Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 67, NWS Eureka, CA

December 20, 2021

NWS Eureka, CA issued this hazardous seas warning at Dec 20, 2021, 2:32 PM PST. It took effect at Dec 20, 2021, 9:14 PM PST. It was in force for 21 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 20, 2021, 2:32 PM PST (22:32 UTC)
In effect from
Dec 20, 2021, 9:14 PM PST
Expired
Dec 21, 2021, 6:00 PM PST
In force
21 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

199 
WHUS76 KEKA 202232
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
232 PM PST Mon Dec 20 2021

PZZ470-210645-
/O.CON.KEKA.GL.W.0059.000000T0000Z-211221T1200Z/
/O.NEW.KEKA.SE.W.0067.211221T1200Z-211221T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
232 PM PST Mon Dec 20 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 AM TO 10 AM PST
TUESDAY...

* WHAT...For the Gale Warning, southeast winds 25 to 35 kt with 
  gusts up to 45 kt and seas 10 to 15 feet. For the Hazardous 
  Seas Warning, very steep and hazardous seas 9 to 14 feet 
  expected.

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

* WHEN...For the Gale Warning, until 4 AM PST Tuesday. For the 
  Hazardous Seas Warning, from 4 AM to 10 AM PST Tuesday.

* 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.

&&

$$

PZZ475-210645-
/O.CON.KEKA.GL.W.0059.000000T0000Z-211221T1800Z/
/O.NEW.KEKA.SE.W.0067.211221T1800Z-211222T0000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
232 PM PST Mon Dec 20 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 AM TO 4 PM PST
TUESDAY...

* WHAT...For the Gale Warning, southeast winds 25 to 35 kt with
  gusts up to 40 kt and seas 10 to 15 feet. For the Hazardous Seas
  Warning, very steep and hazardous seas 9 to 13 feet expected.

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

* WHEN...For the Gale Warning, until 10 AM PST Tuesday. For the 
  Hazardous Seas Warning, from 10 AM to 4 PM PST Tuesday.

* 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.

&&

$$

PZZ455-210645-
/O.EXT.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
232 PM PST Mon Dec 20 2021

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

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 7 to 11 feet.

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

* WHEN...Until 10 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-210600-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T0600Z/
Pt St George to Cape Mendocino out 10 nm-
232 PM PST Mon Dec 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 7 to 11 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 crafts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
7 follow-up statements
393 
WHUS76 KEKA 210514
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
914 PM PST Mon Dec 20 2021

PZZ475-211315-
/O.CAN.KEKA.GL.W.0059.000000T0000Z-211221T1800Z/
/O.NEW.KEKA.SE.W.0068.211221T0514Z-211221T1800Z/
/O.CAN.KEKA.SE.W.0067.211221T1800Z-211222T0000Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
914 PM PST Mon Dec 20 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 10 AM PST TUESDAY...
...GALE WARNING IS CANCELLED...

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

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

* WHEN...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.

&&

$$

PZZ470-211315-
/O.CAN.KEKA.GL.W.0059.000000T0000Z-211221T1200Z/
/O.EXT.KEKA.SE.W.0067.211221T0514Z-211221T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
914 PM PST Mon Dec 20 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 10 AM PST TUESDAY...
...GALE WARNING IS CANCELLED...

* WHAT...Very steep and hazardous seas 8 to 13 feet.

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

* WHEN...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.

&&

$$

PZZ450-211315-
/O.EXT.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino out 10 nm-
914 PM PST Mon Dec 20 2021

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

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 5 to 7 feet.

* WHERE...Pt St George to Cape Mendocino 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.

&&

$$

PZZ455-211315-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
914 PM PST Mon Dec 20 2021

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

* WHAT...Southeast winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 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.

&&

$$
536 
WHUS76 KEKA 210821
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1221 AM PST Tue Dec 21 2021

PZZ475-211630-
/O.CAN.KEKA.SE.W.0068.000000T0000Z-211221T1800Z/
/O.NEW.KEKA.GL.W.0060.211221T0821Z-211222T0200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1221 AM PST Tue Dec 21 2021

...GALE WARNING IN EFFECT UNTIL 6 PM PST THIS EVENING...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...Southeast winds 20 to 30 kt with gusts up to 40 kt and 
  seas 10 to 14 feet.

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

* WHEN...Until 6 PM PST 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.

&&

$$

PZZ470-211630-
/O.CON.KEKA.SE.W.0067.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1221 AM PST Tue Dec 21 2021

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

* WHAT...Very steep and hazardous seas 8 to 13 feet.

* WHERE...Pt St George to Cape Mendocino 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.

&&

$$

PZZ450-211630-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino out 10 nm-
1221 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Southeast winds 5 to 15 kt and seas 5 to 7 feet.

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

* WHEN...Until 10 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.

&&

$$

PZZ455-211630-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
1221 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 7 to 10 feet.

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

* WHEN...Until 10 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.

&&

$$
170 
WHUS76 KEKA 211111
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
311 AM PST Tue Dec 21 2021

PZZ475-211800-
/O.EXT.KEKA.GL.W.0060.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
311 AM PST Tue Dec 21 2021

...GALE WARNING NOW IN EFFECT UNTIL 10 AM PST THIS MORNING...

* WHAT...Southeast winds 25 to 30 kt with gusts up to 40 kt and 
  seas 10 to 14 feet.

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

* WHEN...Until 10 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.

&&

$$

PZZ470-211800-
/O.CON.KEKA.SE.W.0067.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
311 AM PST Tue Dec 21 2021

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

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

* WHERE...Pt St George to Cape Mendocino 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.

&&

$$

PZZ450-211800-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino out 10 nm-
311 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Seas 5 to 7 feet.

