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Weather alert: Forecasters don’t know how much but talking Seattle snow Saturday

November 2010 (Image: Melissa Ettman via Flickr)

November 2010 (Image: Melissa Ettman via Flickr)

UPDATE 11/29/14Just enough Saturday morning snow for a nice walk on Capitol Hill

While it seems unlikely to live up to the surprise of #snomg Thanksgiving week 2010, Saturday might bring snow to Capitol Hill. Here’s a “Special Weather Statement” for the region from the NWS:

WARM AND WET WEATHER WILL GIVE WAY TO MUCH COLDER CONDITIONS AND POSSIBLE LOWLAND SNOW LATE FRIDAY NIGHT INTO SATURDAY……COLD AND WINDY CONDITIONS ARE EXPECTED TO DEVELOP OVER THE NORTH INTERIOR LATE FRIDAY NIGHT INTO SATURDAY…

BIG CHANGES IN THE WEATHER WILL BEGIN TO TAKE PLACE ON FRIDAY MORNING AS A STRONG COLD FRONT MOVES SOUTH ACROSS THE REGION.THIS FRONT WILL BE ACCOMPANIED BY LOCALLY HEAVY RAINFALL AND WINDY CONDITIONS. TEMPERATURES WILL START OFF MILD IN THE EARLY MORNING HOURS…IN THE LOWER 50S IN MOST AREAS…BUT WILL FALL THROUGH THE40S DURING THE AFTERNOON HOURS AND INTO THE 30S FRIDAY EVENING.

A PUGET SOUND CONVERGENCE ZONE IS EXPECTED TO FORM FRIDAY EVENING.WITH TEMPERATURES COOLING INTO THE LOWER TO MID 30S LATER FRIDAY NIGHT…SOME OF THE CONVERGENCE ZONE PRECIPITATION MAY FALL ASSNOW. THIS WILL AFFECT MAINLY SNOHOMISH COUNTY AND NORTH KING COUNTY.

THEN A MODIFIED ARCTIC FRONT WILL MOVE SOUTH ACROSS THE INTERIOR LOWLANDS LATE FRIDAY NIGHT INTO EARLY SATURDAY…

GENERATING A MORE WIDESPREAD LIGHT SNOW. MODIFIED ARCTIC AIR WILL ALSO FLOW WEST THROUGH THE STRAIT OF JUAN DE FUCA. SNOW LEVELS WILL FALL BELOW1000 FEET FRIDAY NIGHT AND TO NEAR SEA LEVEL SATURDAY MORNING. ITIS TOO EARLY TO TELL HOW MUCH SNOW WILL FALL OVER THE INTERIOR LOWLANDS OR ALONG THE STRAIT OF JUAN DE FUCA LATE FRIDAY NIGHT OR SATURDAY MORNING. MOST AREAS WILL LIKELY SEE LIGHT SNOWFALL AMOUNTS…MAINLY LESS THAN AN INCH…BUT SOME WEATHER FORECAST MODELS SHOW UP TO A FEW INCHES IN THE INTERIOR FROM SEATTLE INTO THE NORTHERN INTERIOR…AND ALONG THE STRAIT OF JUAN DE FUCA.

WINDY CONDITIONS WILL DEVELOP LATE FRIDAY NIGHT INTO SATURDAY OVER THE SAN JUAN ISLANDS…AND COASTAL PORTIONS OF WHATCOM AND SKAGIT COUNTY. THESE AREAS MAY SEE NORTHEAST WINDS FLOWING OUT OF THE FRASER RIVER VALLEY INCREASE TO 20 TO 40 MPH WITH GUSTS TO 50 TO 55MPH. THE WINDY CONDITIONS WILL BE ACCOMPANIED BY TEMPERATURES INTHE 20S…WHICH WOULD PUT WIND CHILL VALUES INTO THE TEENS.

STAY TUNED TO THE LATEST UPDATES FROM THE NATIONA LWEATHER SERVICE IN SEATTLE.

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3 thoughts on “Weather alert: Forecasters don’t know how much but talking Seattle snow Saturday

  1. The “Snowiest Winter” in the greater Seattle area occurred from November 1968 to March 1969 as a total of 67.5 inches fell in the region. One storm in 1968 dropped 13 inches of snow at Sea-Tac. That was a La Niña year and the last time Western Washington saw a 70 degree day in November.

  2. Pingback: Just enough Saturday morning snow for a nice walk on Capitol Hill | CHS Capitol Hill Seattle