Travel Nearly Impossible Thursday as High-Impact Winter Storm Blasts DC Area

Latest Snow and Sleet Accumulation Potential Map

This will be a high-impact winter storm with a crippling sleet and/or freezing rain event along and east of Interstate 95.  For those of you in the 6 to 10″ area of my map below — this is mainly a snow event .  Elsewhere, precipitation will begin as a period of accumulating snow before changing to sleet  and/or freezing rain.

The million dollar question remains whether we see mostly sleet (ice pellets) or freezing rain (liquid that falls and freezes on everything).

Ice Accumulations from Freezing Rain could be Crippling along Interstate 95

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Another Wintry Mess on Thursday However Snowfall Accumulation Amounts Remain Uncertain

Thursday is looking like a mess across the DC Region as another potent, moisture-rich, winter storm moves our way.  All of the forecast models start the DC area with accumulating snow Wednesday night through Thursday morning before a change over to either sleet or freezing rain occurs. There is the potential for significant accumulations of snow, sleet and freezing rain.

GFS Ensemble (American) showing 30 ensembles (opinions) for snowfall potential:

Next up is the Canadian ensemble model which shows quite a spread in snowfall accumulation:

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Tuesday Review of the Forecast Models

The latest GFS deterministic model (image below, courtesy WxBell)  shows snow developing Wednesday evening and continuing through Friday morning.

The next image is the GFS ensemble blend showing potential snowfall accumulations Wednesday through Friday.

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