SPC MD 2140



MD 2140 CONCERNING SEVERE THUNDERSTORM WATCH 691… FOR FAR SOUTHERN NEW YORK…LONG ISLAND…WESTERN MASSACHUSETTS AND CONNECTICUT

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Mesoscale Discussion 2140
NWS Storm Prediction Center Norman OK
1150 PM CDT Thu Oct 31 2019

Areas affected...far southern New York...Long Island...western
Massachusetts and Connecticut

Concerning...Severe Thunderstorm Watch 691...

Valid 010450Z - 010615Z

The severe weather threat for Severe Thunderstorm Watch 691
continues.

SUMMARY...Strong to locally severe gusts may persist into parts of
western Massachusetts and Connecticut, but additional watches are
not expected.

DISCUSSION...A strongly forced line of storms continues to move
rapidly east across NJ and far southern NY, and will affect parts of
Long Island as well as western MA and CT. Surface observations
indicate relatively cool surface air ahead of the line, with little
if any MUCAPE present. 

That said, surface analysis shows an impressive rise/fall couplet,
with this line of higher reflectivity. Given 70 kt southerly winds
not too far off the surface, locally damaging wind gusts may occur,
even if the precipitation lacks lightning.

..Jewell.. 11/01/2019

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

ATTN...WFO...BOX...OKX...ALY...PHI...AKQ...

LAT...LON   40057358 39477415 38957457 38237497 37907523 38027560
            38237562 38807524 39867463 40447430 40867412 41437413
            41947404 42347370 42517293 42307260 41667256 40837270
            40057358 

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