Alert archive / California / Hazardous Seas Warnings in 2020

Hazardous Seas Warning 3, NWS Eureka, CA

February 2, 2020

NWS Eureka, CA issued this hazardous seas warning at Feb 2, 2020, 2:42 PM PST. It took effect at Feb 2, 2020, 10:00 PM PST. It was in force for 23 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 2, 2020, 2:42 PM PST (22:42 UTC)
In effect from
Feb 2, 2020, 10:00 PM PST
Expired
Feb 3, 2020, 9:00 PM PST
In force
23 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

207 
WHUS76 KEKA 022242
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
242 PM PST Sun Feb 2 2020

PZZ475-030645-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200203T0600Z/
/O.NEW.KEKA.SE.W.0003.200203T0600Z-200203T1800Z/
/O.EXT.KEKA.GL.W.0006.200203T1800Z-200204T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
242 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST MONDAY...
...GALE WARNING NOW IN EFFECT FROM 10 AM MONDAY TO 3 AM PST
TUESDAY...

* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts
  up to 40 kt and seas 13 to 16 feet expected. For the Hazardous
  Seas Warning, very steep and hazardous seas 14 to 17 feet around
  10 seconds are expected. For the Small Craft Advisory, northwest
  winds 20 to 30 kt with localized gusts up to 40 kt and seas 13 
  to 15 feet.

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

* WHEN...For the Gale Warning, from 10 AM Monday to 3 AM PST 
  Tuesday. For the Hazardous Seas Warning, from 10 PM this 
  evening to 10 AM PST Monday. For the Small Craft Advisory, 
  until 10 PM PST 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.

&&

$$

PZZ455-030645-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200203T1200Z/
/O.NEW.KEKA.SE.W.0003.200203T1200Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
242 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM PST MONDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 AM TO 9 PM PST
MONDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 12 to 15 feet around 9 to 10 seconds are expected. For the
  Small Craft Advisory, north winds 15 to 25 kt with gusts up to 
  30 kt and seas 11 to 13 feet.

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

* WHEN...For the Hazardous Seas Warning, from 4 AM to 9 PM PST 
  Monday. For the Small Craft Advisory, until 4 AM PST 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.

&&

$$

PZZ450-030645-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino out 10 nm-
242 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST TUESDAY...

* WHAT...N winds 15 to 25 kt. Seas 10 to 12 ft building up to 15 
  ft on Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-030645-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
242 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PST TUESDAY...

* WHAT...N winds 15 to 25 kt with local gusts over 30 kt. Seas 
  10 to 12 ft today, building to 14 to 17 ft tonight and Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
6 follow-up statements
673 
WHUS76 KEKA 022344
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
344 PM PST Sun Feb 2 2020

PZZ475-030745-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200203T0300Z/
/O.EXT.KEKA.GL.W.0006.200203T0300Z-200204T1100Z/
/O.CAN.KEKA.SE.W.0003.200203T0600Z-200203T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
344 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM PST THIS
EVENING...
...GALE WARNING NOW IN EFFECT FROM 7 PM THIS EVENING TO 3 AM PST
TUESDAY...
...HAZARDOUS SEAS WARNING IS CANCELLED...

* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts
  up to 40 kt and seas 13 to 16 feet expected. For the Small 
  Craft Advisory, northwest winds 20 to 30 kt with localized gusts
  up to 40 kt and seas 13 to 15 feet.

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

* WHEN...For the Gale Warning, from 7 PM this evening to 3 AM 
  PST Tuesday. For the Small Craft Advisory, until 7 PM PST 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.

&&

$$

PZZ455-030745-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200203T1200Z/
/O.CON.KEKA.SE.W.0003.200203T1200Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
344 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 AM TO 9 PM PST
MONDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 12 to 15 feet around 9 to 10 seconds are 
  expected. For the Small Craft Advisory, north winds 15 to 25 
  kt with gusts up to 30 kt and seas 11 to 13 feet.

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

* WHEN...For the Hazardous Seas Warning, from 4 AM to 9 PM PST 
  Monday. For the Small Craft Advisory, until 4 AM PST 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.

