Snow Threat Update

RPM 11pm Wednesday Evening

NAM 1am Thursday

GFS 1am Thursday

NWS Snowfall Forecast ending 7am Thursday

The late morning run of our in-house model (RPM) latched on to the idea of a quick-hitting snow burst Wednesday night into early Thursday.  The U.S. models (NAM and GFS) have had the threat for the past few days.  The RPM is moving things through faster, with rain mixing with or changing to snow in Baltimore area between 10pm and 11pm Wednesday evening.  The NAM and GFS are a little slower, with the changeover happening between 11pm and 1am.  All three models scoot the system up to New England before dawn on Thursday.  A fast moving storm with precipitation falling on warm, wet ground means snow accumulations will be limited.  Still, it’s possible for a 1-3″ snow in the colder northwest suburbs.  The rest of Thursday should be sunny, breezy, and chilly.  Stay tuned to WBAL-TV for updates.

Tom Tasselmyer

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