Small Craft Advisory 989, NWS Seattle, WA

754 
WHUS76 KSEW 220331
MWWSEW

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
831 PM PDT MON MAY 21 2012

PZZ130-150-153-156-170-173-176-221145-
/O.CON.KSEW.SC.Y.0989.000000T0000Z-120522T1300Z/
WEST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
COASTAL WATERS FROM CAPE FLATTERY TO JAMES ISLAND OUT 10 NM-
COASTAL WATERS FROM JAMES ISLAND TO POINT GRENVILLE OUT 10 NM-
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER OUT 10 NM-
WATERS FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10 TO 60 NM-
831 PM PDT MON MAY 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PDT
TUESDAY...

* WIND AND WAVES...SOUTHWEST WIND 15 TO 25 KNOTS WITH WIND WAVES 
  2 TO 5 FEET. 

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.

&&

$$

PZZ131-132-221145-
/O.CON.KSEW.SC.Y.0987.000000T0000Z-120522T1500Z/
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
831 PM PDT MON MAY 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT
TUESDAY...

* WIND AND WAVES...WEST WIND 15 TO 30 KNOTS WITH WIND WAVES 2 TO 5 
FEET.

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.

&&

$$

PZZ133-221145-
/O.CON.KSEW.SC.Y.0989.000000T0000Z-120522T1500Z/
NORTHERN INLAND WATERS INCLUDING THE SAN JUAN ISLANDS-
831 PM PDT MON MAY 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT
TUESDAY...

* WIND AND WAVES...SOUTHWEST WIND 15 TO 25 KNOTS WITH WIND WAVES 
  2 TO 4 FEET. 

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.

&&

$$

PZZ134-135-221145-
/O.CON.KSEW.SC.Y.0987.000000T0000Z-120522T1300Z/
ADMIRALTY INLET-PUGET SOUND AND HOOD CANAL-
831 PM PDT MON MAY 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PDT
TUESDAY...

* WIND AND WAVES...WIND 15 TO 30 KNOTS WITH WIND WAVES 2 TO 5 FEET.

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.

&&

$$


WWW.WEATHER.GOV/SEATTLE

647 
WHUS76 KSEW 220939
MWWSEW

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
239 AM PDT TUE MAY 22 2012

PZZ156-176-221745-
/O.CAN.KSEW.SC.Y.0989.000000T0000Z-120522T1300Z/
/O.NEW.KSEW.SC.Y.0990.120522T2100Z-120523T0400Z/
COASTAL WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER OUT 10 NM-
WATERS FROM POINT GRENVILLE TO CAPE SHOALWATER 10 TO 60 NM-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO
9 PM PDT THIS EVENING...
...SMALL CRAFT ADVISORY THIS MORNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 PM
PDT THIS EVENING. THE SMALL CRAFT ADVISORY HAS BEEN CANCELLED FOR
THIS MORNING.

* WIND AND WAVES...SOUTHWEST WIND 15 TO 25 KNOTS WITH WIND WAVES 
  2 TO 5 FEET FOR 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.

&&

$$

PZZ130-150-153-170-173-221045-
/O.CAN.KSEW.SC.Y.0989.000000T0000Z-120522T1300Z/
WEST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
COASTAL WATERS FROM CAPE FLATTERY TO JAMES ISLAND OUT 10 NM-
COASTAL WATERS FROM JAMES ISLAND TO POINT GRENVILLE OUT 10 NM-
WATERS FROM CAPE FLATTERY TO JAMES ISLAND 10 TO 60 NM-
WATERS FROM JAMES ISLAND TO POINT GRENVILLE 10 TO 60 NM-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

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

WINDS ARE LESS THAN 21 KNOTS.


$$

PZZ134-221045-
/O.CAN.KSEW.SC.Y.0987.000000T0000Z-120522T1300Z/
ADMIRALTY INLET-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

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

WIND HAVE DIMINISHED.

$$

PZZ133-221300-
/O.EXT.KSEW.SC.Y.0989.000000T0000Z-120522T1300Z/
NORTHERN INLAND WATERS INCLUDING THE SAN JUAN ISLANDS-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM PDT EARLY THIS
MORNING...

* WIND AND WAVES...SOUTHWEST WIND 15 TO 25 KNOTS WITH WIND WAVES 
  2 TO 4 FEET. 

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.

