Gale Warning 41, NWS Eureka, CA

214 
WHUS76 KEKA 171748
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1048 AM PDT Wed Sep 17 2025

PZZ470-180200-
/O.CON.KEKA.SC.Y.0096.250917T2000Z-250918T0300Z/
/O.CON.KEKA.GL.W.0041.250918T0300Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1048 AM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 3 AM
PDT FRIDAY...

* WHAT...For the Gale Warning, north winds 25 to 35 kt with 
  gusts up to 45 kt and seas 12 to 17 feet expected. For the 
  Small Craft Advisory, north winds 20 to 30 kt with gusts up to 
  35 kt and seas 6 to 9 feet expected.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...For the Gale Warning, from 8 PM this evening to 3 AM 
  PDT Friday. For the Small Craft Advisory, until 8 PM PDT this 
  evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ475-180200-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T0000Z/
/O.CON.KEKA.GL.W.0041.250918T0000Z-250918T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1048 AM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
3 PM PDT THURSDAY...

* WHAT...For the Gale Warning, north winds 25 to 35 kt with 
  gusts up to 40 kt and seas 8 to 13 feet expected. For the 
  Small Craft Advisory, north winds 20 to 25 kt with gusts up to 
  35 kt and seas 6 to 8 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, from 5 PM this afternoon to 3 PM 
  PDT Thursday. For the Small Craft Advisory, until 5 PM PDT 
  this afternoon.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-180200-
/O.CON.KEKA.SC.Y.0096.250918T0300Z-250918T1200Z/
/O.CON.KEKA.SE.A.0006.250918T1200Z-250919T0600Z/
Pt St George to Cape Mendocino out 10 nm-
1048 AM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 5 AM PDT THURSDAY...
...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH THURSDAY EVENING...

* WHAT...For the Small Craft Advisory, north winds 10 to 20 kt 
  with gusts up to 30 kt and seas 6 to 9 feet expected. For the 
  Hazardous Seas Watch, very steep and hazardous seas 7 to 11 
  feet possible.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Small Craft Advisory, from 8 PM this evening to 
  5 AM PDT Thursday. For the Hazardous Seas Watch, from late 
  tonight through Thursday evening.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering your plans to avoid possible hazardous sea
conditions.

&&

$$

PZZ455-180200-
/O.CON.KEKA.SC.Y.0096.250918T0000Z-250918T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
1048 AM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT THURSDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 to 10 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM this afternoon to 11 AM PDT 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.

&&

$$

991 
WHUS76 KEKA 172127
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
227 PM PDT Wed Sep 17 2025

PZZ450-180530-
/O.EXT.KEKA.SC.Y.0096.250918T0300Z-250918T1400Z/
/O.UPG.KEKA.SE.A.0006.250918T1200Z-250919T0600Z/
/O.NEW.KEKA.SE.W.0030.250918T1400Z-250919T0600Z/
Pt St George to Cape Mendocino out 10 nm-
227 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO
7 AM PDT THURSDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 7 AM TO 11 PM PDT
THURSDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 8 to 11 feet expected. For the Small Craft 
  Advisory, north winds 10 to 20 kt with gusts up to 30 kt and 
  seas 6 to 9 feet expected.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 7 AM to 11 PM PDT 
  Thursday. For the Small Craft Advisory, from 8 PM this evening 
  to 7 AM PDT Thursday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ470-180530-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T0300Z/
/O.CON.KEKA.GL.W.0041.250918T0300Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
227 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 3 AM
PDT FRIDAY...

* WHAT...For the Gale Warning, north winds 25 to 35 kt with 
  gusts up to 45 kt and seas 13 to 18 feet expected. For the 
  Small Craft Advisory, north winds 20 to 30 kt with gusts up to 
  35 kt and seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...For the Gale Warning, from 8 PM this evening to 3 AM 
  PDT Friday. For the Small Craft Advisory, until 8 PM PDT this 
  evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ475-180530-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T0000Z/
/O.CON.KEKA.GL.W.0041.250918T0000Z-250918T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
227 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
3 PM PDT THURSDAY...

