840 WWUS20 KWNS 271744 SEL7 SPC WW 271744 INZ000-KYZ000-MDZ000-OHZ000-PAZ000-WVZ000-LEZ000-280100- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 447 NWS STORM PREDICTION CENTER NORMAN OK 145 PM EDT SUN JUL 27 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF EAST CENTRAL INDIANA NORTHEAST KENTUCKY EXTREME WESTERN MARYLAND OHIO WESTERN PENNSYLVANIA NORTHERN WEST VIRGINIA LAKE ERIE * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 900 PM EDT. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTHWEST OF DAYTON OHIO TO 15 MILES EAST NORTHEAST OF LATROBE PENNSYLVANIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 445... DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE TO INTENSIFY ACROSS MUCH OF OH THIS AFTERNOON AND SPREAD EASTWARD ACROSS THE WATCH. STRONG INSTABILITY AND FAVORABLE SHEAR WILL PROMOTE SUPERCELL STORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS. ISOLATED TORNADOES ARE POSSIBLE IN THE STRONGEST CELLS. 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 28030. ...HART ====================================================================== 839 WWUS40 KWNS 271744 WWP7 TORNADO WATCH PROBABILITIES FOR WT 0447 NWS STORM PREDICTION CENTER NORMAN OK 1242 PM CDT SUN JUL 27 2014 WT 0447 PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 40% PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 20% PROB OF 10 OR MORE SEVERE WIND EVENTS : 60% PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS : 10% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 60% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% && ATTRIBUTE TABLE: MAX HAIL /INCHES/ : 2.0 MAX WIND GUSTS SURFACE /KNOTS/ : 60 MAX TOPS /X 100 FEET/ : 500 MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 28030 PARTICULARLY DANGEROUS SITUATION : NO && FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU7. $$
Posted on: Sun, 27 Jul 2014 23:19:43 +0000
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