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

* WHEN...Until 10 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.

&&

$$

PZZ455-211800-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
311 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Southeast winds 15 to 20 kt with gusts up to 30 kt and 
  seas 7 to 9 feet.

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

* WHEN...Until 10 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.

&&

$$
352 
WHUS76 KEKA 211634
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
834 AM PST Tue Dec 21 2021

PZZ475-211800-
/O.CON.KEKA.GL.W.0060.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
834 AM PST Tue Dec 21 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING...

* WHAT...Southeast winds 25 to 30 kt with gusts up to 35 kt and 
  seas 12 to 15 feet.

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

* WHEN...Until 10 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.

&&

$$

PZZ470-211800-
/O.CON.KEKA.SE.W.0067.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
834 AM PST Tue Dec 21 2021

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

* WHAT...Very steep and hazardous seas 10 to 14 feet. Southeast
  winds 15 to 25 kt with gusts up to 30 kt

* WHERE...Pt St George to Cape Mendocino 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.

&&

$$

PZZ450-211800-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino out 10 nm-
834 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Seas 6 to 10 feet.

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

* WHEN...Until 10 AM PST this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-211800-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
834 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Southeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 7 to 12 feet.

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

* WHEN...Until 10 AM PST this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
960 
WHUS76 KEKA 211736
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
936 AM PST Tue Dec 21 2021

PZZ475-220145-
/O.EXP.KEKA.GL.W.0060.000000T0000Z-211221T1800Z/
/O.EXB.KEKA.SE.W.0067.211221T1800Z-211222T0200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
936 AM PST Tue Dec 21 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 6 PM PST THIS EVENING...
...GALE WARNING WILL EXPIRE AT 10 AM PST THIS MORNING...

* WHAT...Very steep and hazardous seas 10 to 15 feet expected.
  Southeast 15 to 25 kts, with gusts to around 30 kts.

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

* WHEN...Until 6 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.

&&

$$

PZZ450-211845-
/O.EXP.KEKA.SC.Y.0139.000000T0000Z-211221T1800Z/
Pt St George to Cape Mendocino out 10 nm-
936 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING...

$$

PZZ470-212300-
/O.EXT.KEKA.SE.W.0067.000000T0000Z-211221T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
936 AM PST Tue Dec 21 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...

* WHAT...Very steep and hazardous seas 8 to 12 feet. Southeast 15
  to 25 kts, with gusts to around 30 kts.

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

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

* 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.

&&

$$

PZZ455-212300-
/O.EXT.KEKA.SC.Y.0139.000000T0000Z-211221T2300Z/
Cape Mendocino to Pt Arena out 10 nm-
936 AM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 8 to 12 feet.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
706 
WHUS76 KEKA 212237
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
237 PM PST Tue Dec 21 2021

PZZ470-220645-
/O.EXP.KEKA.SE.W.0067.000000T0000Z-211221T2300Z/
/O.EXB.KEKA.SC.Y.0139.211221T2300Z-211223T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
237 PM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PST THURSDAY...
...HAZARDOUS SEAS WARNING WILL EXPIRE AT 3 PM PST THIS
AFTERNOON...

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 
  7 to 12 feet expected.

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

* WHEN...Until 3 AM PST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ475-220200-
/O.CON.KEKA.SE.W.0067.000000T0000Z-211222T0200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
237 PM PST Tue Dec 21 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...

* WHAT...Very steep and hazardous seas 9 to 13 feet. South to
  southeast winds 15 to 25 kts with gusts up to 30 kts.

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

* WHEN...Until 6 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.

&&

$$

PZZ450-220645-
/O.NEW.KEKA.SC.Y.0140.211222T1800Z-211223T1100Z/
Pt St George to Cape Mendocino out 10 nm-
237 PM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 3 AM
PST THURSDAY...

* WHAT...South winds 15 to 20 kt with gusts up to 30 kt and seas 
  5 to 8 feet expected.

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

* WHEN...From 10 AM Wednesday to 3 AM PST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-220200-
/O.EXT.KEKA.SC.Y.0139.000000T0000Z-211222T0200Z/
Cape Mendocino to Pt Arena out 10 nm-
237 PM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM PST THIS
EVENING...

* WHAT...Southeast winds 10 to 15 kt and seas 7 to 12 feet.

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

* WHEN...Until 6 PM PST this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
351 
WHUS76 KEKA 220206
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
606 PM PST Tue Dec 21 2021

PZZ475-220315-
/O.EXP.KEKA.SE.W.0067.000000T0000Z-211222T0200Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
606 PM PST Tue Dec 21 2021

...HAZARDOUS SEAS WARNING HAS EXPIRED...


$$

PZZ455-220315-
/O.EXP.KEKA.SC.Y.0139.000000T0000Z-211222T0200Z/
Cape Mendocino to Pt Arena out 10 nm-
606 PM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...


$$

PZZ450-221015-
/O.CON.KEKA.SC.Y.0140.211222T1800Z-211223T1100Z/
Pt St George to Cape Mendocino out 10 nm-
606 PM PST Tue Dec 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO
3 AM PST THURSDAY...

* WHAT...South winds 15 to 20 kt with gusts up to 30 kt and seas 
  5 to 8 feet expected.

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

* WHEN...From 10 AM Wednesday to 3 AM 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.

&&

$$

PZZ470-221015-
/O.CON.KEKA.SC.Y.0139.000000T0000Z-211223T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
606 PM PST Tue Dec 21 2021

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

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 
  6 to 9 feet.

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

* WHEN...Until 3 AM 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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 20, 2:24 AM PSTWinter Storm WatchEKA35 hr

Nearby

Hazardous Seas Warnings in California, 2021Every hazardous seas warning in 2021

Sources

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