Alert archive / California / Hazardous Seas Warnings in 2021

Hazardous Seas Warning 27, NWS Eureka, CA

April 11, 2021

NWS Eureka, CA issued this hazardous seas warning at Apr 11, 2021, 2:14 PM PDT. It took effect at Apr 11, 2021, 8:22 PM PDT. It was in force for 61 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
Apr 11, 2021, 2:14 PM PDT (21:14 UTC)
In effect from
Apr 11, 2021, 8:22 PM PDT
Expired
Apr 14, 2021, 9:00 AM PDT
In force
61 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

004 
WHUS76 KEKA 112114
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
214 PM PDT Sun Apr 11 2021

PZZ450-120515-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210412T0400Z/
/O.NEW.KEKA.SE.W.0027.210412T0400Z-210412T1100Z/
Pt St George to Cape Mendocino out 10 nm-
214 PM PDT Sun Apr 11 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 9 PM THIS EVENING TO
4 AM PDT MONDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with 
  gusts up to 45 kt and seas 12 to 14 feet. For the Hazardous 
  Seas Warning, very steep and hazardous seas 12 to 14 feet 
  expected.

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

* WHEN...For the Gale Warning, until 9 PM PDT this evening. For 
  the Hazardous Seas Warning, from 9 PM this evening to 4 AM PDT 
  Monday.

* 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.

&&

$$

PZZ470-475-120515-
/O.EXT.KEKA.GL.W.0021.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
214 PM PDT Sun Apr 11 2021

...GALE WARNING NOW IN EFFECT UNTIL 3 AM PDT TUESDAY...

* WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 
  13 to 18 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$

PZZ455-120400-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210412T0400Z/
Cape Mendocino to Pt Arena out 10 nm-
214 PM PDT Sun Apr 11 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 40 kt and 
  seas 9 to 13 feet.

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

* WHEN...Until 9 PM PDT this evening.

* 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.

&&

$$
12 follow-up statements
233 
WHUS76 KEKA 120322
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
822 PM PDT Sun Apr 11 2021

PZZ450-121130-
/O.CAN.KEKA.GL.W.0021.000000T0000Z-210412T0400Z/
/O.EXT.KEKA.SE.W.0027.210412T0322Z-210412T1800Z/
Pt St George to Cape Mendocino out 10 nm-
822 PM PDT Sun Apr 11 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 11 AM PDT MONDAY...
...GALE WARNING IS CANCELLED...

* WHAT...Very steep and hazardous seas 9 to 14 feet.

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

* WHEN...Until 11 AM PDT Monday.

* 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.

&&

$$

PZZ455-121130-
/O.CAN.KEKA.GL.W.0021.000000T0000Z-210412T0400Z/
/O.NEW.KEKA.SC.Y.0044.210412T0322Z-210412T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
822 PM PDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM PDT MONDAY...
...GALE WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 35 kt and seas 
  8 to 13 feet.

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

* WHEN...Until 11 AM PDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-475-121130-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
822 PM PDT Sun Apr 11 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY...

* WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 
  13 to 18 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$
706 
WHUS76 KEKA 120911
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
211 AM PDT Mon Apr 12 2021

PZZ450-121715-
/O.EXT.KEKA.SE.W.0027.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino out 10 nm-
211 AM PDT Mon Apr 12 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 3 AM PDT TUESDAY...

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

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$

PZZ470-475-121715-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
211 AM PDT Mon Apr 12 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  12 to 17 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$

PZZ455-121715-
/O.EXT.KEKA.SC.Y.0044.000000T0000Z-210413T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
211 AM PDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT TUESDAY...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  7 to 10 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
569 
WHUS76 KEKA 121534
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
834 AM PDT Mon Apr 12 2021

PZZ470-475-122345-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
834 AM PDT Mon Apr 12 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  12 to 16 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$

PZZ450-122345-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210413T1000Z/
Pt St George to Cape Mendocino out 10 nm-
834 AM PDT Mon Apr 12 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
TUESDAY...

* WHAT...Very steep and hazardous seas 7 to 12 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

* 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.

&&

$$

PZZ455-122345-
/O.CON.KEKA.SC.Y.0044.000000T0000Z-210413T1000Z/
Cape Mendocino to Pt Arena out 10 nm-
834 AM PDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
TUESDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 to 10 feet.

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

* WHEN...Until 3 AM PDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
117 
WHUS76 KEKA 122157
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
257 PM PDT Mon Apr 12 2021

PZZ470-475-130600-
/O.EXT.KEKA.GL.W.0021.000000T0000Z-210414T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
257 PM PDT Mon Apr 12 2021

...GALE WARNING NOW IN EFFECT UNTIL 4 AM PDT WEDNESDAY...

* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 
  11 to 14 feet.

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

* WHEN...Until 4 AM PDT 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.

&&

$$

PZZ450-130600-
/O.EXT.KEKA.SE.W.0027.000000T0000Z-210414T1100Z/
Pt St George to Cape Mendocino out 10 nm-
257 PM PDT Mon Apr 12 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 4 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 6 to 11 feet.

