Alert archive / California / Hazardous Seas Warnings in 2016

Hazardous Seas Warning 21, NWS Eureka, CA

August 16, 2016

NWS Eureka, CA issued this hazardous seas warning at Aug 16, 2016, 2:06 PM PDT. It took effect at Aug 17, 2016, 5:00 PM PDT. It was in force for 16 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
Aug 16, 2016, 2:06 PM PDT (21:06 UTC)
In effect from
Aug 17, 2016, 5:00 PM PDT
Expired
Aug 18, 2016, 9:00 AM PDT
In force
16 hr
Issued by
NWS Eureka, CA

The text

As transmitted.

069 
WHUS76 KEKA 162106
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
206 PM PDT TUE AUG 16 2016

PZZ450-170515-
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-160818T0000Z/
/O.NEW.KEKA.SE.W.0021.160818T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
206 PM PDT TUE AUG 16 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM PDT WEDNESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 5 PM WEDNESDAY TO 3 AM
PDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HAZARDOUS
SEAS WARNING...WHICH IS IN EFFECT FROM 5 PM WEDNESDAY TO 3 AM PDT
THURSDAY. 

* WINDS...OCCASIONAL GUSTS TO AROUND 35 KT NEAR POINT SAINT GEORGE EACH
  AFTERNOON AND EVENING THROUGH WEDNESDAY NIGHT.

* WAVES/SEAS...NW 9 TO 11 FT AROUND 9 SECONDS TONIGHT. STEEP SEAS
  EXPECTED TO BUILD TO 12 TO 14 FT WEDNESDAY INTO WEDNESDAY NIGHT.

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.

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.

&&

$$

PZZ470-475-170515-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
206 PM PDT TUE AUG 16 2016

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

* WINDS...OCCASIONAL GUSTS OF 35 TO 45 KT THROUGH WEDNESDAY
  NIGHT...STRONGEST NORTH OF CAPE MENDOCNO.

* WAVES/SEAS...N 13 TO 15 FT AROUND 9 SECONDS TONIGHT. STEEP SEAS
  WILL BUILD TO AROUND 15 TO 17 FT WED AND WED NIGHT.

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.

&&

$$

PZZ455-170515-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1000Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
206 PM PDT TUE AUG 16 2016

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

* WINDS...OCCASIONAL GUSTS TO AROUND 35 KT NEAR CAPE MENDOCINO
  EACH AFTERNOON AND EVENING THROUGH WEDNESDAY NIGHT.

* WAVES/SEAS...NW 8 TO 10 FT AROUND 9 SECONDS EXCEPT 14 FT AROUND
  CAPE MENDOCINO THROUGH WEDNESDAY NIGHT.

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.

&&

$$
7 follow-up statements
932 
WHUS76 KEKA 170345
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
845 PM PDT TUE AUG 16 2016

PZZ470-475-171145-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
845 PM PDT TUE AUG 16 2016

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

* WINDS...OCCASIONAL GUSTS OF 35 TO 45 KT THROUGH WEDNESDAY
  NIGHT...STRONGEST NORTH OF CAPE MENDOCINO.

* WAVES/SEAS...N 13 TO 15 FT AROUND 9 SECONDS TONIGHT. STEEP SEAS
  WILL BUILD TO AROUND 15 TO 17 FT WEDNESDAY AND WEDNESDAY NIGHT.

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.

&&

$$

PZZ450-171145-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T0000Z/
/O.CON.KEKA.SE.W.0021.160818T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
845 PM PDT TUE AUG 16 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT
WEDNESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM WEDNESDAY
TO 3 AM PDT THURSDAY...

* WINDS...OCCASIONAL GUSTS TO AROUND 35 KT NEAR POINT SAINT 
  GEORGE EACH AFTERNOON AND EVENING THROUGH WEDNESDAY NIGHT. 

* WAVES/SEAS...NW 9 TO 11 FT AROUND 9 SECONDS TONIGHT. STEEP 
  SEAS EXPECTED TO BUILD TO 12 TO 14 FT WEDNESDAY INTO WEDNESDAY 
  NIGHT. 

