Winter Storm Threat: Jan 31 – Feb 2

The strength of the cold air damming will be a big player in determining where the different areas set up. Based on recent guidance and trends, I’ve come up with the following maps depicting the first event (with light precip. totals over most of the region) and for the second event (which will have QPF in the 0.4-0.8″ range for the most part in MD/North VA and 1″+ QPF possible in PA):

 
Please note the word MOSTLY in the mixed precipitation and rain categories. This indicates that these areas will fluctuate a bit during the events. Some mixed precipitation is also possible in the snow areas (in the 1-2″ contour and maybe even in the southern parts of the 2-4″ contour).


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