&&

$$

PZZ131-132-221500-
/O.CON.KSEW.SC.Y.0987.000000T0000Z-120522T1500Z/
CENTRAL U.S. WATERS STRAIT OF JUAN DE FUCA-
EAST ENTRANCE U.S. WATERS STRAIT OF JUAN DE FUCA-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS
MORNING...

* WIND AND WAVES...WEST WIND 15 TO 25 KNOTS WITH WIND WAVES 2 TO 4 FEET.

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.

&&

$$

PZZ135-221300-
/O.CON.KSEW.SC.Y.0987.000000T0000Z-120522T1300Z/
PUGET SOUND AND HOOD CANAL-
239 AM PDT TUE MAY 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PDT EARLY
THIS MORNING...

* WIND AND WAVES...WIND 15 TO 25 KNOTS WITH WIND WAVES 2 TO 4 FEET.

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.

&&

$$


WWW.WEATHER.GOV/SEATTLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
900 AM PDT MON MAY 21 2012

.SYNOPSIS...A COLD FRONT WILL BRING RAIN AND BREEZY CONDITIONS TO
WESTERN WASHINGTON TODAY. AN UPPER TROUGH WILL MOVE OVER THE REGION
TONIGHT AND TUESDAY FOR COOL SHOWERY AND BREEZY WEATHER. THE SNOW
LEVEL WILL BE 4000 FEET IN THE MOUNTAINS TUESDAY WITH SIGNIFICANT
PRECIPITATION. AN UPPER TROUGH WILL REMAIN OVER THE AREA WEDNESDAY
THROUGH FRIDAY FOR SCATTERED SHOWERS AND MOSTLY CLOUDY SKIES.

&&

.SHORT TERM...LATEST RADAR AND OBS INDICATE GENERALLY LIGHT RAIN
ACROSS MOST OF WRN WA THIS MORNING. IR SATELLITE IMAGERY SHOWS THE
BRIGHTEST CLOUD TOPS JUST NOW PUSHING INLAND WITH THE SURFACE COLD
FRONT ABOUT 100 NM W OF THE WA COAST. CURRENT TIMING PUTS THE FRONT
AT THE COAST AROUND 2 PM TODAY...AND A COUPLE HOURS LATER INTO PUGET
SOUND. RAINFALL AMOUNTS THE PAST 6 HOURS ARE NOT TOO IMPRESSIVE WITH
LESS THAN A TENTH OF AN INCH ACROSS MOST LOWLANDS AND MAYBE UP TO A
QUARTER INCH IN SOME COASTAL/MOUNTAIN AREAS. THIS IS OF COURSE ON
TOP OF THE HALF TO 1.5 INCHES THAT FELL YESTERDAY AND OVERNIGHT.
ANOTHER QUARTER TO 1 INCH OF RAIN CAN BE EXPECTED TODAY AHEAD OF AND
ALONG THE COLD FRONT. PRECIPITATION RATES WILL LIKELY INCREASE
THROUGH MIDDAY AS THE FRONT APPROACHES.

THE FRONT WILL MOVE EAST OF THE CASCADES EARLY THIS EVENING. SHOWERS
WILL DOMINATE ACROSS THE LOWLANDS BUT SOMEWHAT STEADIER RAIN WILL
CONTINUE IN THE MOUNTAINS DUE TO ONSHORE WLY FLOW. PRE-FRONTAL SNOW
LEVELS TODAY ARE AROUND 6000 FEET BUT SHOULD FALL TO AROUND 4000
FEET LATER TONIGHT AND TUESDAY. THE HEAVIER SNOWFALL WILL OCCUR IN
THE HIGHER MOUNTAINS ABOVE THE MAIN PASSES BUT SOME LIGHT
ACCUMULATIONS COULD EVENTUALLY DEVELOP IN SOME OF THE CASCADE
PASSES. SNOW AMOUNTS THROUGH TUESDAY ABOVE 5500 FEET COULD REACH
NEAR A FOOT...WITH A FEW INCHES POSSIBLE AT PASSES. A SPECIAL
WEATHER STATEMENT IS STILL IN EFFECT WHICH HIGHLIGHTS THE CHANGING
CONDITIONS...ESPECIALLY IMPACTING BACKCOUNTRY TRAVEL AND RECREATION.
WILL ALSO NEED TO WATCH FOR PUGET SOUND CONVERGENCE ZONE DEVELOPMENT
TUESDAY INTO WEDNESDAY. THIS COULD PRODUCE LOCALLY HIGHER
RAIN/MOUNTAIN SNOW AMOUNTS NORTH OF I-90.

