Winter Storm Watch for Seattle and all of western WA
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The new GFS is VERY wet for Seattle for late Saturday night and Sunday morning.
Here is the map for Sunday morning at 10 a.m....
http://www.nco.ncep.noaa.gov/pmb/nwprod/analysis/namer/gfs/18/images/gfs_ten_072m.gif
Interesting. Still looks like massive southwesterly flow with warm air flooding in from the Pacific. But cold air is dense and hard to move.
Here is the map for Sunday morning at 10 a.m....
http://www.nco.ncep.noaa.gov/pmb/nwprod/analysis/namer/gfs/18/images/gfs_ten_072m.gif
Interesting. Still looks like massive southwesterly flow with warm air flooding in from the Pacific. But cold air is dense and hard to move.
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I'm dreading this pineapple express...ski resorts just opened, and they'll have to shut down again. I haven't been snowboarding yet!!! TT-SEA, what is your thought about the possible over-running event Saturday night?! Will it be cold enough? I want someone who is realistic and can actually read the models correctly. Is there the possibility?!
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And it goes on and on...
Here is the 48-hour precipitation totals immediately following the 60-hour period above (Tuesday 10 p.m. through Thursday 10 p.m.)
Add them together and you have 108-hour totals (Sunday morning through Thursday evening).
Amazing. It is going to be VERY warm and VERY wet!!
Here is the 48-hour precipitation totals immediately following the 60-hour period above (Tuesday 10 p.m. through Thursday 10 p.m.)

Add them together and you have 108-hour totals (Sunday morning through Thursday evening).
Amazing. It is going to be VERY warm and VERY wet!!
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Saturday Night is really starting to look interesting. I agree with Anthony, that arctic air could very well make it over the Cascades if we get a mountain wave event. That would guarentee at least some snow Saturday Night as an overrunning event, then it could possibly turn over to freezing rain and then to plain old rain from Sunday onward through all of next week. Will be interesting to see if the latest NWS Forecast Discussion takes note of this.
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