Small Craft Advisory 69, NWS Eureka, CA

894 
WHUS76 KEKA 181520
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
820 AM PDT SAT SEP 18 2010

PZZ470-182330-
/O.CON.KEKA.SC.Y.0069.100918T1600Z-100919T0400Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
820 AM PDT SAT SEP 18 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. 

LOW PRESSURE MOVING TO THE NE...JUST OUTSIDE OF THE FORECAST
WATERS...WILL CAUSE INCREASING WINDS AND BUILDING SEAS THIS
MORNING. THE MAIN AFFECTS OF THIS WILL BE FELT IN THE WATERS
10 TO 60 NM OUT NORTH OF CAPE MENDOCINO. WHILE FAIRLY SHORT
LIVED...IT WILL BRING SHORT PERIOD STEEP SEAS TO THE AREA TODAY
INTO TONIGHT. THIS IS ON TOP OF AN ALREADY PRESENT LONG PERIOD
SOUTHERLY WAVE GROUP.

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.

&&

$$

014 
WHUS76 KEKA 182138
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
238 PM PDT SAT SEP 18 2010

PZZ470-190545-
/O.EXT.KEKA.SC.Y.0069.000000T0000Z-100919T1000Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
238 PM PDT SAT SEP 18 2010

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT SUNDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 3 AM PDT SUNDAY. 

LOW PRESSURE MOVING TO THE NE...JUST OUTSIDE OF THE FORECAST
WATERS...WILL MAINTAIN ADVISORY LEVEL WINDS AND SHORT PERIOD
STEEP SEAS TO THE WATERS 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.

&&

$$

287 
WHUS76 KEKA 190316
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
816 PM PDT SAT SEP 18 2010

PZZ470-191000-
/O.CON.KEKA.SC.Y.0069.000000T0000Z-100919T1000Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
816 PM PDT SAT SEP 18 2010

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT SUNDAY. 

LOW PRESSURE MOVING TO THE NE...JUST OUTSIDE OF THE FORECAST
WATERS...WILL MAINTAIN ADVISORY LEVEL WINDS AND SHORT PERIOD
STEEP SEAS TO THE WATERS 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.

&&

$$

807 
WHUS76 KEKA 190935
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
235 AM PDT SUN SEP 19 2010

PZZ470-191045-
/O.EXP.KEKA.SC.Y.0069.000000T0000Z-100919T1000Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
235 AM PDT SUN SEP 19 2010

...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 AM PDT EARLY THIS
MORNING...

THE SMALL CRAFT ADVISORY WILL EXPIRE AT 3 AM PDT EARLY THIS
MORNING. 

WINDS HAVE FALLEN BELOW ADVISORY CRITERIA SO WILL ALLOW THE
ADVISORY TO EXPIRE AS SCHEDULED.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
310 PM PDT FRI SEP 17 2010

.SYNOPSIS...AN EARLY FALL STORM WILL BRING WIDESPREAD RAIN TO
NORTHWEST CALIFORNIA THROUGH TONIGHT. ADDITIONAL PERIODS OF
RAIN ARE EXPECTED THROUGH THE WEEKEND. A DRYING TREND WILL COMMENCE
ON MONDAY.

&&

.DISCUSSION...SATELLITE IMAGERY HAS THE FIRST COLD FRONT JUST OFF THE
NORTH COAST AND SLOWLY TRACKING EASTWARD. RADAR IS SHOWING A SOMEWHAT
FRAGMENTED BAND OF RAIN SLIDING OVER THE COAST AT THIS TIME. BASED
ON RETURNS AND SAT PICS THINKING THE QPF AMOUNTS ASSOCIATED WITH
THIS FEATURE MAY BE OVERDONE. NAM12 AND RUC HAVE INITIALIZED THIS
FRONT WELL AND BASED ON THEIR QPF HAVE REDUCED TODAYS AMOUNTS AS WELL
AS SATURDAYS...BUT LEFT SUNDAYS ALONE. THIS BAND OF RAIN WILL MOVE OVER
THE COAST THIS AFTERNOON WHILE THE SOUTHERN TAIL OF THE BAND CONTINUES TO
TRACK NORTHEAST WARD THROUGH THE EVENING. A BRIEF BREAK IN THE RAIN
SHOULD OCCUR OVER NIGHT AND THROUGH THE MORNING HOURS BEFORE ANOTHER
WAVE OF ENERGY BRINGS MORE RAIN TO THE REGION LATER ON SATURDAY / EARLY
SUNDAY WITH LINGERING SHOWERS SUNDAY AFTERNOON. THESE SHOWERS SHOULD TAPER
OFF ON MONDAY AND A WARMING AND DRYING TREND WILL BEGIN. AS MENTIONED
ABOVE HAVE ADJUSTED THE SHORT TERM AMOUNTS FOR THIS THE REMAINDER OF
TODAY AND TOMORROW...THUS THE INITIAL FORECASTED AMOUNTS FOR THE WEEKEND
CAN BE SCALED BACK A BIT.  ANOTHER INTERESTING NOTE WAS THE BRIEF WARM UP
OCCURING IN AND AROUND THE HUMBOLDT BAY REGION EARLIER.  MAX TEMPS AROUND
EUREKA WERE RECORDED JUST BEFORE NOON REACHING THE LOW TO MID 70S...NOT
COMPLETELY UNCOMMON DURING PREFONTAL SOUTHERLY WINDS IN THE FALL. THIS
MAY OCCUR AGAIN TOMORROW BEFORE THE NEXT BOUNDARY ARRIVES THUS HAVE ADJUSTED
OVERNIGHT LOWS AND TOMORROWS HIGHS FOR THE AREA.

