Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 65, NWS Eureka, CA

December 15, 2021

NWS Eureka, CA issued this hazardous seas warning at Dec 15, 2021, 12:54 PM PST. It took effect at Dec 15, 2021, 1:00 PM PST. It was in force for 8 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 15, 2021, 12:54 PM PST (20:54 UTC)
In effect from
Dec 15, 2021, 1:00 PM PST
Expired
Dec 15, 2021, 9:00 PM PST
In force
8 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

679 
WHUS76 KEKA 152054
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1254 PM PST Wed Dec 15 2021

PZZ470-160500-
/O.EXP.KEKA.GL.W.0058.000000T0000Z-211215T2100Z/
/O.NEW.KEKA.SE.W.0065.211215T2100Z-211216T0500Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1254 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PST THIS EVENING...
...GALE WARNING WILL EXPIRE AT 1 PM PST THIS AFTERNOON...

* WHAT...Very steep and hazardous seas 11 to 16 feet expected. W
  winds 20 to 25 kt, with gusts to around 30 kt.

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

* WHEN...Until 9 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.

&&

$$

PZZ475-160500-
/O.EXP.KEKA.GL.W.0058.000000T0000Z-211215T2100Z/
/O.NEW.KEKA.SE.W.0065.211215T2100Z-211216T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1254 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PST THIS EVENING...
...GALE WARNING WILL EXPIRE AT 1 PM PST THIS AFTERNOON...

* WHAT...Very steep and hazardous seas 10 to 15 feet expected. W
  winds 20 to 25 kt, with gusts to around 30 kt.

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

* WHEN...Until 9 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.

&&

$$

PZZ450-152300-
/O.CON.KEKA.GL.W.0058.000000T0000Z-211215T2300Z/
Pt St George to Cape Mendocino out 10 nm-
1254 PM PST Wed Dec 15 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON...

* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 
  seas 9 to 14 feet.

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

* WHEN...Until 3 PM PST this afternoon.

* 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.

&&

$$

PZZ455-152300-
/O.CON.KEKA.GL.W.0058.000000T0000Z-211215T2300Z/
Cape Mendocino to Pt Arena out 10 nm-
1254 PM PST Wed Dec 15 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON...

* WHAT...South winds 20 to 25 kt with gusts up to 35 kt and seas 8
  to 12 feet.

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

* WHEN...Until 3 PM PST this afternoon.

* 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.

&&

$$
2 follow-up statements
006 
WHUS76 KEKA 152236
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
236 PM PST Wed Dec 15 2021

PZZ450-160500-
/O.EXP.KEKA.GL.W.0058.000000T0000Z-211215T2300Z/
/O.EXB.KEKA.SE.W.0065.211215T2300Z-211216T0500Z/
Pt St George to Cape Mendocino out 10 nm-
236 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PST THIS EVENING...
...GALE WARNING WILL EXPIRE AT 3 PM PST THIS AFTERNOON...

* WHAT...Very steep and hazardous seas 10 to 15 feet expected.
  Southwest to West winds at 15-25 kts, occasional gusts to 35 
  kts. through early this evening.

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

* WHEN...Until 9 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.

&&

$$

PZZ455-160500-
/O.EXP.KEKA.GL.W.0058.000000T0000Z-211215T2300Z/
/O.EXB.KEKA.SE.W.0065.211215T2300Z-211216T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
236 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PST THIS EVENING...
...GALE WARNING WILL EXPIRE AT 3 PM PST THIS AFTERNOON...

* WHAT...Very steep and hazardous seas 10 to 14 feet expected. 
  Southwest to West winds at 15-25 kts, occasional gusts to 35 
  kts. through early this evening.

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

* WHEN...Until 9 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.

&&

$$

PZZ470-160500-
/O.CON.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
Pt St George to Cape Mendocino 10 to 60 nm-
236 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* WHAT...Very steep and hazardous seas 12 to 15 feet. Southwest 
  to West winds at 15-25 kts, occasional gusts to 35 kts. through 
  early this evening.

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

* WHEN...Until 9 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.

&&

$$

PZZ475-160500-
/O.CON.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
236 PM PST Wed Dec 15 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* WHAT...Very steep and hazardous seas 11 to 15 feet. Southwest
  to West winds at 15-25 kts, occasional gusts to 35 kts. through
  early this evening.

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

* WHEN...Until 9 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.

&&

$$
378 
WHUS76 KEKA 160434
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
834 PM PST Wed Dec 15 2021

PZZ450-161245-
/O.EXP.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
/O.NEW.KEKA.SC.Y.0137.211216T0500Z-211217T0500Z/
Pt St George to Cape Mendocino out 10 nm-
834 PM PST Wed Dec 15 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PST THURSDAY...

* WHAT...West winds 5 to 15 kt with gusts up to 25 kt and seas 
  10 to 14 feet expected.

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

* WHEN...Until 9 PM 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.

&&

$$

PZZ455-161245-
/O.EXP.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
/O.NEW.KEKA.SC.Y.0137.211216T0500Z-211217T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
834 PM PST Wed Dec 15 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PST THURSDAY...

* WHAT...Seas 10 to 13 feet expected.

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

* WHEN...Until 9 PM 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.

&&

$$

PZZ470-161245-
/O.EXP.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
/O.NEW.KEKA.SC.Y.0137.211216T0500Z-211217T0500Z/
Pt St George to Cape Mendocino 10 to 60 nm-
834 PM PST Wed Dec 15 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PST THURSDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and 
  seas 12 to 16 feet expected.

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

* WHEN...Until 9 PM 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.

&&

$$

PZZ475-161245-
/O.EXP.KEKA.SE.W.0065.000000T0000Z-211216T0500Z/
/O.NEW.KEKA.SC.Y.0137.211216T0500Z-211217T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
834 PM PST Wed Dec 15 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PST THURSDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and 
  seas 12 to 15 feet expected.

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

* WHEN...Until 9 PM 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.

&&

$$

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.