SPC MD 23

MD 0023 CONCERNING HEAVY SNOW FOR NORTHERN NJ INTO SOUTHWEST NEW ENGLAND
        
MD 0023 Image

Mesoscale Discussion 0023
NWS Storm Prediction Center Norman OK
0855 AM CST Sat Jan 17 2026

Areas affected...northern NJ into southwest New England

Concerning...Heavy snow 

Valid 171455Z - 171800Z

SUMMARY...Transient heavy snow is expected to shift northeastward in
the Northeast to southwest New England through early afternoon.
Rates should briefly reach 1 inch per hour before waning.

DISCUSSION...A confined band of moderate to heavy snow with several
half to quarter-mile visibilities ongoing across mainly southeast
PA, north-northwest of the Philadelphia Metro Area, in association
with a shortwave impulse progressing northeastward across the
Northeast. 12Z observed and forecast soundings indicate the
dendritic growth zone is centered between 575-650 mb. Ascent within
and below this level appears likely to peak through about 18Z, which
should favor snowfall rates around 1 in/hr. This should be transient
at any one location as the burst of heavy snow shifts northeastward
followed by drying in the dendritic growth layer.

..Grams.. 01/17/2026

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

ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...

LAT...LON   40787433 40517507 40807529 41777433 42797315 43027244
            42917200 42527218 42057256 41367348 40787433 

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