Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 53, NWS Eureka, CA

September 14, 2021

NWS Eureka, CA issued this hazardous seas warning at Sep 14, 2021, 2:59 AM PDT. 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
Sep 14, 2021, 2:59 AM PDT (09:59 UTC)
Expired
Sep 15, 2021, 12:00 AM PDT
In force
21 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

518 
WHUS76 KEKA 140959
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
259 AM PDT Tue Sep 14 2021

PZZ475-141800-
/O.EXP.KEKA.GL.W.0042.000000T0000Z-210914T1000Z/
/O.NEW.KEKA.SE.W.0053.210914T1000Z-210915T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
259 AM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL MIDNIGHT PDT TONIGHT...
...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING...

* WHAT...Very steep and hazardous seas 10 to 13 feet expected.

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ470-141800-
/O.EXT.KEKA.GL.W.0042.000000T0000Z-210914T1000Z/
/O.NEW.KEKA.SE.W.0053.210914T1000Z-210915T0700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
259 AM PDT Tue Sep 14 2021

...GALE WARNING NOW IN EFFECT UNTIL 3 AM PDT EARLY THIS MORNING...
...HAZARDOUS SEAS WARNING IN EFFECT UNTIL MIDNIGHT PDT TONIGHT...

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

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

* WHEN...For the Gale Warning, until 3 AM PDT early this 
  morning. For the Hazardous Seas Warning, until midnight PDT 
  tonight.

* 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.

&&

$$

PZZ450-141800-
/O.EXT.KEKA.SC.Y.0095.000000T0000Z-210917T0700Z/
Pt St George to Cape Mendocino out 10 nm-
259 AM PDT Tue Sep 14 2021

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

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

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

* WHEN...Until midnight PDT 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.

&&

$$

PZZ455-141800-
/O.EXT.KEKA.SC.Y.0094.000000T0000Z-210917T0700Z/
Cape Mendocino to Pt Arena out 10 nm-
259 AM PDT Tue Sep 14 2021

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

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

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

* WHEN...Until midnight PDT 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.

&&

$$
3 follow-up statements
435 
WHUS76 KEKA 141627
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
927 AM PDT Tue Sep 14 2021

PZZ470-150030-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
927 AM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

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

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

* WHEN...For the Gale Warning, until 3 AM PDT early this 
  morning. For the Hazardous Seas Warning, until midnight PDT 
  tonight.

* 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.

&&

$$

PZZ475-150030-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
927 AM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

* WHAT...Very steep and hazardous seas 10 to 13 feet expected.

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ450-150030-
/O.CON.KEKA.SC.Y.0095.000000T0000Z-210917T0700Z/
Pt St George to Cape Mendocino out 10 nm-
927 AM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

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

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

* WHEN...Until midnight PDT 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.

&&

$$

PZZ455-150030-
/O.CON.KEKA.SC.Y.0094.000000T0000Z-210917T0700Z/
Cape Mendocino to Pt Arena out 10 nm-
927 AM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

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

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

* WHEN...Until midnight PDT 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.

&&

$$
967 
WHUS76 KEKA 142132
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
232 PM PDT Tue Sep 14 2021

PZZ470-150545-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
232 PM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

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

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ475-150545-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
232 PM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

* WHAT...Very steep and hazardous seas 10 to 12 feet.

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ450-150545-
/O.CON.KEKA.SC.Y.0095.000000T0000Z-210917T0700Z/
Pt St George to Cape Mendocino out 10 nm-
232 PM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

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

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

* WHEN...Until midnight PDT 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.

&&

$$

PZZ455-150545-
/O.CON.KEKA.SC.Y.0094.000000T0000Z-210917T0700Z/
Cape Mendocino to Pt Arena out 10 nm-
232 PM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and 
  seas 6 to 9 feet.

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

* WHEN...Until midnight PDT 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.

&&

$$
049 
WHUS76 KEKA 150338
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
838 PM PDT Tue Sep 14 2021

PZZ470-150700-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
838 PM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

* WHAT...Very steep and hazardous seas 9 to 11 feet. North winds
  15 to 25 kt, gusts in the lows 30s.

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ475-150700-
/O.CON.KEKA.SE.W.0053.000000T0000Z-210915T0700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
838 PM PDT Tue Sep 14 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TONIGHT...

* WHAT...Very steep and hazardous seas 9 to 12 feet. North winds
  15 to 25 kt, gusts topping out in the lows 30s.

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

* WHEN...Until midnight PDT tonight.

* 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.

&&

$$

PZZ450-151145-
/O.CON.KEKA.SC.Y.0095.000000T0000Z-210917T0700Z/
Pt St George to Cape Mendocino out 10 nm-
838 PM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

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

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

* WHEN...Until midnight PDT Thursday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ455-151145-
/O.CON.KEKA.SC.Y.0094.000000T0000Z-210917T0700Z/
Cape Mendocino to Pt Arena out 10 nm-
838 PM PDT Tue Sep 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PDT
THURSDAY NIGHT...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and 
  seas 6 to 9 feet.

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

* WHEN...Until midnight PDT Thursday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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.