA.CF.Y.0009.251204T1700Z-251204T2000Z/
Northern Humboldt Coast-
1158 AM PST Wed Dec 3 2025
...COASTAL FLOOD ADVISORY 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.
&&
$$
Coastal Hazard Message
National Weather Service San Francisco CA
353 AM PST Wed Dec 3 2025
CAZ506-508-040600-
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
North Bay Interior Valleys-San Francisco Bay Shoreline-
353 AM PST Wed Dec 3 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal
waterways.
* WHERE...Bayshore locations along the San Francisco Bay and San
Pablo Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge high
tide is expected to be 1.2 ft above normal (7.00 ft MLLW) at
9:04 AM Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48
AM Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM
Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM
Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
232 PM PST Wed Dec 3 2025
PZZ570-040645-
/O.EXP.KMTR.SC.Y.0211.000000T0000Z-251203T2300Z/
/O.CON.KMTR.SC.Y.0212.251205T0500Z-251205T2300Z/
Waters from Point Arena to Point Reyes 10-60 NM-
232 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THURSDAY TO
3 PM PST FRIDAY...
...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 PM PST THIS AFTERNOON...
* 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
204 PM PST Wed Dec 3 2025
PZZ450-040600-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251204T0600Z/
Pt St George to Cape Mendocino out 10 nm-
204 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
* WHAT...North winds 5 to 15 kt with gusts up to 25 kt and seas
7 to 9 feet.
* WHERE...Pt St George to Cape Mendocino out 10 nm.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
204 PM PST Wed Dec 3 2025
PZZ470-040615-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251204T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
204 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
204 PM PST Wed Dec 3 2025
PZZ475-040615-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251205T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
204 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST FRIDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas
6 to 11 feet.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...Until 2 PM PST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
1226 PM PST Wed Dec 3 2025
PZZ350-370-041200-
/O.NEW.KMFR.SC.Y.0107.251205T0000Z-251207T0000Z/
Coastal waters from Florence to Cape Blanco OR out 10 nm-
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
1226 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THURSDAY TO 4 PM PST
SATURDAY...
* WHAT...Steep seas 6 to 10 ft at 7 seconds and west to southwest
winds 15 to 20 mph expected.
* WHERE...All areas.
* WHEN...From 4 PM Thursday to 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
1226 PM PST Wed Dec 3 2025
PZZ356-041200-
/O.EXT.KMFR.SC.Y.0106.000000T0000Z-251207T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
1226 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST SATURDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt, becoming
west 10 to 15 kt late Thursday. Steep seas 6 to 9 ft at 7
seconds.
* WHERE...All areas.
* WHEN...Until 4 PM PST Saturday.
* IMPACTS...Gusty winds and/or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
1226 PM PST Wed Dec 3 2025
PZZ376-041200-
/O.EXT.KMFR.SC.Y.0105.000000T0000Z-251207T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
1226 PM PST Wed Dec 3 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST SATURDAY...
* WHAT...North winds 15 to 25 kt with gusts up to 30 kt, becoming
west 10 to 15 kt late Thursday. Steep seas 6 to 9 ft at 7
seconds.
* WHERE...All areas.
* 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.
&&
$$
Visit us at https://www.weather.gov/Medford
Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1138 AM PST Wed Dec 3 2025
CAZ102>106-109-112-113-040545-
/O.NEW.KEKA.FR.Y.0038.251204T1100Z-251204T1700Z/
Del Norte Interior-Northern Humboldt Coast-Southwestern Humboldt-
Northern Humboldt Interior-Southern Humboldt Interior-Mendocino
Coast-Southwestern Mendocino Interior-Southeastern Mendocino
Interior-
Including Hopland, Redwood Valley, Ettersburg, Talmage, Calpella,
Ukiah, Yorkville, Briceland, Philo, Dinsmore, and Whitethorn
1138 AM PST Wed Dec 3 2025
...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM PST THURSDAY...
* WHAT...Temperatures as low as 36 will result in frost formation.
* WHERE...Humboldt County, Southern Mendocino Interior, Del Norte
Interior, and Mendocino Coast.
* WHEN...From 3 AM to 9 AM PST Thursday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka
Beach Hazards Statement
Coastal Hazard Message
National Weather Service San Francisco CA
353 AM PST Wed Dec 3 2025
CAZ505-509-040600-
/O.CON.KMTR.BH.S.0021.000000T0000Z-251204T0600Z/
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-
353 AM PST Wed Dec 3 2025
...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...
* WHAT...Long period westerly swell will result in an increased
risk for sneaker waves and strong rip currents. Breaking waves
10 to 14 feet, with long lulls of 10 to 20 minutes or more
between largest sets.
* WHERE...Pacific Coast beaches.
* WHEN...Through this evening.
* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Dangerous conditions are forecast along the shoreline. Hazards
include sneaker waves, strong rip currents, and large breaking
waves. Stay off the rocks and NEVER turn your back on the ocean!
&&
$$
