[North of us but merits attention.] URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 351 NWS STORM PREDICTION CENTER NORMAN OK 320 PM EDT SUN JUN 23 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWESTERN MAINE NEW HAMPSHIRE EASTERN VERMONT COASTAL WATERS * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 320 PM UNTIL 1100 PM EDT. * PRIMARY THREATS INCLUDE... SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST SOUTHWEST OF MONTPELIER VERMONT TO 15 MILES SOUTH OF PORTLAND MAINE.FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && DISCUSSION... A GRADUAL CONSOLIDATION OF THUNDERSTORM ACTIVITY INTO A SMALL MESOSCALE CONVECTIVE SYSTEM APPEARS POSSIBLE DURING THE NEXT COUPLE OF HOURS EAST SOUTHEAST OF THE CHAMPLAIN VALLEY.A BELT OF 20-30 KT WEST NORTHWESTERLY DEEP LAYER MEAN FLOW ACROSS THIS REGION WILL CONTRIBUTE TO PROPAGATION ACROSS PARTS OF CENTRAL VERMONT AND NEW HAMPSHIRE... TOWARD SOUTHERN MAINE COASTAL AREAS... WITH A RISK FOR POTENTIALLY DAMAGING WIND GUSTS... PERHAPS SOME HAIL. 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 450. MEAN STORM MOTION VECTOR 29025. ... KERR
Posted on: Sun, 23 Jun 2013 19:36:08 +0000
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