&&

$$

PZZ450-030745-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino out 10 nm-
344 PM PST Sun Feb 2 2020

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

* WHAT...N winds 15 to 25 kt. Seas 10 to 12 ft building up to 15 
  ft on Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-030745-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
344 PM PST Sun Feb 2 2020

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

* WHAT...N winds 15 to 25 kt with local gusts over 30 kt. Seas 
  10 to 12 ft today, building to 14 to 17 ft tonight and Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
090 
WHUS76 KEKA 030430
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
830 PM PST Sun Feb 2 2020

PZZ470-031230-
/O.UPG.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
/O.EXB.KEKA.GL.W.0006.000000T0000Z-200203T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
830 PM PST Sun Feb 2 2020

...GALE WARNING IN EFFECT UNTIL 10 AM PST MONDAY...

* WHAT...N winds 20 to 30 kt with gusts around 35 kt. Steep seas 
  building to 13 to 17 ft tonight and Monday.

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

* WHEN...Until 10 AM PST Monday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

* ADDITIONAL DETAILS...

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.

&&

$$

PZZ475-031230-
/O.CON.KEKA.GL.W.0006.000000T0000Z-200204T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
830 PM PST Sun Feb 2 2020

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

* WHAT...N winds 25 to 30 kt with gusts to 40 kt and steep seas 
  building to 13 to 17 feet tonight through Monday. 

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

* WHEN...Until 3 AM PST 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.

&&

$$

PZZ455-031230-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200203T1200Z/
/O.CON.KEKA.SE.W.0003.200203T1200Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
830 PM PST Sun Feb 2 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 AM TO 9 PM PST
MONDAY...

* WHAT...For the Hazardous Seas Warning, very steep seas 13 to 15
  feet around 10 seconds are expected. For the Small Craft 
  Advisory, north winds 15 to 25 kt with gusts up to 30 kt and 
  steep seas 11 to 13 feet are expected.

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

* WHEN...For the Hazardous Seas Warning, from 4 AM to 9 PM PST 
  Monday. For the Small Craft Advisory, until 4 AM PST 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.

&&

$$

PZZ450-031230-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino out 10 nm-
830 PM PST Sun Feb 2 2020

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

* WHAT...N winds 15 to 25 kt. Seas 10 to 12 ft building up to 15
  ft late tonight and Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
858 
WHUS76 KEKA 031049
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
249 AM PST Mon Feb 3 2020

PZZ470-031800-
/O.CON.KEKA.GL.W.0006.000000T0000Z-200203T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
249 AM PST Mon Feb 3 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING...

* WHAT...N winds 20 to 30 kt with gusts around 35 kt. Steep seas 
  building to 13 to 17 ft tonight and Monday.

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

* WHEN...Until 10 AM PST 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.

&&

$$

PZZ475-031900-
/O.CON.KEKA.GL.W.0006.000000T0000Z-200204T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
249 AM PST Mon Feb 3 2020

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

* WHAT...N winds 25 to 30 kt with gusts to 40 kt and steep seas 
  building to 13 to 17 feet tonight through Monday.

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

* WHEN...Until 3 AM PST 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.

&&

$$

PZZ455-031900-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200203T1200Z/
/O.CON.KEKA.SE.W.0003.200203T1200Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
249 AM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST EARLY
THIS MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING...

* WHAT...For the Hazardous Seas Warning, very steep seas 13 to 
  15 feet around 10 seconds are expected. For the Small Craft 
  Advisory, north winds 15 to 25 kt with gusts up to 30 kt and 
  steep seas 11 to 13 feet are expected.

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

* WHEN...For the Hazardous Seas Warning, from 4 AM to 9 PM PST 
  Monday. For the Small Craft Advisory, until 4 AM PST 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.

&&

$$

PZZ450-031900-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200204T1700Z/
Pt St George to Cape Mendocino out 10 nm-
249 AM PST Mon Feb 3 2020

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

* WHAT...N winds 15 to 25 kt. Seas 10 to 12 ft building up to 15 
  ft late tonight and Monday.

