UPDATE: ‘Winter Storm Watch’ Says Up To 15″ Of Snow Possible Over Next 2 Days


Des Moines Marina in the snow. Photo by Kay Storhoff.

UPDATE 3:40 p.m., 1/16/12: The National Weather Service issued a revised ‘Winter Storm Watch‘ Monday afternoon, calling for two more rounds of snow – up to 3 inches through Tuesday, and up to 14 inches through Wednesday.

Also, noted UW Meteorologist Cliff Mass warned on his blog Monday afternoon that this could be “the biggest snowstorm in years”:

“The bottom line is that there is a serious threat on Wednesday of 8-15 inches of snow over the region, with a minimal turn over to rain. The biggest snowstorm in years. Anyway, before anyone goes out and buys a snowblower, lets see what tonight’s runs show. If they continue this trend then Slushmageddon might be replaced by Snowmageddon. In almost any conceivable case, Wednesday morning is going to be very problematic for travel…I suspect there will be a lot of school cancellations and the like.

The main roads around Seattle are in very good shape now, but the Wednesday event could dwarf the weekend snow.”

As always, we encourage our Readers to stock up and be prepared to hunker down to ride this system out. Oh, and don’t forget to actually enjoy the snow!

We’ll keep updating the blog as we learn of any changes from the weather peeps; here’s the latest warning:

…WINTER STORM WATCH REMAINS IN EFFECT FROM MIDNIGHT PST TONIGHT THROUGH TUESDAY AFTERNOON… …WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY EVENING…

* SOME AFFECTED LOCATIONS…SEATTLE…TACOMA…BREMERTON… SHELTON.

* TIMING…SNOW ACCUMULATIONS ARE POSSIBLE TONIGHT THROUGH TUESDAY AS COOLER UNSTABLE AIR CONTINUES OVER THE AREA. LOCAL ACCUMULATIONS UP TO 3 INCHES ARE POSSIBLE. A MUCH MORE SIGNIFICANT WINTER STORM IS LIKELY LATE TUESDAY NIGHT THROUGH WEDNESDAY OR WEDNESDAY NIGHT. SNOW WITH THIS SYSTEM WILL BE WIDESPREAD AND HEAVY.

* SNOW ACCUMULATIONS…AT THIS TIME UP TO 3 INCHES ARE POSSIBLE ON TUESDAY. TEMPERATURES WILL REMAIN STEADY OR GRADUALLY FALL DURING THE AFTERNOON HOURS…SO ROADWAYS MAY FREEZE. A MUCH MORE SIGNIFICANT WINTER STORM IS LIKELY LATE TUESDAY NIGHT THROUGH WEDNESDAY EVENING. WEDNESDAYS STORM MAY BRING 6 TO 14 INCHES OF SNOW.

* MAIN IMPACT…EXTREME TRAVEL DIFFICULTIES ARE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WINTER WEATHER. IF YOU MUST TRAVEL IN THE WATCH AREA…CARRY AN EXTRA FLASHLIGHT…FOOD…WATER…AND BLANKETS IN CASE OF EMERGENCY.

Here’s this week’s forecast:

M.L.King Day: Scattered snow showers. Cloudy, with a high near 36. South southwest wind around 14 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than one inch possible.

Tonight: Snow showers likely, mainly after 10pm. Cloudy, with a low around 32. South southwest wind between 6 and 11 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Tuesday: Snow showers. High near 35. South southwest wind 8 to 11 mph becoming northeast. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night: Snow. Low around 28. West wind 5 to 9 mph becoming north northeast. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Wednesday: Snow. The snow could be heavy at times. High near 34. Northeast wind around 14 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Wednesday Night: Rain and snow, becoming all rain after 10pm. Snow level 600 feet. Low around 32. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday: Rain. High near 46. Chance of precipitation is 100%.

Thursday Night: Rain. Cloudy, with a low around 39.

Friday: Rain. Cloudy, with a high near 44.

Friday Night: Rain. Cloudy, with a low around 40.

Saturday: Rain. Cloudy, with a high near 44.

Saturday Night: Rain. Cloudy, with a low around 35.

Sunday: Rain. Cloudy, with a high near 42.

Sunday Night: Rain. Cloudy, with a low around 38.

Monday: Rain. Cloudy, with a high near 45.


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