WWA Summary for All Issued by EKA

Coastal Flood Advisory

Coastal Hazard Message
National Weather Service Eureka CA
1215 PM PST Thu Dec 4 2025

CAZ103-050415-
/O.NEW.KEKA.CF.Y.0010.251205T1800Z-251205T2000Z/
Northern Humboldt Coast-
1215 PM PST Thu Dec 4 2025

...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 AM TO NOON PST
FRIDAY...

* 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.

&&

$$

Coastal Hazard Message
National Weather Service San Francisco CA
1202 PM PST Thu Dec 4 2025

CAZ006-506-508-529-530-051300-
/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-
1202 PM PST Thu Dec 4 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.

&&

$$

Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
231 PM PST Thu Dec 4 2025

PZZ475-050645-
/O.CON.KEKA.SC.Y.0131.000000T0000Z-251205T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
231 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST FRIDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas
  5 to 8 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
214 PM PST Thu Dec 4 2025

PZZ540-050615-
/O.CON.KMTR.SC.Y.0212.251205T1700Z-251206T1100Z/
Coastal Waters from Point Arena to Point Reyes California out to
10 NM-
214 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM FRIDAY TO
3 AM PST SATURDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt
  expected.

* WHERE...Coastal Waters from Point Arena to Point Reyes
  California out to 10 NM.

* WHEN...From 9 AM Friday 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
214 PM PST Thu Dec 4 2025

PZZ570-050615-
/O.CON.KMTR.SC.Y.0212.251205T0500Z-251206T1100Z/
Waters from Point Arena to Point Reyes 10-60 NM-
214 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 3 AM PST SATURDAY...

* WHAT...Northwest 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 this evening 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.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
210 PM PST Thu Dec 4 2025

PZZ350-370-051115-
/O.CON.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-
210 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...

* WHAT...West to southwest wind 10 to 20 mph 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
210 PM PST Thu Dec 4 2025

PZZ356-051115-
/O.CON.KMFR.SC.Y.0106.000000T0000Z-251207T0000Z/
Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm-
210 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...

* WHAT...Northwest winds 10 to 20 mph and steep wind-driven seas
  6 to 9 ft at 6 seconds. Winds becoming southwest Friday into
  Saturday.

* WHERE...All areas except near-shore waters south of Gold Beach.

* 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
210 PM PST Thu Dec 4 2025

PZZ376-051115-
/O.CON.KMFR.SC.Y.0105.000000T0000Z-251207T0000Z/
Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm-
210 PM PST Thu Dec 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...

* WHAT...North winds 10 to 20 kt and steep seas 6 to 8 ft at 6
  seconds through this afternoon. Seas may briefly lower below 6
  feet late this afternoon and this evening. Seas build to 5 to
  7 feet at 6 seconds with west to southwest winds of 10 to 20
  kt Thursday night and Friday. Steep west seas 8 to 10 feet
  Friday night and Saturday.

* WHERE...Beyond 5 nm from shore south of Port Orford today,
  then all the area Thursday night through Saturday.

* 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