WINTER STORM WARNING

 

Tuesday, January 25, 2011

GFS Total Precipitation

A quick map:  GFS total precip for the storm.  We're well in the 1-inch range which is something along the lines of 7-9 inches of snow equivalent.  We'll lose some (.25?) to slop, some more (.25?) to melting when the changeover happens and that leaves around .50 - .75 of liquid equivalent or around 4-6 inches with the bad snow ratios I expect.  Usually there's a 10 to 1 rule (1 inch of liquid precipitation is 10 inches of snow).  If the snow is exceptionally dry (cold atmosphere) the ratios can go up to 15 or 20 to 1.  With the borderline atmosphere tomorrow, I'd expect less than 10 to 1.

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