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.

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.

&&

$$

PZZ455-171145-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1000Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
845 PM PDT TUE AUG 16 2016

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

* WINDS...OCCASIONAL GUSTS TO AROUND 35 KT NEAR CAPE MENDOCINO 
  EACH AFTERNOON AND EVENING THROUGH WEDNESDAY NIGHT. 

* WAVES/SEAS...NW 8 TO 10 FT AROUND 9 SECONDS EXCEPT 14 FT 
  AROUND CAPE MENDOCINO THROUGH WEDNESDAY NIGHT. 

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.

&&

$$
454 
WHUS76 KEKA 170926
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
226 AM PDT WED AUG 17 2016

PZZ470-475-171730-
/O.EXT.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
226 AM PDT WED AUG 17 2016

...GALE WARNING NOW IN EFFECT UNTIL 9 AM PDT THURSDAY...

* WINDS...OCCASIONAL GUSTS OF 35 TO 45 KT THROUGH THURSDAY
  MORNING...STRONGEST NORTH OF CAPE MENDOCINO. WIND GUSTS WILL
  DROP BELOW 35 KT DURING THE DAY ON THURSDAY.

* WAVES/SEAS...N 13 TO 17 FT AROUND 9 TO 10 SECONDS THROUGH
  WEDNESDAY EVENING...SEAS WILL THEN SUBSIDE TO 10 TO 12 FT ON
  THURSDAY.

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.

&&

$$

PZZ450-171730-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T0000Z/
/O.CON.KEKA.SE.W.0021.160818T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
226 AM PDT WED AUG 17 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 3 AM PDT THURSDAY...

* WINDS...OCCASIONAL GUSTS OF 35 TO 45 KT NEAR POINT SAINT GEORGE
  THIS AFTERNOON AND EARLY EVENING. WIND GUSTS WILL SUBSIDE IN THE
  LATE EVENING.

* WAVES/SEAS...NW 9 TO 11 FT AROUND 9 SECONDS BUILDING TO 12 TO 14
  FT DURING THE DAY TODAY. STEEP SEAS WILL SUBSIDE EARLY THURSDAY
  MORNING.

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.

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.

&&

$$

PZZ455-171730-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1000Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
226 AM PDT WED AUG 17 2016

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

* WINDS...OCCASIONAL GUSTS TO AROUND 35 KT NEAR CAPE MENDOCINO THROUGH
  WEDNESDAY NIGHT.

* WAVES/SEAS...NW 8 TO 10 FT AROUND 9 SECONDS EXCEPT 11 TO 13 FT
  AROUND CAPE MENDOCINO THROUGH WEDNESDAY NIGHT.

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.

&&

$$
305 
WHUS76 KEKA 171544
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
844 AM PDT WED AUG 17 2016

PZZ470-475-172345-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
844 AM PDT WED AUG 17 2016

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THURSDAY...

* WINDS...OCCASIONAL GUSTS OF 35 TO 45 KT THROUGH
  TONIGHT...STRONGEST WINDS WILL BE NORTH OF CAPE MENDOCINO.
  WINDS WILL DIMINISH ON THURSDAY.

* WAVES/SEAS...N TO NW 14 TO 16 FT AROUND 10 TO 11 SECONDS
  THROUGH TONIGHT. SEAS WILL SUBSIDE TO 10 TO 12 FT ON THURSDAY.

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.

&&

$$

PZZ450-172345-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T0000Z/
/O.CON.KEKA.SE.W.0021.160818T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
844 AM PDT WED AUG 17 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 3 AM PDT THURSDAY...

* WINDS...N 10 TO 20 KT WITH GUSTS UP TO 35 KT NEAR POINT SAINT
  GEORGE THROUGH THIS EVENING. WINDS WILL DIMINISH TONIGHT AND
  THURSDAY.

* WAVES/SEAS...NW 10 TO 13 FT AT 10 TO 11 SECONDS. STEEP SEAS WILL
  SUBSIDE THURSDAY MORNING.

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.

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.

