SPC MD 18



MD 0018 CONCERNING FREEZING RAIN FOR FAR SOUTHEAST WV…PORTIONS OF SOUTHERN VA AND WESTERN NC

MD 0018 Image

Mesoscale Discussion 0018
NWS Storm Prediction Center Norman OK
0915 PM CST Sat Jan 12 2019

Areas affected...far southeast WV...portions of southern VA and
western NC

Concerning...Freezing rain 

Valid 130315Z - 130815Z

SUMMARY...Light to moderate freezing rain, possibly mixed with snow
and sleet at times, will continue for much of the overnight hours.
Freezing rain rates near 0.05 inches per 3 hours will result in
hazardous conditions as ice continues to accumulate into the early
morning hours.

DISCUSSION...Light to moderate freezing rain is ongoing across
portions of the central Appalachians this evening. Precipitation
rates have increased as 850mb frontogenesis has strengthened over
the area ahead of a shortwave impulse now ejecting across western
TN. In the low levels, surface temperatures are ranging from around
28 to 32 degrees F. The 850mb freezing line is draped across far
southern VA, indicating snow and possibly a snow/sleet mix is
possible across much of northern into central VA, transitioning to
freezing rain further south. 

A warm nose of 0.2-3.0 C has been noted in 00z regional RAOBs as
well as in latest RAP forecast soundings. As a result, the
predominant precipitation type should remain freezing rain, though
some sleet could mix in and/or rain where surface temperatures hover
near 32-33 degrees. These conditions, with freezing rain rates near
0.05 inches per 3 hours, should persist for much of the overnight
hours, leading to hazardous conditions as ice continues to
accumulate.

..Leitman.. 01/13/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...AKQ...RAH...RNK...RLX...GSP...MRX...

LAT...LON   36257906 35708031 35248156 35218226 35218256 35358272
            35598262 36848161 37718112 37618065 37298039 37028040
            36838016 36867961 37137905 37377844 37367793 37207774
            36807801 36257906 

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