Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 17, NWS Eureka, CA

February 24, 2021

NWS Eureka, CA issued this hazardous seas warning at Feb 24, 2021, 9:11 PM PST. It was in force for 12 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 24, 2021, 9:11 PM PST (05:11 UTC)
Expired
Feb 25, 2021, 9:00 AM PST
In force
12 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

055 
WHUS76 KEKA 250511
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
911 PM PST Wed Feb 24 2021

PZZ475-251315-
/O.EXP.KEKA.GL.W.0013.000000T0000Z-210225T0500Z/
/O.NEW.KEKA.SE.W.0017.210225T0511Z-210225T1700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
911 PM PST Wed Feb 24 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PST THURSDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...North winds 15 to 25 kt with gusts up to 35 kt. Steep
  seas 13 feet, diminishing Thursday. Long period seas 6 to 9 
  feet building to 19 feet Friday.

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

* WHEN...Until 9 AM PST Thursday.

* 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.

&&

$$

PZZ455-251315-
/O.EXT.KEKA.SC.Y.0022.000000T0000Z-210228T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
911 PM PST Wed Feb 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PST SATURDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 35 kt. Steep
  seas 10 feet and diminishing. Long period seas 6 to 9 feet 
  building to 19 feet Friday.

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

* WHEN...Until 9 PM PST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-251315-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210225T1700Z/
Pt St George to Cape Mendocino out 10 nm-
911 PM PST Wed Feb 24 2021

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

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt. Steep
  seas 10 feet and diminishing. Long period seas 6 to 9 feet 
  building to 19 feet Friday.

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

* WHEN...Until 9 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.

&&

$$

PZZ470-251315-
/O.CON.KEKA.SC.Y.0023.000000T0000Z-210227T0200Z/
Pt St George to Cape Mendocino 10 to 60 nm-
911 PM PST Wed Feb 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST FRIDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt. Steep
  seas 11 feet and diminishing. Long period seas 6 to 9 feet 
  building to 19 feet Friday.

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

* WHEN...Until 6 PM 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.

&&

$$
2 follow-up statements
705 
WHUS76 KEKA 251111
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
311 AM PST Thu Feb 25 2021

PZZ475-251700-
/O.CON.KEKA.SE.W.0017.000000T0000Z-210225T1700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
311 AM PST Thu Feb 25 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM THIS 
MORNING...

* WHAT...Very steep and hazardous seas 11 to 13 feet.

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

* WHEN...Until 9 AM 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.

$$

PZZ455-251915-
/O.EXT.KEKA.SC.Y.0022.000000T0000Z-210228T0800Z/
Cape Mendocino to Pt Arena out 10 nm-
311 AM PST Thu Feb 25 2021

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

* WHAT...North winds 20 to 30 kt with occasional gusts to 35 kt and 
  seas 13 to 18 feet.

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

* WHEN...Until midnight Saturday 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.

$$

PZZ470-251915-
/O.EXT.KEKA.SC.Y.0023.000000T0000Z-210228T0800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
311 AM PST Thu Feb 25 2021

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

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

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

* WHEN...Until midnight Saturday 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.

$$

PZZ450-251700-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210225T1700Z/
Pt St George to Cape Mendocino out 10 nm-
311 AM PST Thu Feb 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM THIS MORNING...

* WHAT...North winds 10 to 20 kt with gusts to 25 kt and seas 8 to 
  10 feet.

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

* WHEN...Until 9 AM 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.

$$
068 
WHUS76 KEKA 251644
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
844 AM PST Thu Feb 25 2021

PZZ475-251745-
/O.EXP.KEKA.SE.W.0017.000000T0000Z-210225T1700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
844 AM PST Thu Feb 25 2021

...HAZARDOUS SEAS WARNING WILL EXPIRE AT 9 AM PST THIS MORNING...

$$

PZZ450-251745-
/O.EXP.KEKA.SC.Y.0022.000000T0000Z-210225T1700Z/
Pt St George to Cape Mendocino out 10 nm-
844 AM PST Thu Feb 25 2021

...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING...

$$

PZZ455-260045-
/O.CON.KEKA.SC.Y.0022.000000T0000Z-210228T0800Z/
Cape Mendocino to Pt Arena out 10 nm-
844 AM PST Thu Feb 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PST
SATURDAY NIGHT...

* WHAT...North winds 20 to 30 kt with occasional gusts to 35 kt 
  and seas 13 to 18 feet.

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

* WHEN...Until midnight Saturday 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.

$$

PZZ470-260045-
/O.CON.KEKA.SC.Y.0023.000000T0000Z-210228T0800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
844 AM PST Thu Feb 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT PST
SATURDAY NIGHT...

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

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

* WHEN...Until midnight Saturday 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.

$$

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.