&&

$$

PZZ455-172345-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1000Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
844 AM PDT WED AUG 17 2016

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

* WINDS...NW 10 TO 20 KT WITH GUSTS UP TO 35 KT NEAR CAPE
  MENDOCINO THROUGH TONIGHT.

* WAVES/SEAS...NW 9 TO 10 FT AT 11 TO 12 SECONDS THROUGH TONIGHT.

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.

&&

$$
757 
WHUS76 KEKA 172134
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
234 PM PDT WED AUG 17 2016

PZZ470-475-180545-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
234 PM PDT WED AUG 17 2016

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THURSDAY...

* WINDS...N 20 TO 30 KT OCCASIONAL GUSTS UP TO 35 TO 45 KT
  THROUGH TONIGHT... STRONGEST WINDS WILL BE NORTH OF CAPE
  MENDOCINO. WINDS WILL DIMINISH ON THURSDAY.

* WAVES/SEAS...N TO NW 14 TO 16 FT AROUND 10 TO 11 SECONDS THROUGH
  TONIGHT. SEAS WILL SUBSIDE TO 10 TO 12 FT AT 10 SECONDS ON
  THURSDAY.

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.

&&

$$

PZZ450-180545-
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
/O.CON.KEKA.SE.W.0021.160818T0000Z-160818T1000Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
234 PM PDT WED AUG 17 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT THURSDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...

* WINDS...N 10 TO 20 KT WITH GUSTS UP TO 30 KT NEAR POINT SAINT
  GEORGE THROUGH THIS EVENING. WINDS WILL DIMINISH TONIGHT AND
  THURSDAY.

* WAVES/SEAS...NW 10 TO 12 FT AT 9 TO 10 SECONDS. STEEP SEAS WILL
  SUBSIDE THURSDAY MORNING.

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.

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.

&&

$$

PZZ455-180545-
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
234 PM PDT WED AUG 17 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT THURSDAY...

* WINDS...NW 10 TO 20 KT WITH GUSTS UP TO 30 KT NEAR CAPE
  MENDOCINO THROUGH TONIGHT.

* WAVES/SEAS...NW 9 TO 10 FT AT 10 TO 11 SECONDS THROUGH TONIGHT.

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.

&&

$$
252 
WHUS76 KEKA 180402
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
902 PM PDT WED AUG 17 2016

PZZ470-475-181215-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
902 PM PDT WED AUG 17 2016

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM THURSDAY...

* WINDS...N 20 TO 30 KT WITH GUSTS TO 45 KT THROUGH TONIGHT.
  STRONGEST WINDS WILL BE NEAR CAPE MENDOCINO. WINDS WILL
  DIMINISH ON THURSDAY.

* WAVES/SEAS...N TO NW 14 TO 16 FT AT 10 TO 11 SECONDS THROUGH
  TONIGHT. SEAS WILL SUBSIDE TO 10 TO 12 FT ON THURSDAY.

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.

$$

PZZ450-181215-
/O.CON.KEKA.SE.W.0021.000000T0000Z-160818T1000Z/
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
902 PM PDT WED AUG 17 2016

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 AM THURSDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM THURSDAY...

* WINDS...N 10 TO 20 KT WITH GUSTS TO 30 KT THROUGH THIS EVENING.
  HIGHEST GUSTS NEAR PT ST GEORGE. WINDS WILL DIMINISH LATER
  TONIGHT AND THURSDAY.

* WAVES/SEAS...NW 10 TO 12 FT AT 9 TO 10 SECONDS. STEEP SEAS 
  WILL SUBSIDE THURSDAY MORNING. 

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.

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.

$$

PZZ455-181215-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
902 PM PDT WED AUG 17 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM THURSDAY...

* WINDS...NW 10 TO 20 KT WITH GUSTS TO 30 KT THROUGH TONIGHT.
  HIGHEST GUSTS NEAR CAPE MENDOCINO.

* WAVES/SEAS...NW 9 TO 10 FT AT 10 TO 11 SECONDS THROUGH TONIGHT.

