Alert archive / California / Small Craft Advisories in 2010

Small Craft Advisory 64, NWS Eureka, CA

August 21, 2010

NWS Eureka, CA issued this small craft advisory at Aug 21, 2010, 2:51 AM PDT. It took effect at Aug 22, 2010, 3:10 AM PDT. It was in force for 60 hr.

The area

The counties it named.

The facts

Issued
Aug 21, 2010, 2:51 AM PDT (09:51 UTC)
In effect from
Aug 22, 2010, 3:10 AM PDT
Expired
Aug 24, 2010, 3:00 PM PDT
In force
60 hr
Issued by
NWS Eureka, CA

The text

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

763 
WHUS76 KEKA 210951
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
251 AM PDT SAT AUG 21 2010

PZZ475-212230-
/O.CAN.KEKA.SC.Y.0063.000000T0000Z-100821T1300Z/
/O.NEW.KEKA.SC.Y.0064.100822T0100Z-100824T1600Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
251 AM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
PDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 9 AM PDT
TUESDAY.

THE SURFACE PRESSURE GRADIENT WILL TIGHTEN THIS EVENING...CAUSING
WINDS AND SEAS TO INCREASE THROUGH MONDAY. WINDS AND SEAS WILL
DECREASE ON TUESDAY AS THE SURFACE PRESSURE GRADIENT WEAKENS.

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.

&&

$$

PZZ470-211100-
/O.CAN.KEKA.SC.Y.0063.000000T0000Z-100821T1300Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
251 AM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE SMALL
CRAFT ADVISORY. 

WINDS AND SEAS HAVE FALLEN BELOW ADVISORY CRITERIA.

$$
10 follow-up statements
224 
WHUS76 KEKA 212102
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
202 PM PDT SAT AUG 21 2010

PZZ470-220515-
/O.EXB.KEKA.SC.Y.0064.100823T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
202 PM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM SUNDAY TO 9 AM PDT
TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 5 PM SUNDAY TO 9 AM PDT
TUESDAY. 

THE SURFACE PRESSURE GRADIENT WILL TIGHTEN THIS EVENING...CAUSING
WINDS AND SEAS TO INCREASE THROUGH MONDAY. WINDS AND SEAS WILL
DECREASE ON TUESDAY AS THE SURFACE PRESSURE GRADIENT WEAKENS.

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.

&&

$$

PZZ475-220515-
/O.EXT.KEKA.SC.Y.0064.100822T1800Z-100824T1600Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
202 PM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 11 AM SUNDAY TO 9 AM
PDT TUESDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 11 AM SUNDAY TO
9 AM PDT TUESDAY. 

THE SURFACE PRESSURE GRADIENT WILL TIGHTEN THIS EVENING...CAUSING
WINDS AND SEAS TO INCREASE THROUGH MONDAY. WINDS AND SEAS WILL
DECREASE ON TUESDAY AS THE SURFACE PRESSURE GRADIENT WEAKENS.

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.

&&

$$
321 
WHUS76 KEKA 220345
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
845 PM PDT SAT AUG 21 2010

PZZ475-221145-
/O.CON.KEKA.SC.Y.0064.100822T1800Z-100824T1600Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
845 PM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO
9 AM PDT TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO
9 AM PDT TUESDAY. 

THE SURFACE PRESSURE GRADIENT WILL TIGHTEN THIS EVENING...CAUSING
WINDS AND SEAS TO INCREASE THROUGH MONDAY NIGHT. WINDS AND SEAS
WILL DECREASE ON TUESDAY AS THE SURFACE PRESSURE GRADIENT WEAKENS.

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.

&&

$$

PZZ470-221145-
/O.CON.KEKA.SC.Y.0064.100823T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
845 PM PDT SAT AUG 21 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM SUNDAY TO
9 AM PDT TUESDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM SUNDAY TO 9 AM
PDT TUESDAY. 

THE SURFACE PRESSURE GRADIENT WILL TIGHTEN THIS EVENING...CAUSING
WINDS AND SEAS TO INCREASE TO NEAR-GALE CONDITIONS THROUGH
MONDAY NIGHT. WINDS AND SEAS WILL DECREASE ON TUESDAY AS THE SURFACE
PRESSURE GRADIENT WEAKENS.

