SEL3 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 313 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT TUE MAY 29 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EXTREME WESTERN MASSACHUSETTS EASTERN NEW YORK VERMONT EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL 900 PM EDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH OF GLENS FALLS NEW YORK TO 40 MILES NORTH NORTHWEST OF BURLINGTON VERMONT. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3). REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. OTHER WATCH INFORMATION...CONTINUE...WW 312... DISCUSSION...STORMS ARE EXPECTED TO DEVELOP WITHIN AN ENHANCED CU/TCU FIELD WITHIN THE NEXT 1-2 HRS...AND CONTINUED HEATING OCCURS AND LARGE SCALE ASCENT APPROACHES FROM THE WEST. A VERY UNSTABLE ENVIRONMENT WITH MUCAPE OF 2000-3000 J/KG AND 30-40 KT DEEP LAYER SHEAR WILL PROMOTE SEVERE STORMS INCLUDING A FEW SUPERCELLS WITH POTENTIAL TO PRODUCE LARGE HAIL AND DAMAGING WINDS. SOUTHERLY LOW LEVEL WINDS OVER THE HUDSON VALLEY AND EAST INTO VT WILL ALSO ENHANCE LOW LEVEL SHEAR SUGGESTING THREAT FOR A FEW TORNADOES THIS AFTERNOON. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24030.
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