

440 

WWUS20 KWNS 262349

SEL5

SPC WW 262349

NHZ000-NYZ000-VTZ000-270600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 225

NWS STORM PREDICTION CENTER NORMAN OK

745 PM EDT WED MAY 26 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN NEW HAMPSHIRE

       NORTHEASTERN NEW YORK

       MUCH OF VERMONT



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 745 PM

UNTIL 200 AM EDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF

SARANAC LAKE NEW YORK TO 30 MILES WEST SOUTHWEST OF KEENE NEW

HAMPSHIRE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 223...WW 224...



DISCUSSION...TSTMS ARE NOW FORMING ALONG AND W OF NNW/SSE BACK-DOOR

COLD FRONT FROM FAR SRN QUEBEC SSE INTO THE UPR CT RVR VLY.  THESE

STORMS SHOULD CONTINUE TO MOVE AND POSSIBLY DEVELOP FARTHER SSE INTO

WRN NEW ENGLAND AND NERN NY AS REGION IS GLANCED UP UPR IMPULSE

MOVING SWD AROUND MARITIMES LOW.  GIVEN DEGREE SFC-BASED CAPE /AOA

2000 J PER KG WITH STEEP LOW LVL LAPSE RATES/...AND DEEP/MODERATE

UNIDIRECTIONAL NLY FLOW ALOFT...SETUP MAY SUPPORT MULTICELL CLUSTERS

WITH A GOOD CHANCE FOR SVR HAIL.  SMALL BOWING SEGMENTS WITH DMGG

WIND MAY ALSO OCCUR.  THE STORMS SHOULD WEAKEN LATER THIS EVE AS CIN

INCREASES.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 35025.





...CORFIDI