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.

&&

$$
956 
WHUS76 KEKA 221010
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
310 AM PDT SUN AUG 22 2010

PZZ455-222230-
/O.EXB.KEKA.SC.Y.0064.100822T1900Z-100824T0400Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
310 AM PDT SUN AUG 22 2010

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 9 PM PDT
MONDAY...

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

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE MONDAY NIGHT AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$

PZZ450-222230-
/O.EXB.KEKA.SC.Y.0064.100822T2200Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
310 AM PDT SUN AUG 22 2010

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
3 PM PDT TUESDAY...

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

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$

PZZ470-222230-
/O.EXT.KEKA.SC.Y.0064.100823T0000Z-100823T1900Z/
/O.NEW.KEKA.GL.A.0022.100823T1900Z-100824T0600Z/
/O.NEW.KEKA.SE.A.0021.100823T1900Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
310 AM PDT SUN AUG 22 2010

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO
NOON PDT MONDAY...
...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY
EVENING...
...HAZARDOUS SEAS WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A GALE WATCH...
WHICH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING.
A HAZARDOUS SEAS WATCH HAS ALSO BEEN ISSUED. THIS HAZARDOUS SEAS
WATCH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING.
THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 5 PM THIS
AFTERNOON TO NOON PDT MONDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TO NEAR GALE CONDITIONS MONDAY AFTERNOON THROUGH MONDAY
EVENING. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS OFFSHORE.

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 GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

A HAZARDOUS SEAS WATCH IS ISSUED WHEN THE RISK OF HAZARDOUS SEAS
HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING AND/OR
LOCATION IS STILL UNCERTAIN.  IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

PZZ475-222230-
/O.EXT.KEKA.SC.Y.0064.100822T1010Z-100824T2200Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
310 AM PDT SUN AUG 22 2010

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 3 PM PDT TUESDAY.

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE MODERATE NORTH
WINDS TO CONTINUE. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$
140 
WHUS76 KEKA 222131
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
231 PM PDT SUN AUG 22 2010

PZZ470-231100-
/O.CON.KEKA.SC.Y.0064.100823T0000Z-100823T1900Z/
/O.UPG.KEKA.GL.A.0022.100823T1900Z-100824T0600Z/
/O.NEW.KEKA.SE.W.0073.100823T1900Z-100824T1600Z/
/O.NEW.KEKA.GL.W.0124.100823T1900Z-100824T1200Z/
/O.UPG.KEKA.SE.A.0021.100823T1900Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
231 PM PDT SUN AUG 22 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PDT MONDAY...
...GALE WARNING IN EFFECT FROM NOON MONDAY TO 5 AM PDT TUESDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM NOON MONDAY TO 9 AM PDT
TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM NOON MONDAY TO 5 AM PDT
TUESDAY. A HAZARDOUS SEAS WARNING HAS ALSO BEEN ISSUED. THIS
HAZARDOUS SEAS WARNING IS IN EFFECT FROM NOON MONDAY TO 9 AM PDT
TUESDAY. THE HAZARDOUS SEAS WATCH IS NO LONGER IN EFFECT. THE
GALE WATCH IS NO LONGER IN EFFECT. A SMALL CRAFT ADVISORY REMAINS
IN EFFECT UNTIL NOON PDT MONDAY. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURING. 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.

A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE
IMMINENT OR OCCURING. 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.

&&

$$

PZZ455-231100-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T0400Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
231 PM PDT SUN AUG 22 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE MONDAY NIGHT AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$

PZZ475-231100-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
231 PM PDT SUN AUG 22 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE MODERATE NORTH
WINDS TO CONTINUE. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$

PZZ450-231100-
/O.CON.KEKA.SC.Y.0064.100822T2200Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
231 PM PDT SUN AUG 22 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$
900 
WHUS76 KEKA 231008
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
308 AM PDT MON AUG 23 2010

PZZ470-232230-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100823T1900Z/
/O.CON.KEKA.GL.W.0124.100823T1900Z-100824T1200Z/
/O.CON.KEKA.SE.W.0073.100823T1900Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
308 AM PDT MON AUG 23 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PDT TODAY...
...GALE WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 AM PDT
TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM NOON TODAY TO
9 AM PDT TUESDAY...

