Coastal Flood Advisory
Coastal Hazard Message
National Weather Service Eureka CA
715 PM PST Fri Dec 5 2025
CAZ103-061215-
/O.CON.KEKA.CF.Y.0011.251206T1800Z-251206T2100Z/
Northern Humboldt Coast-
715 PM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM TO 1 PM
PST SATURDAY...
* 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 8.9 and 9.2 feet MLLW
at the North Spit tide gauge is predicted.
* WHERE...Northern Humboldt Coast County.
* WHEN...From 10 AM to 1 PM PST Saturday. High tide is at 11:44 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.
&&
$$
Coastal Hazard Message
National Weather Service San Francisco CA
1249 PM PST Fri Dec 5 2025
CAZ006-506-508-529-530-061300-
/O.CON.KMTR.CF.Y.0016.000000T0000Z-251207T2300Z/
San Francisco-North Bay Interior Valleys-
San Francisco Bay Shoreline-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast-
1249 PM PST Fri Dec 5 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...
* WHAT...Up to 1.7 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal waterways.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...Until 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...The San Francisco tidal gauge high tide is
expected to be 1.7 ft above normal (7.51 ft MLLW) at 11:25 AM
Saturday and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
$$
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
826 PM PST Fri Dec 5 2025
PZZ540-061100-
/O.CON.KMTR.SC.Y.0212.000000T0000Z-251206T1100Z/
Coastal Waters from Point Arena to Point Reyes California out to
10 NM-
826 PM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
SATURDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt.
* WHERE...Coastal Waters from Point Arena to Point Reyes
California out to 10 NM.
* WHEN...Until 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
826 PM PST Fri Dec 5 2025
PZZ570-061230-
/O.CON.KMTR.SC.Y.0212.000000T0000Z-251206T1700Z/
Waters from Point Arena to Point Reyes 10-60 NM-
826 PM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...
* WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt.
* WHERE...Waters from Point Arena to Point Reyes 10-60 NM.
* WHEN...Until 9 AM PST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
249 PM PST Fri Dec 5 2025
PZZ455-060700-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251206T0700Z/
Cape Mendocino to Pt Arena out 10 nm-
249 PM 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 25 kt and
seas 6 to 8 feet.
* WHERE...Cape Mendocino to Pt Arena out 10 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
249 PM PST Fri Dec 5 2025
PZZ475-060700-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251206T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
249 PM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PST THIS
EVENING...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and
seas 6 to 8 feet.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...Until 11 PM PST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
200 PM PST Fri Dec 5 2025
PZZ350-370-061100-
/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-
200 PM 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 seas 7 to
11 ft at 10 seconds. Beginning Saturday, south winds becoming 20
to 30 kts with steep wind-driven seas 9 to 11 ft.
* 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
200 PM PST Fri Dec 5 2025
PZZ356-061100-
/O.CON.KMFR.SC.Y.0106.000000T0000Z-251207T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
200 PM PST Fri Dec 5 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...
* WHAT...Southwest winds 10 to 20 kts and steep seas 7 to 11 feet
at 10 seconds.
* WHERE...Beyond 5 nm from shore, except closer to the coast
towards Port Orford.
* WHEN...Until 4 PM PST Saturday.
* IMPACTS...Gusty winds and or steep seas could capsize or
damage smaller vessels.
* View the hazard area in detail at https://go.usa.gov/x6hks
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners and those operating smaller vessels should
remain in port and avoid the area of hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
200 PM PST Fri Dec 5 2025
PZZ376-061100-
/O.CON.KMFR.SC.Y.0105.000000T0000Z-251207T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
200 PM 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.
&&
$$
Visit us at https://www.weather.gov/Medford
Short Term Forecast
Short Term Forecast
National Weather Service Eureka CA
710 PM PST Fri Dec 5 2025
CAZ103-060445-
Northern Humboldt Coast-
710 PM PST Fri Dec 5 2025
.NOW...
Patchy dense fog has developed and will likely persist over the
next few hours, especially around Humboldt Bay and along portions
of HWY 101 from McKinleyville to about Fortuna (which includes
Arcata and Eureka). Use low beams and allow extra time to reach
your destination.
$$