* WHAT...For the Gale Warning, north winds 25 to 35 kt with 
  gusts up to 40 kt and seas 9 to 14 feet expected. For the 
  Small Craft Advisory, north winds 20 to 25 kt with gusts up to 
  35 kt and seas 6 to 8 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, from 5 PM this afternoon to 3 PM 
  PDT Thursday. For the Small Craft Advisory, until 5 PM PDT 
  this afternoon.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ455-180530-
/O.CON.KEKA.SC.Y.0096.250918T0000Z-250918T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
227 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT THURSDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 to 10 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM this afternoon to 11 AM PDT 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.

&&

$$

132 
WHUS76 KEKA 180616
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1116 PM PDT Wed Sep 17 2025

PZZ470-181430-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1116 PM PDT Wed Sep 17 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...

* WHAT...North winds 25 to 35 kt with gusts to 40 kt and seas 13 
  to 18 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ475-181430-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250918T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1116 PM PDT Wed Sep 17 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THURSDAY...

* WHAT...North winds 20 to 30 kt with gusts to 40 kt and seas 11 
  to 16 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 PM PDT Thursday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-181430-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T1400Z/
/O.CON.KEKA.SE.W.0030.250918T1400Z-250919T0600Z/
Pt St George to Cape Mendocino out 10 nm-
1116 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT
THURSDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 7 AM TO 11 PM
PDT THURSDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 8 to 11 feet expected. For the Small Craft Advisory, north
  winds 5 to 15 kt with gusts to 25 kt and seas 7 to 10 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 7 AM to 11 PM PDT 
  Thursday. For the Small Craft Advisory, until 7 AM PDT 
  Thursday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-181430-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
1116 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
THURSDAY...

* WHAT...North winds 15 to 25 kt with localized gusts to 35 kt 
  and seas 7 to 10 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 11 AM PDT 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.

&&

$$

160 
WHUS76 KEKA 180947
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
247 AM PDT Thu Sep 18 2025

PZZ450-181800-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T1400Z/
/O.EXT.KEKA.SE.W.0030.250918T1400Z-250919T1000Z/
Pt St George to Cape Mendocino out 10 nm-
247 AM PDT Thu Sep 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS
MORNING...
...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 7 AM THIS MORNING TO
3 AM PDT FRIDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 9 to 11 feet expected. For the Small Craft 
  Advisory, north winds 10 to 20 kt with gusts up to 25 kt and 
  seas 9 to 11 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 7 AM this morning 
  to 3 AM PDT Friday. For the Small Craft Advisory, until 7 AM 
  PDT this morning.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ470-181800-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
247 AM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...

* WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 
  14 to 19 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ475-181800-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250918T2200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
247 AM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  13 to 18 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 PM PDT this afternoon.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ455-181800-
/O.EXT.KEKA.SC.Y.0096.000000T0000Z-250919T0600Z/
Cape Mendocino to Pt Arena out 10 nm-
247 AM PDT Thu Sep 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT THIS
EVENING...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 7 to 12 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 11 PM PDT 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.

&&

$$

968 
WHUS76 KEKA 181811
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1111 AM PDT Thu Sep 18 2025

PZZ475-190215-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250918T2200Z/
/O.EXB.KEKA.SE.W.0030.250918T2200Z-250919T1000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1111 AM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
3 AM PDT FRIDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with 
  gusts up to 40 kt and seas 11 to 15 feet. For the Hazardous 
  Seas Warning, very steep and hazardous seas 11 to 15 feet 
  expected.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, until 3 PM PDT this afternoon. 
  For the Hazardous Seas Warning, from 3 PM this afternoon to 3 
  AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ470-190215-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1111 AM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...

* WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 
  13 to 18 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-190215-
/O.CON.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino out 10 nm-
1111 AM PDT Thu Sep 18 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
FRIDAY...

* WHAT...Very steep and hazardous seas 8 to 12 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-190215-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250919T0600Z/
Cape Mendocino to Pt Arena out 10 nm-
1111 AM PDT Thu Sep 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 7 to 10 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 11 PM PDT 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.

&&

$$

584 
WHUS76 KEKA 182213
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
313 PM PDT Thu Sep 18 2025

PZZ475-190615-
/O.EXP.KEKA.GL.W.0041.000000T0000Z-250918T2200Z/
/O.CON.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
313 PM PDT Thu Sep 18 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
FRIDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...Very steep and hazardous seas 11 to 15 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ470-190615-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
313 PM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...

* WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 
  13 to 18 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-190615-
/O.CON.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino out 10 nm-
313 PM PDT Thu Sep 18 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
FRIDAY...

