Squall Line this Evening Ahead of ‘Arctic Blast’

The image above (courtesy Tropical Tidbits) is from the latest North American High-Resolution forecast model. Notice the yellow line of heavy rain moving through the DC Region between 00z (8pm) and 02z (10pm) this evening. This represents the actual cold front which will be accompanied by brief torrential rain and winds gusting in excess of 45 to 50mph.

High temperatures on Saturday will range from the low to middle 40s in our western zones to the upper 40s in downtown Washington… more typical of mid January than early May.

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Heavy Snow Tuesday Evening & Flash Freeze Wednesday Morning

An arctic front will rapidly approach the Washington Area on Tuesday evening accompanied by a period of heavy snow squalls that will taper off and end as flurries.  Visibility will rapidly decrease Tuesday evening during the heavier snow with one to three inches of accumulation possible. Behind the arctic front temperatures will plunge into the teens with a flash freeze likely across area roadways causing widespread delays Wednesday morning.

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