A GALE WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 AM PDT
TUESDAY. A HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM NOON
TODAY TO 9 AM PDT TUESDAY. A SMALL CRAFT ADVISORY REMAINS IN
EFFECT UNTIL NOON PDT TODAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE 20 TO 30 KT TODAY WITH GUSTS UP TO 40 KT. THE NORTH
WINDS WILL RESULT IN BUILDING WIND WAVES AND FRESH SWELL...WITH
WAVES REACHING HEIGHTS OF 10 TO 12 FT AT 8 SECONDS BY TONIGHT.
WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS OFFSHORE...BUT REMNANT
WAVES WILL CONTINUE THROUGH EARLY TUESDAY MORNING.

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.

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.

&&

$$

PZZ450-475-232230-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
308 AM PDT MON AUG 23 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$

PZZ455-232230-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T0400Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
308 AM PDT MON AUG 23 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TONIGHT AS THE HIGH SHIFTS
OFFSHORE.

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.

&&

$$
733 
WHUS76 KEKA 232225
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
325 PM PDT MON AUG 23 2010

PZZ470-240630-
/O.CON.KEKA.GL.W.0124.000000T0000Z-100824T1200Z/
/O.CON.KEKA.SE.W.0073.000000T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
325 PM PDT MON AUG 23 2010

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT
TUESDAY...

A GALE WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY. A
HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT TUESDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE 20 TO 30 KT TODAY WITH GUSTS UP TO 40 KT. THE NORTH
WINDS WILL RESULT IN BUILDING WIND WAVES AND FRESH SWELL...WITH
WAVES REACHING HEIGHTS OF 10 TO 12 FT AT 8 SECONDS BY TONIGHT.
WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS OFFSHORE...BUT REMNANT
WAVES WILL CONTINUE THROUGH EARLY TUESDAY MORNING.

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.

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.

&&

$$

PZZ450-475-240630-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
325 PM PDT MON AUG 23 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TUESDAY AS THE HIGH SHIFTS
OFFSHORE. STEEP SEAS WILL BUILD TO 6 TO 9 FT THIS AFTERNOON AND
EVENING IN RESPONSE TO THE NORTHERLY WINDS.

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.

&&

$$

PZZ455-240400-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T0400Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
325 PM PDT MON AUG 23 2010

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING. 

HIGH PRESSURE BUILDING OVER THE EASTERN PACIFIC INTERACTING WITH
LOW PRESSURE OVER INTERIOR CALIFORNIA WILL CAUSE NORTH WINDS TO
INCREASE TODAY. WINDS WILL EASE TONIGHT AS THE HIGH SHIFTS
OFFSHORE. STEEP SEAS WILL BUILD TO 5 TO 7 FT THIS AFTERNOON AND
EVENING IN RESPONSE TO THE NORTHERLY WINDS.

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.

&&

$$
440 
WHUS76 KEKA 240341
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
841 PM PDT MON AUG 23 2010

PZZ470-241145-
/O.CON.KEKA.GL.W.0124.000000T0000Z-100824T1200Z/
/O.CON.KEKA.SE.W.0073.000000T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
841 PM PDT MON AUG 23 2010

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT
TUESDAY...

A GALE WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY. A
HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT TUESDAY. 

STRONG NORTH WINDS WILL CONTINUE THROUGH TONIGHT WITH SUSTAINED
SPEEDS UP TO 30 KT WITH GUSTS UP TO 40 KT. SHORT PERIOD COMBINED
SEAS WILL GROW TO NEAR 12 FT AT 8 SECONDS TONIGHT...AND WILL BEGIN
TO DIMINISH AS WINDS EASE ON TUESDAY. 

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.

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.

&&

$$

PZZ455-241145-
/O.EXT.KEKA.SC.Y.0064.000000T0000Z-100824T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
841 PM PDT MON AUG 23 2010

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 9 AM PDT TUESDAY.

STEEP SEAS WILL BUILD TO 5 TO 7 FT TONIGHT IN RESPONSE TO STRONG
NORTH WINDS OFFSHORE. SEAS WILL BEGIN TO DIMINISH ON TUESDAY AS
THE WINDS EASE.

