MD 2146 CONCERNING SEVERE POTENTIAL…WATCH POSSIBLE FOR SOUTHERN NEW ENGLAND/LONG ISLAND
Mesoscale Discussion 2146
NWS Storm Prediction Center Norman OK
0300 PM CDT Wed Sep 13 2023
Areas affected...southern New England/Long Island
Concerning...Severe potential...Watch possible
Valid 132000Z - 132130Z
Probability of Watch Issuance...40 percent
SUMMARY...Severe-weather potential with isolated/strong storms will
exist for the next few hours across parts of southern New England
and adjacent Long Island.
DISCUSSION...Latest radar loop shows convection redeveloping in an
isolated manner across Connecticut and the Long Island Vicinity,
within an axis of 500 to 1000 J/kg mixed-layer cape across this
area. The most substantial storm at this time is occurring over
Long Island Sound, exhibiting supercell characteristics. Another
strong storm is evolving over Windham County in northeastern
Connecticut, and will move into northern Rhode Island shortly.
Overall, with ample instability existing within an axis just ahead
of the cold front, and a wind profile -- per the KBOX WSR-88D VWP --
that reveals veering/increasing flow with height supporting
organized/rotating updrafts, severe risk will be possible locally,
through about sunset. While gusty outflow winds will likely be the
main risk, marginal hail or even a brief tornado could also occur.
..Goss/Guyer.. 09/13/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BOX...OKX...
LAT...LON 40677342 41247298 41977188 42417076 42006976 41336963
40567247 40677342
