Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 15, NWS Eureka, CA

February 22, 2021

NWS Eureka, CA issued this hazardous seas warning at Feb 22, 2021, 2:04 PM PST. It was in force for 13 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
Feb 22, 2021, 2:04 PM PST (22:04 UTC)
Expired
Feb 23, 2021, 3:00 AM PST
In force
13 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

022 
WHUS76 KEKA 222204
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
204 PM PST Mon Feb 22 2021

PZZ475-230615-
/O.UPG.KEKA.SC.Y.0022.000000T0000Z-210223T1100Z/
/O.NEW.KEKA.SE.W.0015.210222T2204Z-210223T1100Z/
/O.UPG.KEKA.GL.A.0012.210223T1100Z-210224T2000Z/
/O.NEW.KEKA.GL.W.0013.210223T1100Z-210225T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
204 PM PST Mon Feb 22 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 3 AM PST TUESDAY...
...GALE WARNING IN EFFECT FROM 3 AM TUESDAY TO 9 PM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 14 to 16 feet. For the Gale Warning, north 
  winds 25 to 35 kt with gusts up to 40 kt and seas 14 to 16 
  feet expected.

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

* WHEN...For the Hazardous Seas Warning, until 3 AM PST Tuesday. 
  For the Gale Warning, from 3 AM Tuesday to 9 PM 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.

&&

$$

PZZ470-230615-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210223T1400Z/
/O.UPG.KEKA.GL.A.0012.210223T1400Z-210224T1400Z/
/O.NEW.KEKA.GL.W.0013.210223T1400Z-210224T2000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
204 PM PST Mon Feb 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
TUESDAY...
...GALE WARNING IN EFFECT FROM 6 AM TUESDAY TO NOON PST
WEDNESDAY...

* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts
  up to around 35 kt and seas 13 to 15 feet expected. For the 
  Small Craft Advisory, north winds 15 to 25 kt with gusts up to 
  30 kt and seas 11 to 14 feet.

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

* WHEN...For the Gale Warning, from 6 AM Tuesday to noon PST 
  Wednesday. For the Small Craft Advisory, until 6 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.

&&

$$

PZZ450-230615-
/O.EXT.KEKA.SC.Y.0022.000000T0000Z-210223T2000Z/
/O.NEW.KEKA.SE.W.0016.210223T2000Z-210224T1300Z/
Pt St George to Cape Mendocino out 10 nm-
204 PM PST Mon Feb 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON PST TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM NOON TUESDAY TO 5 AM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 11 to 14 feet expected. For the Small Craft 
  Advisory, north winds 15 to 25 kt with gusts up to 30 kt and 
  seas 10 to 14 feet.

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

* WHEN...For the Hazardous Seas Warning, from noon Tuesday to 5 
  AM PST Wednesday. For the Small Craft Advisory, until noon 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.

&&

$$

PZZ455-230615-
/O.EXT.KEKA.SC.Y.0022.000000T0000Z-210225T0000Z/
Cape Mendocino to Pt Arena out 10 nm-
204 PM PST Mon Feb 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST WEDNESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  10 to 15 feet.

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

* WHEN...Until 4 PM 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.

&&

$$
2 follow-up statements
963 
WHUS76 KEKA 230453
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
853 PM PST Mon Feb 22 2021

PZZ475-231300-
/O.CON.KEKA.SE.W.0015.000000T0000Z-210223T1100Z/
/O.CON.KEKA.GL.W.0013.210223T1100Z-210225T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
853 PM PST Mon Feb 22 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PST
TUESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 3 AM TUESDAY TO 9 PM PST
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 14 to 16 feet. For the Gale Warning, north 
  winds 25 to 35 kt with gusts up to 40 kt and seas 14 to 16 
  feet expected.

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

* WHEN...For the Hazardous Seas Warning, until 3 AM PST Tuesday. 
  For the Gale Warning, from 3 AM Tuesday to 9 PM 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.

&&

$$

PZZ470-231300-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210223T1400Z/
/O.CON.KEKA.GL.W.0013.210223T1400Z-210224T2000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
853 PM PST Mon Feb 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
TUESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM TUESDAY TO NOON PST
WEDNESDAY...

* WHAT...For the Gale Warning, north winds 25 to 30 kt with 
  gusts up to 35 kt and seas 13 to 15 feet expected. For the 
  Small Craft Advisory, north winds 15 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 Gale Warning, from 6 AM Tuesday to noon PST 
  Wednesday. For the Small Craft Advisory, until 6 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.

&&

$$

PZZ450-231300-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210223T2000Z/
/O.CON.KEKA.SE.W.0016.210223T2000Z-210224T1300Z/
Pt St George to Cape Mendocino out 10 nm-
853 PM PST Mon Feb 22 2021

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

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

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

* WHEN...For the Hazardous Seas Warning, from noon Tuesday to 5 
  AM PST Wednesday. For the Small Craft Advisory, until noon 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.

&&

$$

PZZ455-231300-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210225T0000Z/
Cape Mendocino to Pt Arena out 10 nm-
853 PM PST Mon Feb 22 2021

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

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt near Cape
  Mendocino and seas 10 to 15 feet.

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

* WHEN...Until 4 PM 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.

&&

$$
173 
WHUS76 KEKA 231102
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
302 AM PST Tue Feb 23 2021

PZZ475-231915-
/O.EXP.KEKA.SE.W.0015.000000T0000Z-210223T1100Z/
/O.CON.KEKA.GL.W.0013.000000T0000Z-210225T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
302 AM PST Tue Feb 23 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM WEDNESDAY... 

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

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

* WHEN...Until 9 PM 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.

$$

PZZ470-231915-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210223T1400Z/
/O.CON.KEKA.GL.W.0013.210223T1400Z-210224T2000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
302 AM PST Tue Feb 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EARLY THIS 
MORNING...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO NOON 
WEDNESDAY...

* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts to
  35 kt and seas 13 to 15 feet expected. For the Small Craft
  Advisory, north winds 25 to 30 kt with occasional gusts to 35 kt 
  and seas 12 to 15 feet.

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

* WHEN...For the Gale Warning, from 6 AM this morning to noon
  Wednesday. For the Small Craft Advisory, until 6 AM early 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.

$$

PZZ450-231915-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210223T2000Z/
/O.CON.KEKA.SE.W.0016.210223T2000Z-210224T1300Z/
Pt St George to Cape Mendocino out 10 nm-
302 AM PST Tue Feb 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON TODAY... 
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 AM 
WEDNESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 12 to 14 feet expected. For the Small Craft Advisory, north
  winds 15 to 25 kt with gusts to 30 kt and seas 12 to 14 feet.

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

* WHEN...For the Hazardous Seas Warning, from noon today to 5 AM
  Wednesday. For the Small Craft Advisory, until noon today.

* 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.

$$

PZZ455-231915-
/O.EXT.KEKA.SC.Y.0022.000000T0000Z-210226T0800Z/
Cape Mendocino to Pt Arena out 10 nm-
302 AM PST Tue Feb 23 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT THURSDAY 
NIGHT...

* WHAT...North winds 20 to 30 kt with occasional gusts to 35 kt and 
  seas 9 to 14 feet.

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

* WHEN...Until midnight Thursday night.

* 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
Feb 22, 2:04 PM PSTGale WarningEKA55 hr
Feb 22, 2:04 PM PSTHazardous Seas WarningEKA43 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.