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Source: US National Oceanic and Atmospheric Administration

Mesoscale Discussion 763

Mesoscale Discussion 0763
NWS Storm Prediction Center Norman OK
0701 PM CDT Fri May 29 2020

Areas affected…much of the Northeast

Concerning…Severe Thunderstorm Watch 234…235…

Valid 300001Z – 300200Z

The severe weather threat for Severe Thunderstorm Watch 234, 235

SUMMARY…While isolated strong wind gusts or marginal hail remains
possible this evening, overall trends suggest additional watches
will not be needed.

DISCUSSION…The strongest storms currently exist over northern VT
and western ME where the air mass has not yet overturned, and are
near the instability axis. Other storms over southern NY into
eastern PA are east of the instability axis and may encounter larger
convective inhibition over the next 1-2 hours as they continue east.

To the west, a secondary line of storms from central NY into PA has
formed along the cold front, but will encounter areas of outflow
from the earlier storms. Favorable large-scale lift may still
support a few strong to marginally severe storms where they
encounter remaining pockets of instability.

One area of stronger instability remains from southeast PA into MD,
where PWAT values are over 1.80″. Additional isolated strong storms
cannot be ruled out in this area. However, drying will occur over
the next several hours as winds above the surface veer.

..Jewell.. 05/30/2020

…Please see for graphic product…


LAT…LON 41917294 40867397 39467521 39377615 39467700 39777771
40587784 42047658 43037557 44057422 45067337 45417137
45796943 45536911 44737003 43137185 41917294

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