* WHAT...Very steep and hazardous seas 9 to 12 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-190600-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250919T0600Z/
Cape Mendocino to Pt Arena out 10 nm-
313 PM PDT Thu Sep 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS
EVENING...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 7 to 10 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 11 PM PDT 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.

&&

$$

799 
WHUS76 KEKA 190503
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1003 PM PDT Thu Sep 18 2025

PZZ470-191315-
/O.CON.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
/O.NEW.KEKA.SE.W.0031.250919T1000Z-250919T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1003 PM PDT Thu Sep 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 3 AM TO 11 AM PDT
FRIDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with 
  gusts up to 40 kt and seas 13 to 18 feet. For the Hazardous 
  Seas Warning, very steep and hazardous seas 12 to 17 feet 
  expected.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...For the Gale Warning, until 3 AM PDT Friday. For the 
  Hazardous Seas Warning, from 3 AM to 11 AM PDT Friday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-191000-
/O.CON.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
Pt St George to Cape Mendocino out 10 nm-
1003 PM PDT Thu Sep 18 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
FRIDAY...

* WHAT...Very steep and hazardous seas 9 to 12 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ475-191000-
/O.CON.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1003 PM PDT Thu Sep 18 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
FRIDAY...

* WHAT...Very steep and hazardous seas 11 to 16 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 3 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-191000-
/O.EXT.KEKA.SC.Y.0096.000000T0000Z-250919T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
1003 PM PDT Thu Sep 18 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT FRIDAY...

* WHAT...Seas 6 to 9 feet.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...Until 3 AM PDT 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.

&&

$$

728 
WHUS76 KEKA 191025
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
325 AM PDT Fri Sep 19 2025

PZZ470-191800-
/O.EXP.KEKA.GL.W.0041.000000T0000Z-250919T1000Z/
/O.CON.KEKA.SE.W.0031.000000T0000Z-250919T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
325 AM PDT Fri Sep 19 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...GALE WARNING HAS EXPIRED...

* WHAT...Very steep and hazardous seas 10 to 14 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 11 AM PDT this morning.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ450-191830-
/O.EXP.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
/O.NEW.KEKA.SC.Y.0097.250919T1025Z-250919T2200Z/
Pt St George to Cape Mendocino out 10 nm-
325 AM PDT Fri Sep 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...
...HAZARDOUS SEAS WARNING HAS EXPIRED...

* WHAT...Seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...Until 3 PM PDT this afternoon.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ475-191830-
/O.EXP.KEKA.SE.W.0030.000000T0000Z-250919T1000Z/
/O.NEW.KEKA.SC.Y.0097.250919T1025Z-250920T0600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
325 AM PDT Fri Sep 19 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...
...HAZARDOUS SEAS WARNING HAS EXPIRED...

* WHAT...East winds 10 to 20 kt with gusts up to 30 kt and seas 
  7 to 12 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...Until 11 PM PDT 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.

&&

$$

PZZ455-191130-
/O.EXP.KEKA.SC.Y.0096.000000T0000Z-250919T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
325 AM PDT Fri Sep 19 2025

...SMALL CRAFT ADVISORY HAS EXPIRED...


$$

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
202 AM PDT Wed Sep 17 2025

.SYNOPSIS...Hot and dry weather will persist through Wednesday with
gusty nearshore winds. Cooler weather, scattered showers, and a
slight chance for thunderstorms will return Thursday into the
weekend.

&&

.DISCUSSION...The returning stratus overnight at the coast,
also advecting into the Eel River valley as well as low lying
coastal areas, is likely to erode significantly by the late morning
or afternoon Wednesday as the last few days of ridging return
similar predictable patterns to the CWA. This will soon be
interrupted by the approaching cyclonic low pressure system, seen
from water vapor satellite imagery with a distinct frontal boundary,
sure to bring moisture lobes and unsettled weather by the weekend if
not sooner.

A quickly amplifying ridge is bringing some late season heat.
Interior valley highs will reach the upper 90s with some isolated
low 100s forecast. This is creating some isolated Moderate HeatRisk
through Wednesday.