&&

.AVIATION...THE COLD FRONT IS MOVING ONTO THE COAST AT 2PM WITH IFR
TO LIFR CONDITIONS IN RAIN. FURTHER INLAND CLOUDS ARE MVFR WITH
HIGHER CLOUDS PARTIALLY OBSCURING MTNS. THE FRONT WILL MOVE INLAND
EARLY THIS EVENING. THERE WILL BE SUBSTANTIAL AMOUNT OF LOW LEVEL
MOISTURE FOR THE IFR TO LIFR CIGS AND VSBYS TONIGHT AND SAT MORNING
NEAR THE COAST AHEAD OF A SECOND FRONT. FURTHER INLAND CIGS AND
VSBYS WILL DROP TO IFR WITH THE FRONT LATE AFTERNOON AND EVENING
WITH RAIN DECREASING TO THE SOUTH. FZLVLS WILL RANGE FROM 11K IN THE
NORTH TO 13K IN THE SOUTH. DEAN

&&

.MARINE...THERE IS LARGE LOW PRESSURE SYSTEM ABOUT 850 NM OFF THE
COAST WITH WEAKER LOWS PINWHEELING AROUND IT. WHILE THIS LOW IS TO
THE EAST...LIGHT TO MODERATE SOUTHERLY WINDS WILL CONTINUE. IT IS
NOT UNTIL THE MAIN LOW FINALLY MOVES NE AND INLAND SUNDAY NIGHT AND
THE SURFACE HIGH BUILDS THAT THE WINDS TURN TO THE NORTHWEST. THAT
WILL OCCUR FIRST IN THE WATERS SOUTH OF THE CAPE MONDAY MORNING AND
THEN NORTH OF THE CAPE BY MONDAY EVENING. THESE NORTHERLY WINDS WILL
NOT BE AS STRONG OR AS LONG LIVED AS PREVIOUSLY FORECAST AS ANOTHER
LOW APPROACHES THE WATERS OFF THE PACIFIC NORTHWEST TOWARD MIDWEEK.
SEA STATES IS STILL WHERE THE FORECAST CHALLENGE IS IN THIS PATTERN.
A LONG PERIOD SWELL FROM THE SOUTHERN HEMISPHERES IS WAVES FOR THE
NE PACIFIC. THIS WILL BE EVIDENT OVER THE WEEKEND AS 4 FOOT 15 TO 17
SEC WAVES FROM THE SOUTH MOVE THROUGH THE AREA. LOCAL WAVES WILL
CONTINUE TO BE GENERATED THROUGH THE WEEKEND WITH THE SOUTHERLY
WINDS ASSOCIATED WITH THE LOW WELL OFF THE COAST. THIS IS CREATING A
CONFUSED SEA STATE WITH WIND WAVES...FRESH SWELL....AND LONG PERIOD
SWELL. THE NEXT WAVE GROUP TO WATCH WILL BE A LONG PERIOD SWELL OUT
OF THE WNW MOVING INTO THE AREA EARLY NEXT WEEK. THIS APPEARS TO BE
THE FIRST LONG PERIOD WNW SWELL FOR THE SEASON. BFG/DEAN

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...NONE.

&&

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
303 AM PDT FRI SEP 17 2010

CAZ001>004-076-181230-
REDWOOD COAST-MENDOCINO COAST-NORTH COAST INTERIOR-
UPPER TRINITY RIVER-MENDOCINO INTERIOR-
303 AM PDT FRI SEP 17 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT.

AN EARLY FALL STORM IS FORECAST TO BRING WIDESPREAD RAINFALL TO
NORTHWEST CALIFORNIA TODAY. EXPECT SHOWERS THROUGH TONIGHT.

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

A SECOND IMPULSE OF ENERGY WILL BRING MORE RAIN TO THE REGION ON
SATURDAY WITH ADDITIONAL SHOWERS ON SUNDAY. SHOWERS WILL TAPER OFF
ON MONDAY.

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