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

* WHEN...Until 4 AM PDT Wednesday.

* 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.

&&

$$

PZZ455-130600-
/O.EXT.KEKA.SC.Y.0044.000000T0000Z-210414T1100Z/
Cape Mendocino to Pt Arena out 10 nm-
257 PM PDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PDT WEDNESDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 to 12 feet.

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

* WHEN...Until 4 AM PDT Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
476 
WHUS76 KEKA 130305
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
805 PM PDT Mon Apr 12 2021

PZZ470-475-131115-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210414T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
805 PM PDT Mon Apr 12 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM PDT WEDNESDAY...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  11 to 14 feet.

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

* WHEN...Until 4 AM PDT 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.

&&

$$

PZZ450-131115-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T1100Z/
Pt St George to Cape Mendocino out 10 nm-
805 PM PDT Mon Apr 12 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 4 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 8 to 11 feet.

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

* WHEN...Until 4 AM PDT Wednesday.

* 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.

&&

$$

PZZ455-131115-
/O.CON.KEKA.SC.Y.0044.000000T0000Z-210414T1100Z/
Cape Mendocino to Pt Arena out 10 nm-
805 PM PDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PDT
WEDNESDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and 
  seas 7 to 12 feet.

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

* WHEN...Until 4 AM PDT Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
113 
WHUS76 KEKA 130925
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
225 AM PDT Tue Apr 13 2021

PZZ455-131730-
/O.UPG.KEKA.SC.Y.0044.000000T0000Z-210414T1100Z/
/O.EXB.KEKA.SE.W.0027.000000T0000Z-210414T0400Z/
Cape Mendocino to Pt Arena out 10 nm-
225 AM PDT Tue Apr 13 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING...

* WHAT...Very steep and hazardous seas 7 to 13 feet.

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

* WHEN...Until 9 PM PDT 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.

&&

$$

PZZ470-475-131730-
/O.EXT.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
225 AM PDT Tue Apr 13 2021

...GALE WARNING NOW IN EFFECT UNTIL 3 AM PDT WEDNESDAY...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  11 to 14 feet.

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

* WHEN...Until 3 AM PDT 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.

&&

$$

PZZ450-131730-
/O.EXT.KEKA.SE.W.0027.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino out 10 nm-
225 AM PDT Tue Apr 13 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 3 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 8 to 13 feet.

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

* WHEN...Until 3 AM PDT Wednesday.

* 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.

&&

$$
626 
WHUS76 KEKA 131553
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
853 AM PDT Tue Apr 13 2021

PZZ470-475-140000-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
853 AM PDT Tue Apr 13 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  11 to 14 feet.

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

* WHEN...Until 3 AM PDT 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.

&&

$$

PZZ450-140000-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino out 10 nm-
853 AM PDT Tue Apr 13 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 8 to 12 feet.

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

* WHEN...Until 3 AM PDT Wednesday.

* 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.

&&

$$

PZZ455-140000-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T0400Z/
Cape Mendocino to Pt Arena out 10 nm-
853 AM PDT Tue Apr 13 2021

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

* WHAT...Very steep and hazardous seas 7 to 12 feet.

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

* WHEN...Until 9 PM PDT 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.

&&

$$
763 
WHUS76 KEKA 132154
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
254 PM PDT Tue Apr 13 2021

PZZ470-475-140600-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
254 PM PDT Tue Apr 13 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  11 to 13 feet.

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

* WHEN...Until 3 AM PDT 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.

&&

$$

PZZ450-140600-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino out 10 nm-
254 PM PDT Tue Apr 13 2021

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 8 to 11 feet.

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

* WHEN...Until 3 AM PDT Wednesday.

* 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.

&&

$$

PZZ455-140400-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T0400Z/
Cape Mendocino to Pt Arena out 10 nm-
254 PM PDT Tue Apr 13 2021

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

* WHAT...Very steep and hazardous seas 7 to 11 feet.

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

* WHEN...Until 9 PM PDT 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.

&&

$$
327 
WHUS76 KEKA 140313
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
813 PM PDT Tue Apr 13 2021

PZZ455-141115-
/O.CAN.KEKA.SE.W.0027.000000T0000Z-210414T0400Z/
/O.NEW.KEKA.SC.Y.0045.210414T0313Z-210414T1200Z/
Cape Mendocino to Pt Arena out 10 nm-
813 PM PDT Tue Apr 13 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM PDT WEDNESDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  6 to 11 feet.

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

* WHEN...Until 5 AM PDT Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-141115-
/O.EXT.KEKA.SE.W.0027.000000T0000Z-210414T1200Z/
Pt St George to Cape Mendocino out 10 nm-
813 PM PDT Tue Apr 13 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 5 AM PDT
WEDNESDAY...

* WHAT...Very steep and hazardous seas 9 to 11 feet.

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

* WHEN...Until 5 AM PDT Wednesday.

* 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.

