Wind Advisory 18, NWS Seattle, WA

000 
WWUS76 KSEW 061205
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
405 AM PST FRI DEC 6 2013

WAZ001-503-515-070000-
/O.CON.KSEW.WI.Y.0018.000000T0000Z-131207T1200Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-
WESTERN STRAIT OF JUAN DE FUCA-
405 AM PST FRI DEC 6 2013

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY...

* SOME AFFECTED LOCATIONS...BELLINGHAM...FERNDALE...SUMAS...
  LUMMI ISLAND...EASTSOUND...FRIDAY HARBOR...SEKIU. 

* TIMING...NORTHEAST OUTFLOW WINDS WILL INCREASE THIS MORNING THEN
  REMAIN STEADY THROUGH TONIGHT. 

* WIND...NORTHEAST WIND INCREASING TO 20 TO 30 MPH WITH GUSTS TO
  45 MPH.

* IMPACTS...DOWNED TREE LIMBS AND LOCAL POWER OUTAGES ARE 
  POSSIBLE. WIND CHILLS IN THE SINGLE DIGITS POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS OF 30 TO 39 MPH
AND/OR GUSTS OF 45 TO 57 MPH ARE LIKELY.

&&

$$

000 
WWUS76 KSEW 062339
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
339 PM PST FRI DEC 6 2013

WAZ001-503-515-070745-
/O.CON.KSEW.WI.Y.0018.000000T0000Z-131207T1200Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-
WESTERN STRAIT OF JUAN DE FUCA-
339 PM PST FRI DEC 6 2013

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY...

* SOME AFFECTED LOCATIONS...BELLINGHAM...FERNDALE...SUMAS... 
  LUMMI ISLAND...EASTSOUND...FRIDAY HARBOR...SEKIU. 

* TIMING...NORTHEAST OUTFLOW WINDS WILL CONTINUE THROUGH TONIGHT.

* WIND...NORTHEAST WIND 20 TO 35 MPH WITH GUSTS TO 50 MPH.

* IMPACTS...DOWNED TREE LIMBS AND LOCAL POWER OUTAGES ARE 
  POSSIBLE. WIND CHILLS IN THE SINGLE DIGITS POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS OF 30 TO 39 MPH
AND/OR GUSTS OF 45 TO 57 MPH ARE LIKELY.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
905 AM PST THU DEC 5 2013

.SYNOPSIS...A WEAK WEATHER SYSTEM WILL MOVE BY MAINLY TO THE WEST
LATER TODAY AND TONIGHT FOR A CHANCE OF SNOW WEST OF PUGET SOUND. AS
THE SYSTEM MOVES SOUTH OF THE AREA ANOTHER SHOT OF COLD AIR WILL
MOVE DOWN OVER THE AREA FROM BRITISH COLUMBIA TONIGHT WITH THE COLD
AND DRY AIR MASS REMAINING OVER THE REGION THROUGH THE WEEKEND.
TEMPERATURES MAY BEGIN TO MODERATE ACROSS THE REGION NEXT TUESDAY
AND WEDNESDAY AS THE LOW LEVEL FLOW FLIPS BACK TO ONSHORE.

&&

.SHORT TERM...IT IS ANOTHER CHILLY MORNING ACROSS WESTERN
WASHINGTON. TEMPS DIPPED INTO THE TEENS AND 20S ACROSS THE REGION.
THE COLDEST POCKETS ARE IN THE SW INTERIOR AND HOOD CANAL. EXPECT
HIGHS TODAY ONLY IN THE 30S. A HIGH AMPLITUDE RIDGE OFFSHORE WILL
MAINTAIN NORTH FLOW OVER THE AREA TODAY...WHILE DRY LOW LEVEL
OFFSHORE FLOW CONTINUES. A WEAK UPPER LEVEL DISTURBANCE WILL CLIP
WESTERN WA BRINGING AN INCREASE IN MID/HIGH CLOUDS. WE MAY SEE A FEW
FLURRIES DROP OUT OF THE MID LEVEL DECK...OTHERWISE DRY WEATHER IS
EXPECTED. MODELS SHOW NE PRES GRADIENTS INCREASING ONCE AGAIN LATE
TONIGHT...WITH STRONG NLY WINDS OUT OF THE FRASER RIVER VALLEY.
WESTERN WHATCOM AND THE SAN JUANS MAY SEE WIND ADVISORY SPEEDS. THIS
UPPER LEVEL DISTURBANCE WILL EXIT FRI MORNING WITH SKIES BECOMING
CLEAR AGAIN. TEMPS MAY DROP FURTHER FRI NIGHT WITH LOWS MAINLY IN
THE TEENS. IT WILL BE SUNNY BUT COLD ON SAT WITH HIGHS NEAR 30
DEGREES. 33

