165
ACUS11 KWNS 221856
SWOMCD
SPC MCD 221856
PAZ000-MDZ000-WVZ000-222300-

Mesoscale Discussion 2241
NWS Storm Prediction Center Norman OK
1256 PM CST Fri Nov 22 2024

Areas affected...the higher terrain across western
Pennsylvania...northern West Virginia...and far western Maryland.

Concerning...Heavy snow

Valid 221856Z - 222300Z

SUMMARY...Snowfall rates of 1 to 2 inches per hour this afternoon
and evening.

DISCUSSION...Snowfall rates have increased across the central
Appalachians in western Pennsylvania, northern West Virginia, and
far western Maryland as upslope flow strengthens and temperatures
cool aloft. The strongest west-northwesterly flow (45 to 50 knots)
will persist through 06Z before weakening. Snowfall rates of 1 to 2
inches per hour are expected through much of this period. Some snow
is expected at lower elevation/valley locations, but a marginal
thermodynamic environment should limit snowfall accumulation rates
at these lower elevations.

In addition, some blizzard conditions are possible at the highest
peaks where 50+ knots of winds are occurring and expected to
continue through the overnight period.

..Bentley.. 11/22/2024

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

ATTN...WFO...CTP...LWX...PBZ...RLX...

LAT...LON   39727991 40497949 41007925 41257897 41227864 41047843
            40467856 39697910 39297940 39077956 39017980 39078010
            39208025 39727991