Messy mix for Monday

A storm is bringing snow, changing to ice, to the metro DC area today.

It’s a foretaste of things to come for the NYC area. 

The storm will sprinkle us with light snow, but the dry air at the surface will evaporate the snow  before it gets to the ground, until after 5pm.  Steadier snow over night, becoming rain in NYC and along the coast.

The question is how long snow, and more worrisome, ice will last inland.

The further inland, the longer the time when ice falls, as less dense warm air rides over the colder air near the ground, resulting in rain above freezing to ice pellets on the way down.

Stay tuned for updates!

10am update – the Weather Service notes that winds are coming from the northeast sooner than predicted and may help moisten the atmosphere sooner. No snow before 3pm, but perhaps soon after that. By 5pm sunset, steady light snow may be falling. 1 inch in the city and coast before changing to rain; 2 -3 interior areas, with some ice fall from Poughkeepise northward.

12noon update…
NWS is looking to see if snow is breaking out faster or not.
Look for an update on snow amounts early this afternoon.
Here’s the 11am statement…
SNOW IS EXPECTED TO DEVELOP THIS AFTERNOON FROM SOUTHWEST TO
NORTHEAST ACROSS THE REGION. WHILE SNOW MAY BE INITIALLY
LIGHT…IT CAN EASILY REDUCE VISIBILITIES DOWN TO A MILE…AND
WITH ANY BRIEF MODERATE OR HEAVY SNOW…VISIBILITIES WILL REDUCE
TO BELOW A HALF MILE. SOME SLEET WILL MIX IN THIS EVENING.
TEMPERATURES WILL BE COLD ENOUGH FOR SNOW TO ACCUMULATE UP TO A
FEW INCHES ESPECIALLY ON ELEVATED AND UNTREATED SURFACES.

THIS WILL MAKE FOR SLIPPERY CONDITIONS ON UNTREATED SURFACES AS
WELL AS BRIDGES AND OVERPASSES. THIS ALONG WITH REDUCED
VISIBILITIES WILL MAKE TRAVEL HAZARDOUS. IF TRAVELING THIS
AFTERNOON OR EVENING AND ENCOUNTERING THESE CONDITIONS…DRIVE
EXTRA SLOWLY AND PROCEED WITH EXTRA CAUTION.

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