.LONG TERM...PREVIOUS DISCUSSION...COLD/DRY PATTERN CONTINUING INTO
SUNDAY WITH THE SURFACE HIGH DROPPING DOWN OVER EASTERN WASHINGTON.
HIGH TEMPERATURES REMAINING WELL BELOW NORMAL...IN THE UPPER 20S TO
MID 30S. WITH THE WEAKENING GRADIENTS AS THE HIGH MOVES SOUTHEAST
WINDS WILL EASE RESULTING IN EVEN COOLER OVERNIGHT LOW TEMPERATURES
MONDAY MORNING. TEENS WILL BE WIDESPREAD WITH SINGLE DIGITS AGAIN
POSSIBLE IN THE COLDEST LOCATIONS. THE GFS AND ECMWF ARE NOW BACKING
OFF ON THE TIMING OF THE NEXT SYSTEM TO MOVE INTO THE AREA...PUSHING
THE ONSET OF PRECIPITATION BACK INTO TUESDAY. THE CANADIAN STILL HAS
SOME PRECIPITATION MONDAY NIGHT. THE CANADIAN SOLUTION BRINGS UP THE
POSSIBILITY OF LIGHT SNOW MONDAY NIGHT WHILE THE SLOWER ECMWF AND
GFS TRANSITION TO A WARMER AIR MASS QUICKLY ON TUESDAY. WARM ENOUGH
SO BY THE TIME THE PRECIPITATION STARTS IT WOULD BE IN THE FORM OF
RAIN. THE EXCEPTION BEING THE POSSIBILITY OF COLD AIR BEING TRAPPED
NEAR THE HOOD CANAL WITH THE SOUTHEASTERLY SURFACE GRADIENTS. WITH
THE CANADIAN STILL HOLDING ON TO THE FASTER SOLUTION WILL NOT MAKE
ANY CHANGES TO THE EXTENDED FORECAST THIS MORNING KEEPING THE CHANCE
OF SNOW IN THE FORECAST MONDAY NIGHT. CONFIDENCE IN THIS SCENARIO IS
WANING AND IF THE 12Z MODELS COME IN WITH A SIMILAR SOLUTION TO THE
00Z GFS AND ECMWF LOOK FOR THE SNOW TO BE TAKEN OUT OF THE MONDAY
NIGHT FORECAST. ALL OF THE MODELS ARE WET AT SOME POINT WEDNESDAY
WITH THE GFS AND ECMWF INDICATING AN INCH OR MORE OF RAIN IN THE
LOWLANDS. FELTON

&&

.CLIMATE...SEATTLE HAS THE POTENTIAL TO HAVE THREE CONSECUTIVE
MORNINGS...SATURDAY...SUNDAY AND MONDAY...WITH A LOW TEMPERATURE
BELOW 20 DEGREES. THE LAST TIME THERE WAS A STRETCH OF AT LEAST 3
DAYS IN A ROW WITH LOWS LESS THAN 20 DEGREES IN SEATTLE WAS DECEMBER
1998 WITH 4 DAYS IN A ROW...DECEMBER 19TH THROUGH THE 22ND. FELTON

&&

.HYDROLOGY...RIVER FLOODING IS NOT EXPECTED FOR THE NEXT 7 DAYS.

&&

.AVIATION...DRY NORTHERLY FLOW ALOFT WILL CONTINUE OVER WASHINGTON
TODAY. A WEAK SYSTEM WILL MOVE SOUTH OFF THE COAST TODAY AND
TONIGHT...BRIEFLY TURNING SURFACE FLOW MORE SOUTHERLY. THE AIR MASS
WILL REMAIN COLD AND MOSTLY STABLE. HIGH CLOUDS WILL COVER WESTERN
WASHINGTON AND SOME MID-LEVEL CLOUDS AND SNOW FLURRIES ARE LIKELY
ALONG THE COAST. GENERALLY VFR CONDITIONS ARE EXPECTED.

KSEA...VFR CLEAR OR CIRRUS. SOUTHEAST WINDS THIS MORNING WILL TURN
BACK TO THE NORTHEAST TONIGHT BUT WILL REMAIN LESS THAN 10 KT. CHB

&&

.MARINE...WINDS OVER ALL WATERS WILL STAY BELOW BELOW 20 KT TODAY. A
WEAK WEATHER SYSTEM WILL MOVE SOUTH OFF THE COAST TODAY AND TONIGHT
GIVING MODERATE SOUTHERLY WINDS.

NORTHEAST OUTFLOW WINDS WILL RESUME STARTING TONIGHT. WIND SPEEDS
WILL RISE INTO SMALL CRAFT ADVISORY STRENGTH OVER NORTHERN COASTAL
WATERS FIRST TONIGHT AND SPREAD TO ALL COASTAL ZONES OVERNIGHT. GALE
FORCE WINDS ARE POSSIBLE IN THE NORTHERN INLAND WATERS AND NEAR THE
WEST ENTRANCE LATE TONIGHT THROUGH SATURDAY MORNING AND A GALE WATCH
IS IN EFFECT OVER THOSE ZONES. WINDS WILL EASE BUT STILL REMAIN
MOSTLY NORTHERLY AND OFFSHORE SUNDAY AND MONDAY. CHB

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...NONE.
PZ...GALE WATCH NORTH INNER COAST...WEST ENTRANCE...AND NORTHERN
     INLAND WATERS EARLY FRIDAY MORNING THROUGH SATURDAY MORNING.

&&

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

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
122 PM PST THU DEC 05 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0115 PM     SNOW             3 ESE NEAH BAY          48.27N 124.55W
12/05/2013  M1.5 INCH        CLALLAM            WA   TRAINED SPOTTER

            SPOTTER MEASURED 1.5 INCHES OF SNOW AT SEA LEVEL EAST OF
            NEAH BAY SINCE 930 AM AND ESTIMATED VISIBILITY FROM
            CONTINUING SNOWFALL AT 3/4 MILE. ALSO ESTIMATED 1 INCH OF
            SNOW IN TOWN.

&&

JSMITH