TO INCREASE TODAY. WINDS WILL EASE TONIGHT AS
THE HIGH SHIFTS OFFSHORE. STEEP SEAS WILL BUILD TO 5 TO 7 FT THIS
AFTERNOON AND EVENING IN RESPONSE TO THE NORTHERLY WINDS.

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.

&&

$$

PZZ450-475-241145-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
841 PM PDT MON AUG 23 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY. 

STEEP COMBINED SEAS WILL BUILD TO 6 TO 9 FT TONIGHT IN RESPONSE
TO THE STRONG NORTH WINDS OVER THE OUTER WATERS NORTH OF CAPE
MENDOCINO. THE SEAS WILL DIMINISH ON TUESDAY AS THE WINDS BEGIN TO EASE.

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.

&&

$$
019 
WHUS76 KEKA 240945
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
245 AM PDT TUE AUG 24 2010

PZZ470-242200-
/O.CAN.KEKA.GL.W.0124.000000T0000Z-100824T1200Z/
/O.CAN.KEKA.SE.W.0073.000000T0000Z-100824T1600Z/
/O.EXA.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
245 AM PDT TUE AUG 24 2010

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...
...GALE WARNING IS CANCELLED...
...HAZARDOUS SEAS WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON. THE
HAZARDOUS SEAS WARNING HAS BEEN CANCELLED. THE GALE WARNING HAS
BEEN CANCELLED. 

THE SURFACE PRESSURE GRADIENT HAS WEAKENED...ALLOWING GALE
CONDITIONS TO END. LIGHT TO MODERATE NORTH WINDS WILL CONTINUE
THROUGH THIS AFTERNOON.

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.

&&

$$

PZZ455-241045-
/O.CAN.KEKA.SC.Y.0064.000000T0000Z-100824T1600Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
245 AM PDT TUE AUG 24 2010

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE SMALL
CRAFT ADVISORY. 

WINDS AND SEAS HAVE FALLEN BELOW ADVISORY CRITERIA.

$$

PZZ450-475-241600-
/O.EXT.KEKA.SC.Y.0064.000000T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
245 AM PDT TUE AUG 24 2010

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 9 AM PDT THIS
MORNING. 

EASING WINDS OFFSHORE WILL ALLOW THE SHORT PERIOD SEAS TO
DIMINISH THIS 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.

&&

$$
193 
WHUS76 KEKA 241540
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
840 AM PDT TUE AUG 24 2010

PZZ450-475-241645-
/O.EXP.KEKA.SC.Y.0064.000000T0000Z-100824T1600Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
840 AM PDT TUE AUG 24 2010

...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING...

THE SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING. 



$$

PZZ470-242200-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
840 AM PDT TUE AUG 24 2010

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

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

THE SURFACE PRESSURE GRADIENT HAS WEAKENED...ALLOWING GALE
CONDITIONS TO END. LIGHT TO MODERATE NORTH WINDS WILL CONTINUE
THROUGH THIS AFTERNOON.

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.

&&

$$
875 
WHUS76 KEKA 242104
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
204 PM PDT TUE AUG 24 2010

PZZ470-242215-
/O.CON.KEKA.SC.Y.0064.000000T0000Z-100824T2200Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
204 PM PDT TUE AUG 24 2010

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

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

THE SURFACE PRESSURE GRADIENT HAS WEAKENED...ALLOWING GALE
CONDITIONS TO END. LIGHT TO MODERATE NORTH WINDS WILL CONTINUE
WEDNESDAY.

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.

&&

$$

What forecasters said that day

The local office's own words before this small craft advisory 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 small craft advisory went out at Aug 20, 1:46 PM PDT, 13 hours 5 minutes earlier.

Area forecast discussion, Aug 20, 1:46 PM PDT, 13 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
146 PM PDT FRI AUG 20 2010

.SYNOPSIS...COASTAL AREAS WILL CONTINUE TO EXPERIENCE COOL AND
CLOUDY CONDITIONS WITH SOME BRIEF AFTERNOON SUNSHINE. ACROSS THE
INTERIOR...AFTERNOON CLOUDS AND A COOLING TREND ARE EXPECTED FOR
THE WEEKEND AS A TROUGH OF LOW PRESSURE MOVES THROUGH THE REGION.

