Winter Weather Advisory issued December 25 at 7:49PM EST until December 27 at 12:00AM EST by NWS Baltimore MD/Washington DC
...A MIXTURE OF FREEZING RAIN AND SLEET TO OVERSPREAD AREAS NORTH OF
I-66/U.S. 50 ON FRIDAY...
.As high pressure builds across Quebec, a steady stream of cold air
will funnel southward into the Mid-Atlantic region. At the same
time, moisture will overrun a frontal boundary across the central
Appalachians down into the Carolinas. As milder air will settle
above the sub-freezing surface layer, a wintry mix consisting of
freezing rain and sleet is likely over portions of the area. Travel
impacts are likely where the wintry mix falls.
WHAT: Mixed precipitation expected. Total snow and sleet
accumulations up to one inch and ice accumulations around one
tenth of an inch, with closer to a trace to a few hundredths of an
inch to the south of I-70.
WHERE: Portions of central, north-central, and northern Maryland
and northern Virginia.
WHEN: From noon Friday to midnight EST Friday Night.
IMPACTS: Plan on slippery road conditions. The hazardous
conditions will impact the Friday evening commute.
ADDITIONAL DETAILS: Precipitation is likely to overspread the
area by midday Friday in the form of sleet or freezing rain.
Freezing rain with some sleet mixing in will continue through the
afternoon and evening. A bit more sleet can be expected closer to
the Maryland-Pennsylvania border. Through the day, temperatures
are expected to remain close to 32 degrees. Precipitation exits
off to the northeast with some light drizzle or freezing drizzle
possibly lingering into the early overnight hours.
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Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.