Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 64, NWS Eureka, CA

December 14, 2021

NWS Eureka, CA issued this hazardous seas warning at Dec 14, 2021, 2:42 AM PST. It was in force for 6 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 14, 2021, 2:42 AM PST (10:42 UTC)
Expired
Dec 14, 2021, 8:34 AM PST
In force
6 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

065 
WHUS76 KEKA 141042
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
242 AM PST Tue Dec 14 2021

PZZ450-141845-
/O.UPG.KEKA.SC.Y.0134.000000T0000Z-211215T1500Z/
/O.NEW.KEKA.SE.W.0064.211214T1042Z-211214T1800Z/
/O.NEW.KEKA.SC.Y.0136.211214T1800Z-211215T1100Z/
/O.EXT.KEKA.GL.W.0058.211215T1100Z-211215T2300Z/
Pt St George to Cape Mendocino out 10 nm-
242 AM PST Tue Dec 14 2021

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

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 15 to 20 feet. For the Small Craft Advisory, south winds 5
  to 15 kt and seas 10 to 13 feet expected. For the Gale Warning,
  south winds 30 to 40 kt with gusts up to 55 kt and seas 8 to 12
  feet expected. 

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

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

&&

$$

PZZ470-141845-
/O.UPG.KEKA.SC.Y.0134.000000T0000Z-211215T1200Z/
/O.NEW.KEKA.SE.W.0064.211214T1042Z-211214T1800Z/
/O.NEW.KEKA.SC.Y.0136.211214T1800Z-211215T1100Z/
/O.EXT.KEKA.GL.W.0058.211215T1100Z-211215T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
242 AM PST Tue Dec 14 2021

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

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 15 to 20 feet. For the Small Craft Advisory, west winds 5 
  to 15 kt with gusts up to 25 kt and seas 12 to 14 feet expected.
  For the Gale Warning, south winds 30 to 40 kt with gusts up to 
  55 kt and seas 9 to 14 feet expected. 

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

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

&&

$$

PZZ455-141845-
/O.EXT.KEKA.SC.Y.0134.000000T0000Z-211215T1400Z/
/O.EXB.KEKA.GL.W.0058.211215T1400Z-211215T2300Z/
Cape Mendocino to Pt Arena out 10 nm-
242 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM PST WEDNESDAY...
...GALE WARNING IN EFFECT FROM 6 AM TO 3 PM PST WEDNESDAY...

* WHAT...For the Small Craft Advisory, seas 11 to 15 feet. For 
  the Gale Warning, south winds 25 to 35 kt with gusts up to 45 kt
  and seas 8 to 11 feet expected. 

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

* WHEN...For the Gale Warning, from 6 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 6 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.

&&

$$

PZZ475-141845-
/O.EXT.KEKA.SC.Y.0134.000000T0000Z-211215T1400Z/
/O.EXB.KEKA.GL.W.0058.211215T1400Z-211215T2300Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
242 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM PST WEDNESDAY...
...GALE WARNING IN EFFECT FROM 6 AM TO 3 PM PST WEDNESDAY...

* WHAT...For the Small Craft Advisory, west winds 10 to 20 kt with
  gusts up to 25 kt and seas 12 to 15 feet. For the Gale Warning,
  south winds 25 to 30 kt with gusts up to 45 kt and seas 10 to 12
  feet expected.

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

* WHEN...For the Gale Warning, from 6 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 6 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.

&&

$$
1 follow-up statement
867 
WHUS76 KEKA 141634
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
834 AM PST Tue Dec 14 2021

PZZ450-150045-
/O.CAN.KEKA.SE.W.0064.000000T0000Z-211214T1800Z/
/O.EXT.KEKA.SC.Y.0136.211214T1634Z-211215T1100Z/
/O.CON.KEKA.GL.W.0058.211215T1100Z-211215T2300Z/
Pt St George to Cape Mendocino out 10 nm-
834 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST WEDNESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...For the Gale Warning, south winds 30 to 40 kt with gusts
  up around 50 kt and seas 8 to 12 feet expected. For the Small 
  Craft Advisory, south winds 5 to 15 kt and seas 10 to 14 feet.

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

* WHEN...For the Gale Warning, from 3 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 3 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.

&&

$$

PZZ470-150045-
/O.CAN.KEKA.SE.W.0064.000000T0000Z-211214T1800Z/
/O.EXT.KEKA.SC.Y.0136.211214T1634Z-211215T1100Z/
/O.CON.KEKA.GL.W.0058.211215T1100Z-211215T2300Z/
Pt St George to Cape Mendocino 10 to 60 nm-
834 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST WEDNESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 3 AM TO 3 PM PST
WEDNESDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...For the Gale Warning, south winds 30 to 40 kt with gusts
  around 50 kt and seas 9 to 14 feet expected. For the Small 
  Craft Advisory, west winds 5 to 15 kt with gusts up to 25 kt and
  seas 12 to 15 feet.

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

* WHEN...For the Gale Warning, from 3 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 3 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.

&&

$$

PZZ455-150045-
/O.CON.KEKA.SC.Y.0134.000000T0000Z-211215T1400Z/
/O.CON.KEKA.GL.W.0058.211215T1400Z-211215T2300Z/
Cape Mendocino to Pt Arena out 10 nm-
834 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
WEDNESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM TO 3 PM PST
WEDNESDAY...

* WHAT...For the Gale Warning, south winds 25 to 35 kt with 
  gusts up to 45 kt and seas 8 to 11 feet expected. For the 
  Small Craft Advisory, seas 11 to 15 feet.

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

* WHEN...For the Gale Warning, from 6 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 6 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.

&&

$$

PZZ475-150045-
/O.CON.KEKA.SC.Y.0134.000000T0000Z-211215T1400Z/
/O.CON.KEKA.GL.W.0058.211215T1400Z-211215T2300Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
834 AM PST Tue Dec 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST
WEDNESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM TO 3 PM PST
WEDNESDAY...

* WHAT...For the Gale Warning, south winds 25 to 30 kt with 
  gusts up to 45 kt and seas 10 to 12 feet expected. For the 
  Small Craft Advisory, west winds 10 to 20 kt with gusts up to 
  25 kt and seas 12 to 14 feet.

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

* WHEN...For the Gale Warning, from 6 AM to 3 PM PST Wednesday. 
  For the Small Craft Advisory, until 6 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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 13, 6:05 PM PSTHigh Wind WatchEKADel Norte18 hr
Dec 13, 6:05 PM PSTWind AdvisoryEKADel Norte, Humboldt, Lake, Mendocino, Trinity45 hr
Dec 14, 2:42 AM PSTSmall Craft AdvisoryEKA25 hr
Dec 14, 12:16 PM PSTHigh Wind WarningEKADel Norte27 hr
Dec 14, 2:21 PM PSTWinter Storm WarningEKADel Norte, Humboldt, Lake, Mendocino, Trinity32 hr
Dec 14, 2:21 PM PSTWinter Weather AdvisoryEKADel Norte, Humboldt, Lake, Mendocino26 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.