Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 11, NWS Eureka, CA

February 3, 2021

NWS Eureka, CA issued this hazardous seas warning at Feb 3, 2021, 2:46 AM 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 3, 2021, 2:46 AM PST (10:46 UTC)
Expired
Feb 3, 2021, 2:35 PM PST
In force
12 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

517 
WHUS76 KEKA 031046
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
246 AM PST Wed Feb 3 2021

PZZ475-031900-
/O.UPG.KEKA.SC.Y.0015.000000T0000Z-210203T1200Z/
/O.NEW.KEKA.SE.W.0011.210203T1046Z-210204T0000Z/
/O.CAN.KEKA.GL.W.0010.210203T1200Z-210203T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
246 AM PST Wed Feb 3 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...GALE WARNING IS CANCELLED...

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

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

* WHEN...Until 4 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.

&&

$$

PZZ470-031900-
/O.CAN.KEKA.GL.W.0010.000000T0000Z-210203T1500Z/
/O.NEW.KEKA.SE.W.0011.210203T1046Z-210204T0000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
246 AM PST Wed Feb 3 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...GALE WARNING IS CANCELLED...

* WHAT...Very steep and hazardous seas 12 to 14 feet.

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

* WHEN...Until 4 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.

&&

$$

PZZ450-031900-
/O.CAN.KEKA.GL.W.0010.000000T0000Z-210203T1500Z/
/O.NEW.KEKA.SC.Y.0016.210203T1046Z-210204T1000Z/
Pt St George to Cape Mendocino out 10 nm-
246 AM PST Wed Feb 3 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM PST THURSDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  8 to 11 feet.

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

* WHEN...Until 2 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.

&&

$$

PZZ455-031900-
/O.NEW.KEKA.SC.Y.0016.210203T1500Z-210204T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
246 AM PST Wed Feb 3 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO 2 AM
PST THURSDAY...

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

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

* WHEN...From 7 AM this morning to 2 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.

&&

$$
2 follow-up statements
987 
WHUS76 KEKA 031622
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
822 AM PST Wed Feb 3 2021

PZZ470-475-040030-
/O.EXT.KEKA.SE.W.0011.000000T0000Z-210204T0200Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
822 AM PST Wed Feb 3 2021

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

* WHAT...Very steep and hazardous seas 12 to 14 feet.

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

&&

$$

PZZ450-040030-
/O.CON.KEKA.SC.Y.0016.000000T0000Z-210204T1000Z/
Pt St George to Cape Mendocino out 10 nm-
822 AM PST Wed Feb 3 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
THURSDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  8 to 11 feet.

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

* WHEN...Until 2 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.

&&

$$

PZZ455-040030-
/O.CON.KEKA.SC.Y.0016.000000T0000Z-210204T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
822 AM PST Wed Feb 3 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PST
THURSDAY...

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

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

* WHEN...From 7 AM this morning to 2 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.

&&

$$
494 
WHUS76 KEKA 032235
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
235 PM PST Wed Feb 3 2021

PZZ470-475-040645-
/O.CAN.KEKA.SE.W.0011.000000T0000Z-210204T0200Z/
/O.EXB.KEKA.SC.Y.0016.000000T0000Z-210205T0800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
235 PM PST Wed Feb 3 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT PST THURSDAY
NIGHT...
...HAZARDOUS SEAS WARNING IS CANCELLED...

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

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

* WHEN...Until midnight PST 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.

&&

$$

PZZ450-040645-
/O.EXT.KEKA.SC.Y.0016.000000T0000Z-210205T0800Z/
Pt St George to Cape Mendocino out 10 nm-
235 PM PST Wed Feb 3 2021

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

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 
  8 to 11 feet.

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

* WHEN...Until midnight PST 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.

&&

$$

PZZ455-040645-
/O.EXT.KEKA.SC.Y.0016.000000T0000Z-210205T0800Z/
Cape Mendocino to Pt Arena out 10 nm-
235 PM PST Wed Feb 3 2021

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

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

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

* WHEN...Until midnight PST 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 2, 8:54 PM PSTSmall Craft AdvisoryEKA6 hr
Feb 3, 2:46 AM PSTSmall Craft AdvisoryEKA6 days

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.