Alert archive / California / Hazardous Seas Warnings in 2023

Hazardous Seas Warning 39, NWS Eureka, CA

December 4, 2023

NWS Eureka, CA issued this hazardous seas warning at Dec 4, 2023, 2:50 AM PST. It took effect at Dec 5, 2023, 10:00 AM PST. It was in force for 22 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 4, 2023, 2:50 AM PST (10:50 UTC)
In effect from
Dec 5, 2023, 10:00 AM PST
Expired
Dec 6, 2023, 7:54 AM PST
In force
22 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

102 
WHUS76 KEKA 041050
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
250 AM PST Mon Dec 4 2023

PZZ470-041900-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.NEW.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
250 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM PST TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 AM TUESDAY TO 3 AM
PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 16 to 21 feet expected. For the Small Craft 
  Advisory, south winds 20 to 25 kt with gusts up to 30 kt and 
  seas 12 to 17 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ475-041900-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.NEW.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
250 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM PST TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 AM TUESDAY TO 3 AM
PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 15 to 20 feet expected. For the Small Craft 
  Advisory, south winds 10 to 20 kt with gusts up to 25 kt and 
  seas 10 to 15 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ450-041900-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T1100Z/
Pt St George to Cape Mendocino out 10 nm-
250 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST WEDNESDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and seas 
  12 to 17 feet.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-041700-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231204T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
250 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS
MORNING...

* WHAT...Seas 8 to 10 feet.

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

* WHEN...Until 9 AM PST this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
10 follow-up statements
540 
WHUS76 KEKA 041644
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
844 AM PST Mon Dec 4 2023

PZZ470-050045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
844 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 16 to 21 feet expected. For the Small Craft 
  Advisory, south winds 20 to 25 kt with gusts up to 30 kt and 
  seas 12 to 17 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ475-050045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
844 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 15 to 20 feet expected. For the Small Craft 
  Advisory, south winds 10 to 20 kt with gusts up to 25 kt and 
  seas 10 to 15 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ455-050045-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
844 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM PST TUESDAY...

* WHAT...Seas 8 to 10 feet.

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

* WHEN...Until 10 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-050045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1100Z/
Pt St George to Cape Mendocino out 10 nm-
844 AM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and seas 
  12 to 17 feet.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
179 
WHUS76 KEKA 042217
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
217 PM PST Mon Dec 4 2023

PZZ470-050630-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
217 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 15 to 20 feet expected. For the Small Craft 
  Advisory, south winds 20 to 25 kt with gusts up to 30 kt and 
  seas 11 to 16 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ475-050630-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
217 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 13 to 18 feet expected. For the Small Craft 
  Advisory, south winds 10 to 15 kt with gusts up to 25 kt and 
  seas 10 to 14 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ455-050630-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T1100Z/
Cape Mendocino to Pt Arena out 10 nm-
217 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST WEDNESDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 30 kt and 
  seas 8 to 13 feet.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-050630-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1100Z/
Pt St George to Cape Mendocino out 10 nm-
217 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 
  10 to 15 feet.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
514 
WHUS76 KEKA 050547
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
947 PM PST Mon Dec 4 2023

PZZ470-051400-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
947 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 15 to 20 feet expected. For the Small Craft Advisory, south
  winds 20 to 25 kt with gusts to 30 kt and seas 11 to 14 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ475-051400-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
947 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 13 to 18 feet expected. For the Small Craft Advisory, south
  winds 10 to 15 kt with gusts to 25 kt and seas 10 to 12 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM Tuesday to 3 
  AM PST Wednesday. For the Small Craft Advisory, until 10 AM 
  PST Tuesday.

* 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.

&&

$$

PZZ450-051400-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Pt St George to Cape Mendocino out 10 nm-
947 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST WEDNESDAY...

* WHAT...South winds 15 to 25 kt with localized gusts to 35 kt 
  and seas 12 to 17 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-051400-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
947 PM PST Mon Dec 4 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST WEDNESDAY...

