SPC MD 57

SPC MD 57

MD 0057 CONCERNING SNOW SQUALL FOR PORTIONS OF EXTREME NORTHEAST PENNSYLVANIA…FAR EASTERN NEW YORK…MASSACHUSETTS…VERMONT…NEW HAMPSHIRE

MD 0057 Image

Mesoscale Discussion 0057
NWS Storm Prediction Center Norman OK
1039 AM CST Wed Jan 29 2025
Areas affected...portions of extreme northeast Pennsylvania...far
eastern New York...Massachusetts...Vermont...New Hampshire
Concerning...Snow Squall 
Valid 291639Z - 291845Z
SUMMARY...Occasional snow-squall conditions are possible in stronger
portions of a snow band over the next few hours. A rapid onset of
moderate snow, gusty winds, and reduced visibility may all occur.
DISCUSSION...A low-topped, progressive convective snow band has
recently materialized, with a 10 F surface temperature drop,
moderate snowfall rates, and half-mile visibility reductions noted
on surface observations over the past couple of hours. This band is
being driven by a progressive cold front and rapidly ejecting
mid-level trough, which is also preceded by at least partially
clearing skies. 16Z mesoanalysis shows up to 8 C/km low-level lapse
rates downstream of the snow band, suggesting that snow squall
potential may increase this afternoon in stronger convective cells.
Bouts of at least moderate snowfall rates, as well as a 10 F
temperature drop, 25+ kt gusts, and visibility reduced to a quarter
mile, may occur with this band until it moves offshore.
..Squitieri.. 01/29/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...BTV...ALY...BGM...
LAT...LON   41657666 42767392 44517271 45077227 45297141 45007096
            44297103 43157069 42667073 42357092 42067231 41747391
            41617466 41617538 41657666 

Read more

Read More