224
ACUS11 KWNS 262241
SWOMCD
SPC MCD 262241
MEZ000-MAZ000-NHZ000-270015-
MESOSCALE DISCUSSION 1340
NWS STORM PREDICTION CENTER NORMAN OK
0541 PM CDT FRI JUN 26 2026
AREAS AFFECTED...PORTIONS OF NORTHEASTERN MASSACHUSETTS AND
SOUTHEASTERN NEW HAMPSHIRE
CONCERNING...SEVERE THUNDERSTORM WATCH 397...
VALID 262241Z - 270015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 397
CONTINUES.
SUMMARY...THE THREAT FOR ISOLATED LARGE HAIL AND DAMAGING WIND GUSTS
CONTINUES ACROSS PORTIONS OF SEVERE THUNDERSTORM WATCH 397. THIS
THREAT SHOULD GRADUALLY DIMINISH THIS EVENING WITH THE LOSS OF
DIURNAL HEATING AND AS STORMS PROGRESS OFFSHORE.
DISCUSSION...ISOLATED CONVECTION, INCLUDING ONE PERSISTENT
SUPERCELL, HAS CONTINUED TO PROGRESS SOUTHEASTWARD ACROSS PORTIONS
OF NEW ENGLAND AND ALONG A DIFFUSE WARM FRONT OVER THE PAST 1-2
HOURS, WITH SEVERAL REPORTS OF DAMAGING WIND GUSTS AND LARGE HAIL UP
TO GOLF BALL SIZE NOTED. WHILE THE SEVERE THREAT IS EXPECTED TO
GRADUALLY DIMINISH WITH TIME WITH THE LOSS OF DIURNAL HEATING AND AS
STORMS PROGRESS OFFSHORE, ISOLATED LARGE HAIL (WITH PERHAPS ANOTHER
INSTANCE OF LARGE HAIL UP TO 1.5-1.75" IN DIAMETER) AND DAMAGING
WIND GUSTS REMAIN POSSIBLE IN THE MEANTIME OWING TO 500 TO LOCALLY
1000 J/KG MLCAPE, STRONG EFFECTIVE SHEAR OF 50+ KTS, AND ELONGATED
HODOGRAPHS.
..CHALMERS.. 06/26/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...GYX...BOX...
LAT...LON 43387160 43287113 43197071 43097044 42857039 42607057
42517089 42687160 42847203 42987207 43257195 43387160
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
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