* WHAT...Southeast winds 15 to 25 kt with localized gusts to 35 
  kt and seas 12 to 17 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
223 
WHUS76 KEKA 051038
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
238 AM PST Tue Dec 5 2023

PZZ470-051845-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
238 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 15 to 20 feet expected. For the Small Craft 
  Advisory, south winds 20 to 25 kt with gusts up to 30 kt and 
  seas 11 to 15 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM this morning 
  to 3 AM PST Wednesday. For the Small Craft Advisory, until 10 
  AM PST 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.

&&

$$

PZZ475-051845-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
238 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 3 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 13 to 18 feet expected. For the Small Craft 
  Advisory, south winds 5 to 15 kt with gusts up to 25 kt and 
  seas 9 to 12 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 AM this morning 
  to 3 AM PST Wednesday. For the Small Craft Advisory, until 10 
  AM PST 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.

&&

$$

PZZ450-051845-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Pt St George to Cape Mendocino out 10 nm-
238 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 
  13 to 18 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-051845-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
238 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 12 to 17 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
528 
WHUS76 KEKA 051634
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
834 AM PST Tue Dec 5 2023

PZZ470-060045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
834 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 15 to 20 feet expected. For the Small Craft 
  Advisory, south winds 20 to 25 kt with gusts up to 30 kt and 
  seas 11 to 13 feet.

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

* WHEN...For the Hazardous Seas Warning, until 3 AM PST 
  Wednesday. For the Small Craft Advisory, until 10 AM PST 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.

&&

$$

PZZ475-060045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.231205T1800Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
834 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 13 to 18 feet expected. For the Small Craft 
  Advisory, south winds 10 to 15 kt with gusts up to 25 kt and 
  seas 9 to 11 feet.

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

* WHEN...For the Hazardous Seas Warning, until 3 AM PST 
  Wednesday. For the Small Craft Advisory, until 10 AM PST 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.

&&

$$

PZZ450-060045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Pt St George to Cape Mendocino out 10 nm-
834 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 
  13 to 18 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-060045-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
834 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 13 to 18 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
389 
WHUS76 KEKA 051801
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1001 AM PST Tue Dec 5 2023

PZZ470-060215-
/O.EXP.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.000000T0000Z-231206T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1001 AM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...
...SMALL CRAFT ADVISORY HAS EXPIRED...

* WHAT...Very steep and hazardous seas 15 to 20 feet.

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

* WHEN...Until 3 AM PST Wednesday.

* 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.

&&

$$

PZZ475-060215-
/O.EXP.KEKA.SC.Y.0133.000000T0000Z-231205T1800Z/
/O.CON.KEKA.SE.W.0039.000000T0000Z-231206T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1001 AM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...
...SMALL CRAFT ADVISORY HAS EXPIRED...

* WHAT...Very steep and hazardous seas 13 to 18 feet.

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

* WHEN...Until 3 AM PST Wednesday.

* 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.

&&

$$

PZZ450-060215-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Pt St George to Cape Mendocino out 10 nm-
1001 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 
  13 to 18 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-060215-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
1001 AM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST
WEDNESDAY...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 13 to 18 feet.

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

* WHEN...Until 9 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
468 
WHUS76 KEKA 052246
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
246 PM PST Tue Dec 5 2023

PZZ470-060700-
/O.EXT.KEKA.SE.W.0039.000000T0000Z-231206T0600Z/
/O.NEW.KEKA.GL.W.0048.231206T0600Z-231206T1600Z/
Pt St George to Cape Mendocino 10 to 60 nm-
246 PM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 8 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 16 to 18 feet. For the Gale Warning, south 
  winds 15 to 25 kt with gusts up to 35 kt and seas 16 to 20 
  feet expected.

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

* WHEN...For the Hazardous Seas Warning, until 10 PM PST this 
  evening. For the Gale Warning, from 10 PM this evening to 8 AM 
  PST Wednesday.

* 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.