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

* WHEN...Until 9 AM PST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
077 
WHUS76 KEKA 031652
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
852 AM PST Mon Feb 3 2020

PZZ470-040100-
/O.EXT.KEKA.GL.W.0006.000000T0000Z-200203T1700Z/
/O.EXB.KEKA.SC.Y.0009.200203T1700Z-200205T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
852 AM PST Mon Feb 3 2020

...GALE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PST WEDNESDAY...

* WHAT...N winds 15 to 25 kt. A few gusts to 35 kt through this
  evening. Seas 12 to 15 ft today subsiding to 10 to 12 ft 
  tonight and Tuesday.

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

* WHEN...For the Gale Warning, until 9 AM PST this morning. For 
  the Small Craft Advisory, until 3 AM PST Wednesday.

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

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.

&&

$$

PZZ475-040100-
/O.CON.KEKA.GL.W.0006.000000T0000Z-200204T1100Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
852 AM PST Mon Feb 3 2020

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

* WHAT...N winds 25 to 30 kt with gusts to 40 kt. Seas 13 to 17
  feet.

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

* WHEN...Until 3 AM PST 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.

&&

$$

PZZ455-040100-
/O.CON.KEKA.SE.W.0003.000000T0000Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
852 AM PST Mon Feb 3 2020

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

* WHAT...Very steep seas 12 to 15 feet around 10 seconds.

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

* WHEN...For the Hazardous Seas Warning, from 4 AM to 9 PM PST
  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.

&&

$$

PZZ450-040100-
/O.EXT.KEKA.SC.Y.0009.000000T0000Z-200205T1100Z/
Pt St George to Cape Mendocino out 10 nm-
852 AM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PST WEDNESDAY...

* WHAT...N winds 15 to 25 kt. Seas 12 to 15 ft subsiding to 10 to
  12 ft tonight and Tuesday.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
030 
WHUS76 KEKA 032200
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
200 PM PST Mon Feb 3 2020

PZZ475-040600-
/O.EXT.KEKA.GL.W.0006.000000T0000Z-200205T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
200 PM PST Mon Feb 3 2020

...GALE WARNING NOW IN EFFECT UNTIL 9 PM PST TUESDAY...

* WHAT...N winds 25 to 30 kt with gusts to 40 kt. Seas 13 to 17
  feet tonight diminishing to 12 to 14 feet on Tuesday.

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

* WHEN...Until 9 PM PST 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.

&&

$$

PZZ455-040500-
/O.CON.KEKA.SE.W.0003.000000T0000Z-200204T0500Z/
Cape Mendocino to Pt Arena out 10 nm-
200 PM PST Mon Feb 3 2020

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

* WHAT...Very steep seas 12 to 15 feet around 10 seconds. N winds
  15 to 25 kt with localized gusts to 35 kt.

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

* WHEN...Until 9 PM PST 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.

&&

$$

PZZ450-040600-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200205T1100Z/
Pt St George to Cape Mendocino out 10 nm-
200 PM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...N winds 15 to 25 kt. Localized gusts to 35 kt near Cape
  Mendocino. Seas 12 to 15 ft subsiding to 10 to 12 ft tonight 
  and Tuesday.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-040600-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200205T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
200 PM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...N winds 15 to 25 kt. Localized gusts to 35 kt. Seas 12 
  to 15 ft today subsiding to 10 to 13 ft tonight and Tuesday.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
325 
WHUS76 KEKA 040435
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
835 PM PST Mon Feb 3 2020

PZZ455-041245-
/O.EXP.KEKA.SE.W.0003.000000T0000Z-200204T0500Z/
/O.NEW.KEKA.SC.Y.0010.200204T0500Z-200205T1100Z/
Cape Mendocino to Pt Arena out 10 nm-
835 PM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PST WEDNESDAY...
...HAZARDOUS SEAS WARNING WILL EXPIRE AT 9 PM PST THIS EVENING...

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

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ475-041245-
/O.CON.KEKA.GL.W.0006.000000T0000Z-200205T0500Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
835 PM PST Mon Feb 3 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PST TUESDAY...

* WHAT...N winds 25 to 30 kt with gusts to 40 kt. Seas 13 to 17 
  feet tonight diminishing to 12 to 14 feet on Tuesday.

