Wintry Mix On Wednesday

Arctic covers Maryland Monday Morning

Arctic air retreating Monday evening

It is hard to believe that just 48 hours after the coldest temperatures of the winter a storm system will arrive with a messy wintry mix of precipitation instead of just pure snow.  Monday evening surface maps show the arctic air retreating to the northeast as our mid week storm develops near the gulf coast.

RPM 8am Wednesday, 26 Jan 2011...Wintry mix across Maryland

RPM 6pm Wednesday 26 Jan 2011...Wintry mix changing to snow

By the time the storm is on the Carolina coast Wednesday morning, temperatures around here will be just under freezing at ground level and a couple degrees warmer just a few thousand feet above the surface.  That will probably produce a mix of snow and sleet at the storm’s onset with snow, sleet, freezing rain, and rain falling at various times throughout the day Wednesday.  The mixed nature of the precipitation will limit snow accumulations during the daylight hours of Wednesday, but our in-house RPM model is showing the air mass turning colder as the storm intensifies and begins to pull away Wednesday evening.  The arrival of the colder air will probably mean the mix will change to all snow Wednesday night with several inches possible before the storm moves farther away from the region early Thursday morning.

With the Baltimore area positioned right on the rain/snow line, adjustments to the forecast are likely as the system gets closer.  Stay tuned for further updates on Tuesday.

Tom Tasselmyer

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One Response

  1. […] Wintry Mix For Wednesday. It is hard to believe that just 48 hours after the coldest temperatures of the winter a storm system will arrive with a messy wintry mix of precipitation instead of just pure snow.  Monday evening surface maps show the arctic air retreating to the northeast as our mid week storm develops near the gulf coast. […]

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