&&

$$

PZZ450-060700-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T0600Z/
/O.EXB.KEKA.SE.W.0039.231206T0600Z-231206T1800Z/
Pt St George to Cape Mendocino out 10 nm-
246 PM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 14 to 17 feet expected. For the Small Craft 
  Advisory, south winds 10 to 20 kt with gusts up to 25 kt and 
  seas 13 to 15 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 PM this evening 
  to 10 AM PST Wednesday. For the Small Craft Advisory, until 10 
  PM PST this evening.

* 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.

&&

$$

PZZ455-060700-
/O.EXT.KEKA.SC.Y.0133.000000T0000Z-231206T0600Z/
/O.EXB.KEKA.SE.W.0039.231206T0600Z-231206T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
246 PM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 13 to 17 feet expected. For the Small Craft 
  Advisory, southeast winds 5 to 15 kt with gusts up to 25 kt 
  and seas 9 to 13 feet.

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

* WHEN...For the Hazardous Seas Warning, from 10 PM this evening 
  to 10 AM PST Wednesday. For the Small Craft Advisory, until 10 
  PM PST this evening.

* 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.

&&

$$

PZZ475-060700-
/O.EXT.KEKA.SE.W.0039.000000T0000Z-231206T1300Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
246 PM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 5 AM PST
WEDNESDAY...

* WHAT...Very steep and hazardous seas 13 to 18 feet.

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

* WHEN...Until 5 AM PST Wednesday.

* 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.

&&

$$
603 
WHUS76 KEKA 060421
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
821 PM PST Tue Dec 5 2023

PZZ470-061230-
/O.CON.KEKA.SE.W.0039.000000T0000Z-231206T0600Z/
/O.CON.KEKA.GL.W.0048.231206T0600Z-231206T1600Z/
Pt St George to Cape Mendocino 10 to 60 nm-
821 PM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT UNTIL 8 AM PST WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 16 to 18 feet. For the Gale Warning, south 
  winds 15 to 25 kt with gusts up to 30 kt and seas 16 to 20 
  feet expected.

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

* WHEN...For the Hazardous Seas Warning, until 10 PM PST this 
  evening. For the Gale Warning, until 8 AM PST Wednesday.

* 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.

&&

$$

PZZ450-061230-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T0600Z/
/O.CON.KEKA.SE.W.0039.231206T0600Z-231206T1800Z/
Pt St George to Cape Mendocino out 10 nm-
821 PM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 14 to 17 feet expected. For the Small Craft 
  Advisory, south winds 10 to 15 kt with gusts up to 25 kt and 
  seas 13 to 15 feet.

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

* WHEN...For the Hazardous Seas Warning, until 10 AM PST 
  Wednesday. For the Small Craft Advisory, until 10 PM PST this 
  evening.

* 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.

&&

$$

PZZ455-061230-
/O.CON.KEKA.SC.Y.0133.000000T0000Z-231206T0600Z/
/O.CON.KEKA.SE.W.0039.231206T0600Z-231206T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
821 PM PST Tue Dec 5 2023

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 13 to 17 feet expected. For the Small Craft 
  Advisory, seas 9 to 13 feet.

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

* WHEN...For the Hazardous Seas Warning, until 10 AM PST 
  Wednesday. For the Small Craft Advisory, until 10 PM PST this 
  evening.

* 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.

&&

$$

PZZ475-061230-
/O.CON.KEKA.SE.W.0039.000000T0000Z-231206T1300Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
821 PM PST Tue Dec 5 2023

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 5 AM PST
WEDNESDAY...

* WHAT...Very steep and hazardous seas 13 to 18 feet.

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

* WHEN...Until 5 AM PST Wednesday.

* 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.

&&

$$
780 
WHUS76 KEKA 061058
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
258 AM PST Wed Dec 6 2023

PZZ475-061800-
/O.EXT.KEKA.SE.W.0039.000000T0000Z-231206T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
258 AM PST Wed Dec 6 2023

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Very steep and hazardous seas 16 to 18 feet.

