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MESOSCALE DISCUSSION 1682
NWS STORM PREDICTION CENTER NORMAN OK
0537 PM CDT SUN JUL 26 2009
AREAS AFFECTED...ERN PA...NRN NJ...SERN NY THROUGH SRN NEW ENGLAND
CONCERNING...SEVERE THUNDERSTORM WATCH 626...
VALID 262237Z - 270030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 626
CONTINUES.
THREAT FOR MAINLY ISOLATED DAMAGING WIND AND LARGE HAIL EXPECTED TO
PERSIST UNTIL AROUND 02Z.
OBJECTIVE ANALYSIS SHOWS ZONE OF MODERATE /1500 J/KG/ MLCAPE ALONG
THETA-E AXIS NEAR AND JUST INLAND FROM THE COAST FROM ERN PA...NJ
SERN NY AND INTO SRN NEW ENGLAND. STORMS SHOULD PERSIST IN WEAKLY
CAPPED WARM SECTOR NEXT 2-3 HRS WHERE SWLY 35-45 KT UNIDIRECTIONAL
BULK SHEAR WILL PROMOTE SUPERCELL STRUCTURES AND BOWING SEGMENTS.
ACTIVITY HAS LIKELY PEAKED IN INTENSITY WITH A GRADUAL DECREASE
EXPECTED AS THE BOUNDARY LAYER STABILIZES AFTER SUNSET.
..DIAL.. 07/26/2009
ATTN...WFO...BOX...OKX...ALY...PHI...BGM...CTP...
LAT...LON 41457125 40827335 40377396 39907450 39807543 39887643
40777553 42317399 42767208 42317091 41457125
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