THE MAIN UPPER TROUGH BEGINS TO SHIFT EWD WEDNESDAY. SHOWERS SHOULD
GENERALLY TAPER OFF BUT THERE IS STILL THE CHANCE OF A LINGERING
CONVERGENCE ZONE. MOISTURE WILL BE ON THE DECREASE WITH PARTY SUNNY
SKIES A GOOD BET ACROSS THE LOWLANDS IN THE AFTERNOON. HIGH
TEMPERATURES WILL STILL REMAIN BELOW AVERAGE WITH NOT MUCH WARM UP
UNTIL POSSIBLY THE END OF THE WEEK.  MERCER

.LONG TERM...PREVIOUS DISCUSSION FOLLOWS...THE UPPER LOW OFFSHORE OF
BRITISH COLUMBIA WILL MOVE SOUTHEAST...MAKING ITS WAY ACROSS THE
WASHINGTON OFFSHORE WATERS AROUND THURSDAY AND THEN INTO NORTHERN
CALIFORNIA OR NEVADA ON FRIDAY. AS THE UPPER LOW MOVES SOUTH...A
WEAK UPPER RIDGE WILL DEVELOP OVER SOUTHERN BRITISH COLUMBIA. THE
RIDGE WILL REMAIN OVER THE AREA ON SATURDAY...BUT THE LATEST MODELS
RUNS SHOW ANOTHER UPPER TROUGH MOVING IN ON SUNDAY. THE PERIOD
THURSDAY THROUGH SUNDAY WILL GENERALLY BE SOMEWHAT COOL...WITH
SCATTERED MAINLY LIGHT SHOWERS AND PARTLY SUNNY TO MOSTLY CLOUDY
SKIES. I MADE SOME MINOR CHANGES TO THE LONG TERM FORECAST TO
INDICATE A BIT MORE SUNSHINE.   MCDONNAL

&&

.AVIATION...SOUTHWESTERLY FLOW ALOFT TODAY BECOMING WESTERLY
TONIGHT. COLD FRONT OFFSHORE WILL MOVE THROUGH THE AREA THIS
AFTERNOON. MODERATE SOUTHEASTERLY SURFACE FLOW WILL BECOME MODERATE
ONSHORE LATE THIS AFTERNOON AND EVENING. AIR MASS MOIST AND STABLE.

CEILINGS RANGE FROM LIFR TO VFR BUT THE GENERAL TREND AS THE COLD
FRONT APPROACHES IS FOR MVFR 2-3K FT. AS THE FRONT PASSES THERE WILL
BE LOCAL IFR CEILINGS WITH VISIBILITIES 3-5SM. AFTER COLD FRONTAL
PASSAGE...AROUND 20Z COAST AND 23Z INLAND...CEILINGS SHOULD IMPROVE
TO MAINLY VFR.

KSEA...DISCUSSION ABOVE APPLIES. SOUTHERLY WIND 8-12 KNOTS WILL
BECOME SOUTHWEST AND INCREASE TO 12G22 KT AFTER 23Z. CHB

&&

.MARINE...SMALL CRAFT ADVISORIES IN EFFECT FOR ALL THE WATERS TODAY
AND TONIGHT AS A COLD FRONT MOVES THROUGH THE AREA. AHEAD OF THE
FRONT SMALL CRAFT ADVISORY STRENGTH SOUTHERLIES OVER ALL THE WATERS
EXCEPT THE CENTRAL STRAIT AND PUGET SOUND AND HOOD CANAL. FRONT
REACHING THE COAST EARLY AFTERNOON AND WILL MOVE INTO THE CASCADES
BY LATE AFTERNOON. BEHIND THE FRONT TONIGHT SMALL CRAFT ADVISORY
WINDS ALL WATERS.

ONSHORE FLOW TUESDAY WITH A SURFACE TROUGH MOVING THROUGH THE
WATERS. ONSHORE FLOW WILL CONTINUE WEDNESDAY THEN BEGIN TO EASE ON
THURSDAY AND FRIDAY. EXPECT SMALL CRAFT ADVISORY STRENGTH WESTERLY
WINDS THROUGH THE STRAIT OF JUAN DE FUCA AT TIMES. CHB

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...NONE.
PZ...SMALL CRAFT ADVISORY ALL WATERS.

&&

YOU CAN SEE AN ILLUSTRATED VERSION OF THE FORECAST DISCUSSION AT
WWW.WEATHER.GOV/SEATTLE/GAFD/LATEST_WEBAFD.HTML.