

190 

WWUS20 KWNS 182302

SEL6

SPC WW 182302

INZ000-KYZ000-OHZ000-PAZ000-WVZ000-190600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 326

NWS STORM PREDICTION CENTER NORMAN OK

700 PM EDT WED JUN 18 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEASTERN INDIANA

  EXTREME NORTHERN KENTUCKY

  SOUTHERN OHIO

  WESTERN PENNSYLVANIA

  EXTREME NORTHERN WEST VIRGINIA



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 700 PM

  UNTIL 200 AM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES EITHER SIDE OF A LINE FROM 40 MILES WEST SOUTHWEST

OF CINCINNATI OHIO TO 55 MILES EAST SOUTHEAST OF FRANKLIN

PENNSYLVANIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 321...WW 322...WW

323...WW 324...WW 325...



DISCUSSION...MARGINALLY WELL-ORGANIZED BAND OF TSTMS WITH

MESOBETA-SCALE COLD POOLING SHOULD CONTINUE TO MOVE SEWD ACROSS WW

AREA INTO FAVORABLE MOISTURE/THERMAL FIELDS WITH FORCED ASCENT ALONG

ASSOCIATED GUST FRONT.  SOME INCREASE IN ORGANIZATION IS PSBL BEFORE

NOCTURNAL/DIABATIC COOLING SUBSTANTIALLY DESTABILIZES FOREGOING WARM

SECTOR.  DAMAGING GUSTS AND OCNL LARGE HAIL ARE PRIMARY THREATS.

REF SPC MESOSCALE DISCUSSION 1069 FOR MORE INITIAL DETAILS.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 30030.





...EDWARDS