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.

$$
729 
WHUS76 KEKA 180954
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
254 AM PDT THU AUG 18 2016

PZZ450-181600-
/O.EXT.KEKA.SE.W.0021.000000T0000Z-160818T1600Z/
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
254 AM PDT THU AUG 18 2016

...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 9 AM PDT THIS
MORNING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS
MORNING...

* WINDS...N GUSTS TO 25 KT THROUGH EARLY THIS MORNING. HIGHEST
  GUSTS NEAR PT ST GEORGE AND CAPE MENDOCINO. WINDS WILL DIMINISH
  FURTHER IN THE LATE MORNING AND THIS AFTERNOON.

* WAVES/SEAS...NW 10 TO 12 FT AT 9 TO 10 SECONDS. STEEP SEAS WILL
  SUBSIDE THIS MORNING...TO AROUND 7 FT BY THIS EVENING.

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.

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.

$$

PZZ470-475-181600-
/O.CON.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
254 AM PDT THU AUG 18 2016

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING...

* WINDS...N 20 TO 30 KT WITH GUSTS TO 40 KT THROUGH EARLY THIS
  MORNING. STRONGEST WINDS WILL BE NEAR CAPE MENDOCINO. WINDS WILL
  DIMINISH IN THE LATE MORNING AND AFTERNOON...TO AROUND 10 TO 20
  KT BY THIS EVENING.

* WAVES/SEAS...N TO NW 10 TO 14 FT AT AROUND 9 SECONDS THROUGH
  EARLY THIS MORNING. SEAS WILL SUBSIDE TO 8 TO 10 FT BY THIS
  AFTERNOON...THEN TO 7 FT 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.

$$

PZZ455-181600-
/O.CON.KEKA.SC.Y.0077.000000T0000Z-160818T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
254 AM PDT THU AUG 18 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS
MORNING...

* WINDS...NW TO 15 KT WITH GUSTS TO 25 KT THROUGH EARLY THIS
  MORNING. HIGHEST GUSTS NEAR CAPE MENDOCINO. WINDS WILL DIMINISH
  THIS MORNING.

* WAVES/SEAS...NW 7 TO 9 FT AT 10 SECONDS...THEN SUBSIDING THROUGH
  THE DAY.

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.

$$
022 
WHUS76 KEKA 181549
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
849 AM PDT THU AUG 18 2016

PZZ470-475-182200-
/O.EXP.KEKA.GL.W.0047.000000T0000Z-160818T1600Z/
/O.EXB.KEKA.SC.Y.0077.160818T1600Z-160818T2200Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
849 AM PDT THU AUG 18 2016

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON. 

* WINDS...NW 15 TO 25 KT WITH HIGHER GUSTS NEAR CAPE MENDOCINO.
  WINDS WILL DIMINISH THE NEXT FEW DAYS.

* WAVES/SEAS...N TO NW AROUND 10 FT AT 9 SECONDS...SEAS WILL
  CONTINUE SUBSIDING THE NEXT FEW DAYS.

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.

&&

$$

PZZ450-182200-
/O.EXP.KEKA.SE.W.0021.000000T0000Z-160818T1600Z/
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-160818T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
849 AM PDT THU AUG 18 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PDT THIS
AFTERNOON...

* WINDS...NW 5 TO 10 KT.

* WAVES/SEAS...NW AROUND 8 FT AT 9 SECONDS. SEAS WILL CONTINUE
  SUBSIDING THE NEXT FEW DAYS.

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.

&&

$$

PZZ455-182200-
/O.EXT.KEKA.SC.Y.0077.000000T0000Z-160818T2200Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
849 AM PDT THU AUG 18 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PDT THIS
AFTERNOON...

* WINDS...NW TO W 5 TO 10 KT. 

* WAVES/SEAS...NW AROUND 8 FT AT 9 SECONDS. SEAS WILL CONTINUE
  SUBSIDING THE NEXT FEW DAYS.


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
Aug 16, 3:35 AM PDTFire Weather WatchEKA7 hr
Aug 16, 10:25 AM PDTRed Flag WarningEKA23 hr

Nearby

Hazardous Seas Warnings in California, 2016Every hazardous seas warning in 2016

Sources

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