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

* WHEN...Until 10 AM PST 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.

&&

$$

PZZ470-061600-
/O.CON.KEKA.GL.W.0048.000000T0000Z-231206T1600Z/
Pt St George to Cape Mendocino 10 to 60 nm-
258 AM PST Wed Dec 6 2023

...GALE WARNING REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING...

* WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 
  17 to 21 feet.

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

* WHEN...Until 8 AM PST this morning.

* 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.

&&

$$

PZZ450-455-061800-
/O.CON.KEKA.SE.W.0039.000000T0000Z-231206T1800Z/
Pt St George to Cape Mendocino out 10 nm-
Cape Mendocino to Pt Arena out 10 nm-
258 AM PST Wed Dec 6 2023

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Very steep and hazardous seas 13 to 18 feet.

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

* WHEN...Until 10 AM PST 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.

&&

$$
763 
WHUS76 KEKA 061554
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
754 AM PST Wed Dec 6 2023

PZZ470-070000-
/O.CAN.KEKA.GL.W.0048.000000T0000Z-231206T1600Z/
/O.NEW.KEKA.SC.Y.0134.231206T1554Z-231208T1200Z/
Pt St George to Cape Mendocino 10 to 60 nm-
754 AM PST Wed Dec 6 2023

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM PST FRIDAY...
...GALE WARNING IS CANCELLED...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and seas 
  11 to 16 feet.

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

* WHEN...Until 4 AM 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.

&&

$$

PZZ450-455-475-070000-
/O.CAN.KEKA.SE.W.0039.000000T0000Z-231206T1800Z/
/O.NEW.KEKA.SC.Y.0134.231206T1554Z-231208T1200Z/
Pt St George to Cape Mendocino out 10 nm-
Cape Mendocino to Pt Arena out 10 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
754 AM PST Wed Dec 6 2023

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM PST FRIDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and seas 
  11 to 16 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm, Cape 
  Mendocino to Pt Arena out 10 nm and Cape Mendocino to Pt Arena 
  10 to 60 nm.

* WHEN...Until 4 AM 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.

&&

$$

What forecasters said that day

The local office's own words before this hazardous seas warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Eureka, CA wrote its last area forecast discussion before this hazardous seas warning went out at Dec 3, 2:56 PM PST, 11 hours 54 minutes earlier.

Area forecast discussion, Dec 3, 2:56 PM PST, 11 hours 54 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
256 PM PST Sun Dec 3 2023

.SYNOPSIS...Heavy rainfall continues to impact northern Humboldt and
Del Norte counties this afternoon through late tonight. Gusty
ridgetop winds are also accompanying the heavy rain. Additional
light to moderate rainfall is expected early next week, with a
stronger system with the potential of heavy rainfall to occur during
mid week.

&&

.DISCUSSION...Moisture flux associated with a moderately strong
atmospheric river has dropped southward toward Del Norte county
today to bring another round of moderate to heavy rain, mostly for
northern Humboldt and Del Norte Counties. Gusty southerly winds
from 25 to 40 mph are being recorded over the more prominent
coastal headlands and higher terrain across the northern portion
of the region. Late morning RAP mesoanalysis verified anomalous
PWAT values at 1-1.25 inches along the Far North Coast. Additional
rainfall amounts will be 1 to 2 inches for Del Norte and far
northern Humboldt counties from today through late tonight, with
locally higher amounts over higher terrain in Del Norte.
Maintained the Flood Watch for urban/small streams across Del
Norte and the northern portion of Humboldt counties, though it may
require trimming from the southern portion. Elsewhere, lighter
total amounts will range from few hundredths to half of an inch.