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

* WHEN...Until 9 PM PST 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.

&&

$$

PZZ450-041245-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200205T1100Z/
Pt St George to Cape Mendocino out 10 nm-
835 PM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...N winds 15 to 25 kt. Localized gusts to 35 kt near Cape 
  Mendocino. Seas 12 to 15 ft subsiding to 10 to 12 ft tonight 
  and Tuesday.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ470-041245-
/O.CON.KEKA.SC.Y.0009.000000T0000Z-200205T1100Z/
Pt St George to Cape Mendocino 10 to 60 nm-
835 PM PST Mon Feb 3 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PST
WEDNESDAY...

* WHAT...N winds 15 to 25 kt. Localized gusts to 35 kt. Seas 12 
  to 15 ft today subsiding to 10 to 13 ft tonight and Tuesday.

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

* WHEN...Until 3 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

What forecasters said that day

The local office's own words before this hazardous seas warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Eureka, CA wrote its last area forecast discussion before this hazardous seas warning went out at Feb 2, 2:37 PM PST, 5 minutes earlier.

Area forecast discussion, Feb 2, 2:37 PM PST, 5 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
237 PM PST Sun Feb 2 2020

.SYNOPSIS...Rain and snow showers will continue this evening and
taper off after midnight tonight. Dry, cool, and sunny weather is
expected Monday and Tuesday. More clouds are expected Wednesday,
but dry weather is expected to continue through the workweek.

&&

.DISCUSSION...The upper level trough is moving over the area this
afternoon. The main trough axis has just started to move onto the
north coast. This is bringing an increase in showers that will
continue into the evening. Snow levels are expected to drop to
around 1500 feet. The heavier showers may briefly bring some snow
flakes as low as 1,000 feet, but accumulation is not expected.
Winds will be breezy across the area this evening and these will
start to diminish tonight. Winds are expected to remain elevated
enough tonight to keep much fog from forming in the valleys or at
the coast. Temperatures will drop into the mid 30s at the coast
and the upper 20s in the protected interior valleys. The wind may
keep temperatures from really bottoming out, but they could drop
lower if winds die briefly.

Monday is expected to be a cool, dry, and breezy day across the
area. Monday night is expected to be the coldest, although the
lighter winds may allow fog to form in some of the northern
valleys. This would keep them warmer. Confidence is low on the
exact locations the fog will form. Offshore flow is expected to
keep the coast clear Monday night. Dry and sunny weather is
expected again Tuesday. A few clouds are expected Tuesday night
into Wednesday as a system moves by to the north. This may bring a
few sprinkles to Del Norte county, but even that is looking less
likely. It will likely keep temperatures from getting as cold as
the previous nights. Warmer high temperatures are expected to
return for Thursday and Friday as high pressure continues to build
into the area. There may be some coastal stratus as the warm air
builds in and the inversion strengthens. Saturday models are
hinting at another weather system and some light rain, but
confidence is still low on this. MKK

&&

.AVIATION...Gusty winds and isolated showers were observed for
CEC and ACV in the wake of the cold front, with periods of low VFR
or MVFR CIGs and VSBY. UKI held gusty NW winds. Small hail was
observed and reported with the low freezing levels. Effective
mixing with the relatively unstable environment through the
afternoon and increased pressure gradient with the digging trough
into the evening will maintain the gusty winds. The trough will
enhance showers and lower CIGS with MVFR opportunity again for
CEC and ACV overnight, followed by a brief slight interlude in
gusty winds late tonight. The pressure gradient tightens more
robustly again from the upstream building ridge through tomorrow
afternoon and winds will increase again.

