Alert archive / California / Hazardous Seas Warnings in 2015

Hazardous Seas Warning 13, NWS Eureka, CA

April 23, 2015

NWS Eureka, CA issued this hazardous seas warning at Apr 23, 2015, 11:09 AM PDT. It was in force for 4 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 23, 2015, 11:09 AM PDT (18:09 UTC)
Expired
Apr 23, 2015, 3:00 PM PDT
In force
4 hr
Issued by
NWS Eureka, CA

The text

As transmitted, in the capitals the NWS used until 2016.

956 
WHUS76 KEKA 231809
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
1109 AM PDT THU APR 23 2015

PZZ450-470-232200-
/O.EXP.KEKA.SE.W.0012.000000T0000Z-150423T1800Z/
/O.NEW.KEKA.SE.W.0013.150423T1809Z-150423T2200Z/
/O.CON.KEKA.SC.Y.0138.000000T0000Z-150423T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
1109 AM PDT THU APR 23 2015

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 3 PM PDT THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HAZARDOUS
SEAS WARNING...WHICH IS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON. 

* WINDS...N 10 TO 20 KT TODAY...DECREASING TONIGHT.

* SEAS...STEEP NW 10 TO 11 FT AT 9 SECONDS...SUBSIDING TONIGHT.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE
IMMINENT OR OCCURRING. RECREATIONAL BOATERS SHOULD REMAIN IN
PORT...OR TAKE SHELTER UNTIL WAVES SUBSIDE.  COMMERCIAL VESSELS
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ475-232200-
/O.CON.KEKA.GL.W.0012.000000T0000Z-150423T2200Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
1109 AM PDT THU APR 23 2015

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

* WINDS...NW 25 TO 35 KT WITH GUSTS TO 40 KT TODAY...DECREASING 
  TONIGHT. 

* SEAS...STEEP NW 12 TO 15 FT AT 10 SECONDS TODAY...SUBSIDING 
  TONIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

$$

PZZ455-240215-
/O.CON.KEKA.SE.W.0012.000000T0000Z-150423T2200Z/
/O.CON.KEKA.SC.Y.0138.000000T0000Z-150424T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
1109 AM PDT THU APR 23 2015

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY...

* WINDS...NW 20 TO 25 KT TODAY WITH GUSTS NEAR 35 KT...
  DECREASING THIS EVENING. 

* SEAS...NW 11 FT AT 10 SECONDS...SUBSIDING TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE
IMMINENT OR OCCURRING. RECREATIONAL BOATERS SHOULD REMAIN IN
PORT...OR TAKE SHELTER UNTIL WAVES SUBSIDE.  COMMERCIAL VESSELS
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

$$
1 follow-up statement
011 
WHUS76 KEKA 232204
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
304 PM PDT THU APR 23 2015

PZZ475-240615-
/O.EXP.KEKA.GL.W.0012.000000T0000Z-150423T2200Z/
/O.EXA.KEKA.SC.Y.0138.000000T0000Z-150424T1600Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
304 PM PDT THU APR 23 2015

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PDT FRIDAY...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM PDT FRIDAY. 

* WINDS...NW 15 TO 25 KT TONIGHT WITH GUSTS NEAR 35
  KT...DECREASING TO NW 10 TO 20 KT BY FRIDAY.

* SEAS...NW 9 FT AT 11 SECONDS...BECOMING 9 FT AT 15 SECONDS ON
  FRIDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ450-470-232315-
/O.EXP.KEKA.SE.W.0013.000000T0000Z-150423T2200Z/
/O.EXP.KEKA.SC.Y.0138.000000T0000Z-150423T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
304 PM PDT THU APR 23 2015

...HAZARDOUS SEAS WARNING HAS EXPIRED...
...SMALL CRAFT ADVISORY HAS EXPIRED...


$$

PZZ455-240615-
/O.EXP.KEKA.SE.W.0012.000000T0000Z-150423T2200Z/
/O.CON.KEKA.SC.Y.0138.000000T0000Z-150424T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
304 PM PDT THU APR 23 2015

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT FRIDAY...
...HAZARDOUS SEAS WARNING HAS EXPIRED...

* WINDS...NW 15 TO 25 KT TONIGHT WITH GUSTS NEAR 35 KT...
  DECREASING TO 10 TO 20 KT BY FRIDAY. 

* SEAS...NW 9 FT AT 11 SECONDS...BECOMING 9 FT AT 14 SECONDS ON
  FRIDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 3:14 AM PDTSmall Craft AdvisoryEKA30 hr
Apr 23, 3:14 AM PDTHazardous Seas WarningEKA12 hr

Nearby

Hazardous Seas Warnings in California, 2015Every hazardous seas warning in 2015

Sources

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