Alert archive / California / Small Craft Advisories in 2012

Small Craft Advisory 103, NWS Eureka, CA

December 30, 2012

NWS Eureka, CA issued this small craft advisory at Dec 30, 2012, 2:50 PM PST. It took effect at Dec 31, 2012, 3:00 AM PST. It was in force for 42 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 2012, 2:50 PM PST (22:50 UTC)
In effect from
Dec 31, 2012, 3:00 AM PST
Expired
Jan 1, 2013, 9:00 PM PST
In force
42 hr
Issued by
NWS Eureka, CA

The text

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

065 
WHUS76 KEKA 302250
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
250 PM PST SUN DEC 30 2012

...LONG PERIOD WAVES ARRIVE OVERNIGHT AND BUILD ON MONDAY...

A LARGE HURRICANE FORCE LOW THAT PASSED THROUGH THE CENTRAL
PACIFIC THEN UP INTO SOUTHERN ALASKA HAS GENERATED SIGNIFICANT
WAVES THAT WILL BEGIN TO ARRIVE ON THE NORTHWEST CALIFORNIA COAST
TONIGHT. THE FORERUNNERS WILL BE VERY LONG PERIOD AND LOW
AMPLITUDE...FOLLOWED BY BUILDING HEIGHT AND SUBSIDING PERIODS.
BEHIND THIS WAVE SYSTEM...ANOTHER LARGE WAVE GROUP WILL IMPACT THE
WATERS DURING THE SECOND HALF OF THE WEEK.

PZZ455-475-310700-
/O.CAN.KEKA.SC.Y.0102.000000T0000Z-121230T2300Z/
/O.NEW.KEKA.SC.Y.0103.121231T1700Z-130102T1100Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
250 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM MONDAY TO 3 AM
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 9 AM MONDAY TO 3 AM WEDNESDAY.

* WINDS...TONIGHT THROUGH MONDAY NORTHWEST TO NORTH 10 TO 20 KT
  THEN DIMINISHING ON TUESDAY.

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT. LOCAL
  NORTHERLY WINDS WILL GENERATE SHORT PERIOD WAVE OF 2 TO 4 FT AT
  5 SECONDS THROUGH MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR STEEP
ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ470-310700-
/O.NEW.KEKA.SC.Y.0103.121231T1100Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
250 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM MONDAY TO 9 PM
TUESDAY... 

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 3 AM MONDAY TO 9 PM TUESDAY.

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR STEEP
ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ450-310700-
/O.NEW.KEKA.SC.Y.0103.121231T1700Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
250 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM MONDAY TO 9 PM
TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 9 AM MONDAY TO 9 PM TUESDAY.

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL
  REACH UP TO 10 TO 12 FEET AT 16 SECONDS BY MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR STEEP
ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA
5 follow-up statements
274 
WHUS76 KEKA 310449
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
849 PM PST SUN DEC 30 2012

...LONG PERIOD WAVES ARRIVE OVERNIGHT AND BUILD ON MONDAY...

A LARGE HURRICANE FORCE LOW THAT PASSED THROUGH THE CENTRAL
PACIFIC THEN UP INTO SOUTHERN ALASKA HAS GENERATED SIGNIFICANT
WAVES THAT WILL BEGIN TO ARRIVE ON THE NORTHWEST CALIFORNIA COAST
TONIGHT. THE FORERUNNERS WILL BE VERY LONG PERIOD AND LOW
AMPLITUDE...FOLLOWED BY BUILDING HEIGHT AND SUBSIDING PERIODS.
BEHIND THIS WAVE SYSTEM...ANOTHER LARGE WAVE GROUP WILL IMPACT
THE WATERS DURING THE SECOND HALF OF THE WEEK.

PZZ470-311300-
/O.CON.KEKA.SC.Y.0103.121231T1100Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
849 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO
9 PM PST TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO 9 PM
PST TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ450-311300-
/O.CON.KEKA.SC.Y.0103.121231T1700Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
849 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO
9 PM PST TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO 9 PM
PST TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 10 TO 12 FEET AT 16 SECONDS BY MONDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ455-475-311300-
/O.CON.KEKA.SC.Y.0103.121231T1700Z-130102T1100Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
849 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO
3 AM PST WEDNESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO 3 AM
PST WEDNESDAY. 

* WINDS...TONIGHT THROUGH MONDAY NORTHWEST TO NORTH 10 TO 20 KT 
  THEN DIMINISHING ON TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT. LOCAL 
  NORTHERLY WINDS WILL GENERATE SHORT PERIOD WAVE OF 2 TO 4 FT 
  AT 5 SECONDS THROUGH MONDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA
307 
WHUS76 KEKA 310605 CCA
MWWEKA

URGENT - MARINE WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE EUREKA CA
1005 PM PST SUN DEC 30 2012

...LONG PERIOD WAVES ARRIVE OVERNIGHT AND BUILD ON MONDAY...