&&

$$

PZZ470-475-141000-
/O.CON.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
Pt St George to Cape Mendocino 10 to 60 nm-
Cape Mendocino to Pt Arena 10 to 60 nm-
813 PM PDT Tue Apr 13 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY...

* WHAT...North winds 25 to 30 kt with gusts up to 40 kt and seas 
  11 to 13 feet.

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

* WHEN...Until 3 AM PDT 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.

&&

$$
090 
WHUS76 KEKA 140948
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
248 AM PDT Wed Apr 14 2021

PZZ470-141600-
/O.EXP.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
/O.EXB.KEKA.SE.W.0027.210414T1000Z-210414T1600Z/
Pt St George to Cape Mendocino 10 to 60 nm-
248 AM PDT Wed Apr 14 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT THIS MORNING...
...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING...

* WHAT...Very steep and hazardous seas 9 to 13 feet expected.

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

* WHEN...Until 9 AM PDT 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.

&&

$$

PZZ475-141600-
/O.EXP.KEKA.GL.W.0021.000000T0000Z-210414T1000Z/
/O.EXB.KEKA.SE.W.0027.210414T1000Z-210414T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
248 AM PDT Wed Apr 14 2021

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT THIS MORNING...
...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING...

* WHAT...Very steep and hazardous seas 8 to 13 feet expected.

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

* WHEN...Until 9 AM PDT 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.

&&

$$

PZZ450-141300-
/O.EXT.KEKA.SE.W.0027.000000T0000Z-210414T1300Z/
Pt St George to Cape Mendocino out 10 nm-
248 AM PDT Wed Apr 14 2021

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 6 AM PDT EARLY THIS
MORNING...

* WHAT...Very steep and hazardous seas 6 to 11 feet.

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

* WHEN...Until 6 AM PDT early 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.

&&

$$

PZZ455-141300-
/O.EXT.KEKA.SC.Y.0045.000000T0000Z-210414T1300Z/
Cape Mendocino to Pt Arena out 10 nm-
248 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM PDT EARLY THIS
MORNING...

* WHAT...North winds 10 to 20 kt and seas 6 to 11 feet.

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

* WHEN...Until 6 AM PDT early 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.

&&

$$
661 
WHUS76 KEKA 141250
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
550 AM PDT Wed Apr 14 2021

PZZ450-141645-
/O.EXP.KEKA.SE.W.0027.000000T0000Z-210414T1300Z/
/O.NEW.KEKA.SC.Y.0046.210414T1300Z-210415T1000Z/
Pt St George to Cape Mendocino out 10 nm-
550 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT THURSDAY...
...HAZARDOUS SEAS WARNING WILL EXPIRE AT 6 AM PDT EARLY THIS
MORNING...

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

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

* WHEN...Until 3 AM PDT 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.

&&

$$

PZZ455-141400-
/O.EXP.KEKA.SC.Y.0045.000000T0000Z-210414T1300Z/
Cape Mendocino to Pt Arena out 10 nm-
550 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY WILL EXPIRE AT 6 AM PDT EARLY THIS
MORNING...

$$

PZZ470-141600-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T1600Z/
Pt St George to Cape Mendocino 10 to 60 nm-
550 AM PDT Wed Apr 14 2021

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

* WHAT...Very steep and hazardous seas 9 to 11 feet.

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

* WHEN...Until 9 AM PDT 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.

&&

$$

PZZ475-141600-
/O.CON.KEKA.SE.W.0027.000000T0000Z-210414T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
550 AM PDT Wed Apr 14 2021

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

* WHAT...Very steep and hazardous seas 8 to 12 feet.

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

* WHEN...Until 9 AM PDT 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.

&&

$$
863 
WHUS76 KEKA 141553
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
853 AM PDT Wed Apr 14 2021

PZZ470-150000-
/O.EXP.KEKA.SE.W.0027.000000T0000Z-210414T1600Z/
/O.EXB.KEKA.SC.Y.0046.210414T1600Z-210415T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
853 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM PDT THURSDAY...
...HAZARDOUS SEAS WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING...

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 
  7 to 10 feet expected.

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

* WHEN...Until 11 AM PDT 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.

&&

$$

PZZ475-150000-
/O.EXP.KEKA.SE.W.0027.000000T0000Z-210414T1600Z/
/O.EXB.KEKA.SC.Y.0046.210414T1600Z-210415T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
853 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM PDT THURSDAY...
...HAZARDOUS SEAS WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and 
  seas 7 to 11 feet expected.

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

* WHEN...Until 11 AM PDT 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.

&&

$$

PZZ450-150000-
/O.CON.KEKA.SC.Y.0046.000000T0000Z-210415T1000Z/
Pt St George to Cape Mendocino out 10 nm-
853 AM PDT Wed Apr 14 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...

* WHAT...Northwest winds 5 to 15 kt with gusts up to 25 kt and 
  seas 6 to 8 feet.

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

* WHEN...Until 3 AM PDT 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.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 2:21 PM PDTFrost AdvisoryEKADel Norte, Humboldt, Mendocino19 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.