Moist onshore flow then continues into early next week and will aid
in additional shower activity. PWATS will remain anomalously high on
Monday, but the highest moisture flux will be north of the CWA, and
there will be more of an easterly component to the low level
winds. This will limit the potential for heavier precipitation
rates on Monday, but the soils will remain nearly saturated to
saturated over the Far North Coast. A stronger frontal system is
forecast to advance east across the NERN PAC as well, with hydro
hazards generally focused over WA/OR Monday night into Tuesday.
The front is then forecast to slide south toward NWRN CA Tuesday
night into Wednesday. A midlevel shortwave impulse may interact
with the front and yield an increase in precipitation rates as the
front moves onshore across the EKA CWA. After Wednesday, a
progressive upper flow regime is forecast to persist and aid in
additional rainfall, along with colder temperatures and some
mountain snow. ZVS/JJW

&&

.AVIATION...Conditions have stayed mostly VFR/MVFR today. There were sporadic
bouts of rain, especially over Del Norte where weather had a "yo yo"
effect: up and down from VFR-IFR. Impactful weather can be expected
for ACV and CEC through afternoon/evening as model data continues a
trend of rain for the northern areas; lesser amounts over Mendocino
and Lake Counties. Added the possibility of mostly directional low
level wind shear (LLWS) at CEC...which may be more concerning for
general aviation. Also, gusty southerly winds will continue at CEC
due a pronounced pressure gradient flow. Precipitation should remain
simply "RA", but a few embedded "SHRA" not out of the question
today. /TA

&&

.MARINE...Southerly winds gusting up to 30 kts will continue
through tonight, mainly focused in the northern zones. The southerly
winds will increase on Monday when gusts with near gale strength in
isolated northern areas. The southerlies will strengthen again
early Tuesday along a dynamic frontal system. A northwest swell
peaked this afternoon in the 12 to 15 foot range at 14 seconds.
The first of two long period west- northwest swells will build
tonight and through Monday, to the mid teens at 18 seconds. A
second larger, long period swell will then begin filling in on
Tuesday, peaking early Wednesday in the upper teens at 18 to 19
seconds.

&&

.HYDROLOGY...Additional moderate to heavy rainfall with a
moderately-strong atmospheric river will continue to impact the
northern portion of the CWA today. 24 hours total rainfall amounts
are forecast to range from 1 to 2 inches in Del Norte and far
northern Humboldt counties. More flash flooding impacts are
likely today mainly across Del Norte County due to additional rain
falling in a short amount of time. CREST soil moisture profile
continues to show the terrain to be saturated. As result, the
additional rainfall today will more quickly develop urban and
small stream flooding, or even flash flooding. In addition, small
rock and mud slides are possible in areas of steep terrain that
are already saturated. Reference the latest flood hazard products
for more information. /ZVS

&&

.BEACH HAZARDS...A long period northwesterly swell will begin to
build in through the coastal waters tonight, and will continue to
build into Monday to around 14 feet at 18 seconds. This swell will
be sufficiently powerful enough for sneaker waves from significant
set behavior and beach runup. Large, unexpected waves can sweep
across the beach without warning, sweeping people into the sea from
rocks, jetties, and beaches. These sneaker waves can also move large
objects such as logs, crushing anyone caught underneath. A second
larger, long period swell will then begin filling in on Tuesday,
peaking early Wednesday in the upper teens at 18 to 19 seconds. This
will generate High Surf Advisory level surf breakers up to 25 feet
Tuesday afternoon through Wednesday.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     Flood Watch through late tonight for CAZ101>103-105-106.

     Beach Hazards Statement from Monday morning through Monday
     afternoon for CAZ104-109.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 9 PM PST this evening for PZZ450.

     Small Craft Advisory until 3 AM PST Monday for PZZ455-475.

     Small Craft Advisory until 9 PM PST Monday for PZZ470.

&&

Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at:
https://www.facebook.com/NWSEureka
https://www.twitter.com/NWSEureka

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

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 4, 2:38 PM PSTHigh Surf AdvisoryEKADel Norte, Humboldt, Mendocino46 hr

Nearby

Hazardous Seas Warnings in California, 2023Every hazardous seas warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.