A remnant tropical system will begin pushing in moisture from the
south by late Wednesday. Elevated instability will accompany this
moisture, which will initially be focused in the southern zones from
Lake county to southern Mendocino counties. There is wide
uncertainty in the exact trajectory of the initial moisture surge.
Showers and a slight chance for thundertorms may begin just off or
along the coast of Mendocino County late Wednesday/early Thursday
morning, but the Thursday period has the greatest uncertainty with
it. Soundings showed a good deal of convective inhibition (CIN)
Thursday, but southern zones such as Lake County and Mendocino
counties may see some thunderstorm development (10%).
Precipital water values will be high (1 to 1.6 inches), but there
will initially be less precipitation reaching the ground from any
showers or thunderstorms before the dryness at the lowest levels
begins to saturate. Coverage may be highly limited depending on
where the best moisture axis sets up.

The moisture and instability will to continue to spread in Friday
through Saturday when precipitation totals will increase more with
deeper moisture. A surface low will form along the North Coast
Friday, and this will increase forcing and work to wrap the moisture
farther west. This will continue to bring the chance for showers and
isolated thunderstorms through Saturday. The exact timing and
location of this activity will have to be further resolved in coming
higher resolution guidance.

&&

.AVIATION...(06zTAFs)...Coastal stratus will continue along the
North Coast into early Wednesday morning. By Wednesday afternoon,
winds will begin to increase along the coast, leading to increased
mixing at the surface and a faster break up of stratus by 16-18Z.
Inland areas can expect VFR conditions through the TAF period.
Wednesday, the influence from tropical storm Mario will begin to
impact NW California leading to a change in the weather pattern.

&&

.MARINE...A change to our synoptic weather setup over the next
few days changes the sea state through the end of the week. High
pressure offshore interacting with the low pressure inland will
drastically enhance the pressure gradient creating strong, gale
force sustained winds with gusts over 45kts possible over the outer
waters Wednesday night through Thursday night. Wind waves of 15ft or
more are probable across the northern waters and southern outer
waters.

Hazards have been issued for all marine forecast zones. Gale
Warnings have been issued for the outer waters. Inner water zones
out 10nm can expect near gale gusts with large wind waves
propagating into the waters. Outer water zones 10-60nm can be
subject to gale force winds south of Cape Blanco and Cape Mendocino
and large, very steep, wind waves with blowing spray.

Winds begin to ease slightly Thursday night through Friday morning
with wind waves beginning to ease Friday afternoon through Saturday
morning. This weekend, a NW swell of 5ft@11-13s is expected with
winds between 10-20kts across all the waters. Global deterministic
models are not aligned as to what the synoptic set up will be, yet
cluster analysis indicates relatively zonal flow aloft with a cutoff
low off the coast of Central CA. This will keep winds breezy, wind
waves mild, and the NW swell decaying. DS

&&

.FIRE WEATHER...Unseasonably warm and dry conditions will persist
through Wednesday and will aid in quickly drying out fuels. Interior
valley highs will be in the mid 90s with humidity as low as the
upper teens. Strong thermal belts will maintain poor overnight
recoveries at mid and upper elevations. Winds will be mostly gentle
and terrain driven. Northeast winds will be breezing for interior
Del Norte County Wednesday night through Thursday. A surge of breezy
southwest winds will briefly develop in Lake County Thursday
afternoon with minimum RH values in the low to mid 20s. Daytime
temperatures will lower Thursday with more moisture and cloud cover
entering the area. There will be a slight chance (10%) of semi-dry
thunderstorms Thursday afternoon mostly focused around the Yolla
Bollys and over Mendocino and Lake Counties with some slight
potential further north. A slight chance (20%) for additional more
rainfall productive showers and thunderstorms will continue Friday
and Saturday. Storms would have moderate storm movement and would be
relatively wet. There is currently high uncertainty in the exact
details for showers or isolated thunderstorms.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 11 PM this evening to 5 AM PDT
     Thursday for PZZ450.

     Hazardous Seas Watch from late tonight through Thursday
     evening for PZZ450.

     Small Craft Advisory from 5 PM this afternoon to 5 AM PDT
     Thursday for PZZ455.

     Small Craft Advisory from 5 PM this afternoon to 11 PM PDT
     this evening for PZZ470.

     Gale Warning from 11 PM this evening to 5 PM PDT Thursday
     for PZZ470.

     Small Craft Advisory from 5 AM early this morning to 5 PM
     PDT this afternoon for PZZ475.

     Gale Warning from 5 PM this afternoon to 11 AM PDT Thursday
     for PZZ475.

&&

NOTE: The full forecast discussion is now regularly issued between
10 am/pm and 1 pm/am. Additional updates will be issued as needed.

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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png