MD 0249 CONCERNING HEAVY SNOW FOR PARTS OF EASTERN PENNSYLVANIA…NORTHERN NEW JERSEY…EASTERN NEW YORK STATE…WESTERN NEW ENGLAND
Mesoscale Discussion 0249
NWS Storm Prediction Center Norman OK
0753 AM CST Sat Mar 12 2022
Areas affected...Parts of eastern Pennsylvania...northern New
Jersey...eastern New York State...western New England
Concerning...Heavy snow
Valid 121353Z - 121800Z
SUMMARY...A corridor of heavy snow will develop north-northeastward
across the region through 11 AM-1 PM EST, including occasional
hourly rates up to 1-2 inches per hour.
DISCUSSION...As consolidating, amplified mid-level troughing
gradually pivots eastward across the lower Great Lakes and upper
Ohio Valley vicinity, the corridor of strongest lower/mid
tropospheric frontogenetic forcing is forecast to continue to
develop north-northeastward, inland of northern Mid Atlantic coastal
through western New England by 16-18Z. This appears likely to
include a period of lift becoming maximized within the 700-500 mb
layer, where saturating profiles within the dendritic growth layer
will become conducive to heavy snow rates on the order of 1-2 inches
per hour. Although lower levels are still above freezing across
parts of western New England, temperatures will cool in response to
low-level cold advection, as deepening elongated surface low
pressure migrates across the northern Mid Atlantic through southern
New England coastal areas.
..Kerr.. 03/12/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CAR...GYX...BOX...BTV...OKX...ALY...PHI...BGM...
CTP...
LAT...LON 45167148 46216972 43887097 41877323 40607417 39807595
40967597 43077479 44487341 45167148
