Mid Day Thursday Storm Update

The very large and complex storm system that moved into the area yesterday will continue to have an impact on the local weather through Friday. The late morning satellite image below shows the scope of the storm.

latestNASA Enhanced Satellite Image

The east flank of the storm is drawing in considerable moisture from the Atlantic and Gulf and the north and west flank is pulling cold air into the mix. Check out the surface map below for a detailed look at the storm’s profile.

namussfcbwNOAA Surface Map, Thursday Morning

Temperatures have dropped roughly 20 degrees since Wednesday in the Baltimore metro area but readings remain above freezing so rain will be the main feature for today. During the overnight hours and on Friday the storm will move northeastward and colder air will filter in. As a result a wintry mix will begin to move in from the west. Below is the forecast map for Friday morning.

96fwbgusNOAA Surface Forecast Map For Friday Morning

Note the purple dashed line extending from west of the low pressure center to west of Baltimore. This is the predicted rain/snow line. This line should move farther east as the storm pulls away from the area. At the moment it appears that the Baltimore/Washington metro areas will miss out on any major snow accumulation with this storm but the likelihood of a combination of a rain/snow mix changing to a period of snowfall on Friday would be sufficient to snarl traffic.

All of this is subject to change of course if the storm decides to behave badly so check out the progress of the storm with Tom tonight at 5, 6 and 11 pm.

John Collins


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