White Out Conditions Possible this Evening in Snow Squalls

The HRRR (High Resolution Rapid Refresh) model continues to show the arctic front passing through our area accompanied by a squall line of heavy snow between 4 and 8 PM. 

Latest HRRR (High Resolution Rapid Refresh) Model Showing Heavy Snow Squall

Latest HRRR (High Resolution Rapid Refresh) Model Showing Heavy Snow Squall crossing the Washington Metropolitan Area at 6 PM; Image courtesy Weatherbell.com

Latest HRRR (High Resolution Rapid Refresh) Model Showing Heavy Snow Squall

Latest HRRR (High Resolution Rapid Refresh) Model Showing Snow Showers and Squalls at 7 PM; Image courtesy Weatherbell.com

A High Wind Warning goes into effect at 6PM for the entire Washington Area. The combination of snow showers and gusty winds will cause white out conditions at times. Snow will eventually begin accumulating on roadways as the temperatures plummet into the teens.

Latest Snowfall Accumulation Forecasts from several models:

Latest WPC (Weather Prediction Center) Snowfall Forecast (50 percentile)

Latest WPC (Weather Prediction Center) Snowfall Forecast – 50 percentile map: 50% chance of receiving this amount of snow with a 50% chance of receiving more.

The next image is from the North American Model (NAM).  Notice that the NAM model depicts some locations receiving a trace of snow and others picking up well over 2″. The snow showers tonight will behave more like scattered thunderstorms … with some areas getting nailed with heavy snow and others getting a few flurries… this is why some locations will pick up 2 to 3″ and other locations may only pick up a dusting.

Latest North American Model (NAM) Snowfall Forecast

Latest North American Model (NAM) Snowfall Forecast

Prepare now for the possibility of losing your power this evening. Temperatuers will tuble into the single digits with wind chills ranging between 15 and 30 below zero!  Wind Chill Warnings and Advisories have been issued for the entire Washington Region as the threat of hypothermia and frostbite are high in these severe winter conditions.

*In regards to next Tuesday, the GFS continues to show a coastal storm dropping some accumulating snow across our region. However, the European model keeps most of the snow well out to sea.  Hopefully the models will begin to consolidate on a solution as we head into Sunday afternoon. Updates to come.*

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