&&

.DISCUSSION...AFTERNOON SURFACE ANALYSIS SHOWS TYPICAL PRESSURE
PATTERN WITH EKA FORECAST AREA SITUATED BETWEEN HIGH PRESSURE AXIS
OFF THE PACIFIC NORTHWEST COAST AND GREAT BASIN THERMAL LOW
PRESSURE. ALOFT...WATER VAPOR IMAGERY SHOWS SHORT WAVE AHEAD OF
DIGGING TROUGH NOW LIFTING NORTHEAST JUST OFF THE NORTHERN CA COAST.
AIRMASS REMAINS VERY DRY PER FORECAST SOUNDINGS AND 12Z KOAK
SOUNDING. IF ANYTHING...A FEW CU BUILD-UPS THIS LATE AFTERNOON
WILL BE ALL THAT RESULTS FROM THIS INITIAL SHORT WAVE.

AS BASE OF LONGER WAVE TROUGH PIVOTS OVERHEAD SATURDAY...SIGNIFICANT
COOLING AND STRONGER FORCING SHOULD RESULT IN MORE CONVECTIVE
ACTIVITY. HOWEVER...INSTABILITY REMAINS MINUSCULE. THEREFORE...HAVE
INTRODUCED SMALL POPS FOR SHOWERS OVER THE TRINITY ALPS...BUT LEFT
MENTION OF THUNDER OUT ATTM. SUNDAY...THE TROUGH LIFTS QUICKLY
NORTHEAST OUT OF - WHILE RIDGING BUILDS OVER - THE REGION.

THE FORECAST FOR THE FIRST PART OF NEXT WEEK REMAINS
CONSISTENT...WITH BROAD UPPER RIDGE IN PROGRESSIVE PATTERN MOVING
THROUGH THE REGION. THIS WILL BRING A WARMING TREND TO THE NW CA
REGION...WITH AFTERNOON SUNSHINE BECOMING MORE LIKELY ALONG THE
COASTS. IN FACT...BOTH 12Z GFS AND ECMWF ARE STILL INDICATING 30C
H85 TEMPS NOSING INTO TRINITY COUNTY BY 00Z WEDNESDAY. COOLING TREND
THEN SETS IN ONCE AGAIN FOR THE LATTER HALF OF THE WEEK AS UPPER
TROUGH PIVOTS ACROSS THE PACIFIC NORTHWEST. HENRY

&&

.AVIATION...LOW CLOUDS WILL RETURN IFR CONDITIONS TO THE COAST
TONIGHT. A SHALLOW MARINE LAYER SHOULD LIMIT THE STRATUS TO THE
IMMEDIATE COAST...WHICH SHOULD DISSIPATE LATE SAT MORNING. TH

&&

.MARINE...THE SURFACE PRESSURE GRADIENT WILL RELAX LATE TONIGHT AND
SAT AS A WEAK LOW APPROACHES THE WATERS. LIGHT WINDS AND LOW SEAS
EXPECTED SATURDAY AND MOST OF SUNDAY. THE GRADIENT WILL TIGHTEN
SUNDAY AFTERNOON AND NORTH WINDS WILL INCREASE THROUGH MONDAY. THE
THERMAL TROUGH OVER CA WILL MOVE NORTHWARD TUESDAY AND PUSH THE
TIGHT GRADIENT OFFSHORE...WITH WIND AND SEAS DECREASING ACROSS MOST
OF THE WATERS. THE GRADIENT WILL STILL REMAIN TIGHT BEYOND 15 NM
NORTH OF CAPE MENDOCINO WHERE SMALL CRAFT CONDITIONS WILL PREVAIL
THROUGH AT LEAST WEDNESDAY. TH

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL 6 AM PDT SATURDAY PZZ470-475.

&&

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
Hazardous weather outlook, Aug 20, 5:32 AM PDT, 21 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
532 AM PDT FRI AUG 20 2010

CAZ001>004-076-211300-
REDWOOD COAST-MENDOCINO COAST-NORTH COAST INTERIOR-
UPPER TRINITY RIVER-MENDOCINO INTERIOR-
532 AM PDT FRI AUG 20 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

Nearby

Small Craft Advisories in California, 2010Every small craft advisory in 2010

Sources

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