

673 

WWUS20 KWNS 270225

SEL6

SPC WW 270225

CTZ000-MAZ000-NYZ000-RIZ000-CWZ000-270800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 226

NWS STORM PREDICTION CENTER NORMAN OK

1025 PM EDT WED MAY 26 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       MUCH OF MASSACHUSETTS

       SOUTHEASTERN NEW YORK

       RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1025 PM

UNTIL 400 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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF

PITTSFIELD MASSACHUSETTS TO 15 MILES SOUTH SOUTHWEST OF GROTON

CONNECTICUT.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...WW 225...



DISCUSSION...VT MCS EXPECTED TO CONTINUE SSE AT 30-35 KTS...WITH

EMBEDDED SUSTAINED STORMS...BRIEFLY ROTATING STRUCTURES...AND BOWING

SEGMENTS.  ADDITIONAL STORMS MAY CONTINUE TO FORM IN SLIGHTLY

CONFLUENT...WARM WSWLY LOW LVL FLOW ALONG AND W OF SEA BREEZE

BOUNDARY IN ERN MA.  STEEP LOW TO MID LVL LAPSE RATES ABOVE SHALLOW

NOCTURNAL INVERSION...STRENGTHENING UNIDIRECTIONAL NNW FLOW

ALOFT...AND UPLIFT ALONG MCS COLD POOL TOGETHER SUGGEST A CONTINUED

RISK FOR SVR HAIL/WIND SWD INTO SRN NEW ENGLAND...AND TO POSSIBLY

LONG ISLAND SOUND...THROUGH EARLY THU.



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 35035.





...CORFIDI