A LARGE HURRICANE FORCE LOW THAT PASSED THROUGH THE CENTRAL
PACIFIC THEN UP INTO SOUTHERN ALASKA HAS GENERATED SIGNIFICANT
WAVES THAT WILL BEGIN TO ARRIVE ON THE NORTHWEST CALIFORNIA COAST
TONIGHT. THE FORERUNNERS WILL BE VERY LONG PERIOD AND LOW
AMPLITUDE...FOLLOWED BY BUILDING HEIGHT AND SUBSIDING PERIODS.
BEHIND THIS WAVE SYSTEM...ANOTHER LARGE WAVE GROUP WILL IMPACT
THE WATERS DURING THE SECOND HALF OF THE WEEK.

PZZ470-311430-
/O.CON.KEKA.SC.Y.0103.121231T1100Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
1005 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO
9 PM PST TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO 9 PM
PST TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ450-311430-
/O.CON.KEKA.SC.Y.0103.121231T1700Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
1005 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO
9 PM PST TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO 9 PM
PST TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 10 TO 12 FEET AT 16 SECONDS BY MONDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ455-475-311430-
/O.COR.KEKA.SC.Y.0103.121231T1700Z-130102T1100Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
1005 PM PST SUN DEC 30 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO
3 AM PST WEDNESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM MONDAY TO 3 AM
PST WEDNESDAY. 

* WINDS...TONIGHT THROUGH MONDAY NORTHWEST TO NORTH 10 TO 20 KT 
  THEN DIMINISHING ON TUESDAY. 

* SEAS...LONG PERIOD WEST NORTHWEST WAVES WILL BEGIN TO BUILD 
  OVERNIGHT THEN BUILD RAPIDLY IN HEIGHT ON MONDAY. HEIGHTS WILL 
  REACH UP TO 11 TO 13 FEET AT 16 SECONDS BY MONDAY NIGHT. LOCAL 
  NORTHERLY WINDS WILL GENERATE SHORT PERIOD WAVES OF 2 TO 4 FT 
  AT 5 SECONDS THROUGH MONDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA
419 
WHUS76 KEKA 311045
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
245 AM PST MON DEC 31 2012


PZZ455-475-311845-
/O.EXT.KEKA.SC.Y.0103.121231T1700Z-130102T0500Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
245 AM PST MON DEC 31 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING TO
9 PM PST TUESDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM PST TUESDAY. 

* SEAS...WNW 3 TO 5 FT AT 18 TO 20 SECONDS WILL CONTINUE TO BUILD
  THIS MORNING...PEAK AROUND 11 TO 13 FT AT 16 SECONDS TONIGHT...THEN
  SUBSIDE THROUGH TUE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ470-311845-
/O.CON.KEKA.SC.Y.0103.121231T1100Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
245 AM PST MON DEC 31 2012

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PST TUESDAY. 

* SEAS...WNW 6 FT AT 18 TO 20 SECONDS WILL BUILD THIS MORNING...PEAK
  AROUND 11 TO 13 FT AT 16 TO 18 SECONDS TONIGHT...THEN SUBSIDE
  THROUGH TUE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ450-311845-
/O.CON.KEKA.SC.Y.0103.121231T1700Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
245 AM PST MON DEC 31 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM PST TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 PM PST TUESDAY. 

* SEAS...WNW 6 FT AT 18 TO 20 SECONDS WILL BUILD THIS MORNING...PEAK
  AROUND 10 TO 12 FT AT 16 TO 18 SECONDS TONIGHT...THEN SUBSIDE
  THROUGH TUE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA
770 
WHUS76 KEKA 311701
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
901 AM PST MON DEC 31 2012

PZZ450-455-475-010115-
/O.CON.KEKA.SC.Y.0103.000000T0000Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
901 AM PST MON DEC 31 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM TUESDAY...

* SEAS...LONG PERIOD WNW WAVES WILL CONTINUE TO BUILD THROUGH THE
  DAY...PEAKING AROUND 12 FEET AT 16 SECONDS. THESE WAVES WILL BE
  SLOW TO SUBSIDE THROUGH TUESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$

PZZ470-010115-
/O.CON.KEKA.SC.Y.0103.000000T0000Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
901 AM PST MON DEC 31 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM TUESDAY...

* SEAS...LONG PERIOD WNW WAVES WILL CONTINUE TO BUILD THROUGH THE
  DAY PEAKING AROUND 12 FEET AT 16 SECONDS. THESE WAVES WILL BE
  SLOW TO SUBSIDE THROUGH TUESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA
546 
WHUS76 KEKA 312255
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
255 PM PST MON DEC 31 2012

PZZ450-455-470-475-010700-
/O.CON.KEKA.SC.Y.0103.000000T0000Z-130102T0500Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
255 PM PST MON DEC 31 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM TUESDAY...

* SEAS...LONG PERIOD WNW WAVES WILL CONTINUE TO BUILD OVERNIGHT
  PEAKING AROUND 12 FEET AT 16 SECONDS OVERNIGHT. THESE WAVES
  WILL BE SLOW TO SUBSIDE THROUGH TUESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WAVES WILL BE LARGE AND/OR
STEEP ENOUGH TO CREATE A POTENTIAL HAZARD TO SMALL CRAFT.

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 30, 2:59 PM PSTFreeze WarningEKA17 hr

Nearby

Small Craft Advisories in California, 2012Every small craft advisory in 2012

Sources

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