JJW

&&

.MARINE...Northerlies will increase late today across the waters
as the pressure gradient tightens with the trough moving farther
inland. Winds are expected to mainly remain below Gale Force in
strength, though some isolated gusts in the southern waters will
reach criteria. Gale Force gusts ramp up mid-morning on Monday
over the southern outer waters, so the Gale Warning was pushed
back to reflect this change. Some gusts around Gale Force will be
possible in the southern inner and northern outer waters, but
overall coverage and consistency should be lacking to warrant
expanding the Gale Warnings to these zones. Given the increasing
winds, steep, short-period seas will develop in all zones as a
result of the increasing winds. These short-period seas will aid
in a chaotic sea state with a a couple of west to northwest
currently impacting the coastal waters of Northwest California.
Portions of the waters will experience Hazardous Seas Warnings, so
opted to issue warnings for the southern waters. That being said,
the sea state will be chaotic across the northern waters as well
given the combination of the swells and short-period seas. The sea
will start to improve on Tuesday, though another west to
northwest swell is expected to move through the waters Tuesday
night and into Wednesday. In addition, isolated thunderstorms will
be possible today through the afternoon hours over the waters
mainly north of Cape Mendocino. Gusty, erratic winds and small
hail will accompany any storms.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory until 6 PM PST this evening for CAZ109>113.

NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 3 AM PST Tuesday for PZZ450-455-470.

     Small Craft Advisory until 9 AM PST Monday for PZZ475.

     Gale Warning from 9 AM Monday to 3 AM PST Tuesday for PZZ475.

&&

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https://www.facebook.com/NWSEureka
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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png
Hazardous weather outlook, Feb 2, 3:35 AM PST, 11 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Eureka CA
335 AM PST Sun Feb 2 2020

CAZ102-105>108-031145-
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-Northern Trinity-Southern Trinity-
335 AM PST Sun Feb 2 2020

This hazardous weather outlook is for northwest California.

.DAY ONE...Today and tonight.

Snow levels are forecast to fall to around 1500 feet this afternoon.
Snow accumulations will generally be under two inches at highway
pass levels.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

CAZ109>113-031145-
Mendocino Coast-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Southwestern Mendocino Interior-
Southeastern Mendocino Interior-
335 AM PST Sun Feb 2 2020

...WIND ADVISORY IN EFFECT UNTIL 6 PM PST THIS EVENING...

This hazardous weather outlook is for northwest California.

.DAY ONE...Today and tonight.

A Wind Advisory is in effect through early this evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

CAZ101-103-104-031145-
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
335 AM PST Sun Feb 2 2020

This hazardous weather outlook is for northwest California.

.DAY ONE...Today and tonight.

A slight chance of thunderstorms and small hail will exist along the
Del Norte and Humboldt coast through this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.

In the hours before

Local storm report, Feb 2, 12:08 PM PST, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
1208 PM PST SUN FEB 2 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1155 AM     HAIL             FIELDBROOK              40.97N 124.04W
02/02/2020  E0.25 INCH       HUMBOLDT           CA   NWS EMPLOYEE

            RICE TO PEA SIZED HAIL FELL FOR AROUND 5MIN.
            SOME ACCUMULATION ON THE GROUND.

&&

JJW
Local storm report, Feb 2, 1:46 PM PST, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
146 PM PST SUN FEB 2 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 AM     HAIL             TRINIDAD                41.06N 124.14W
02/02/2020  E0.25 INCH       HUMBOLDT           CA   COCORAHS

            RICE SIZED HAIL REPORTED FOR 6 MINUTES.
            ACCUMULATED ON CAR WINDSHIELD.

&&

MKK
Local storm report, Feb 2, 2:29 PM PST, 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
229 PM PST SUN FEB 2 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     HAIL             CUTTEN                  40.78N 124.14W
02/02/2020  E0.25 INCH       HUMBOLDT           CA   PUBLIC

            SOCIAL MEDIA REPORT OF PEA SIZE HAIL AROUND
            2:15 PM, LASTED FOR UNDER 2 MINUTES.

&&

JAW
Local storm report, Feb 2, 2:33 PM PST, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
233 PM PST SUN FEB 2 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0213 PM     HAIL             1 NE FAIRHAVEN          40.79N 124.18W
02/02/2020  E0.25 INCH       HUMBOLDT           CA   PUBLIC

            SOCIAL MEDIA REPORT FOR SMALL HAIL LASTING A
            MINUTE OR TWO.

&&

JAW

Nearby

Hazardous Seas Warnings in California, 2020Every hazardous seas warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.