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ARZ000-OKZ000-TXZ000-210300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 191

NWS STORM PREDICTION CENTER NORMAN OK

110 PM CDT MON MAY 20 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  NORTHWEST ARKANSAS

  CENTRAL AND EASTERN OKLAHOMA

  NORTHWEST TEXAS



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 110 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  NUMEROUS LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 4 INCHES IN DIAMETER POSSIBLE

  NUMEROUS DAMAGING WIND GUSTS TO 70 MPH LIKELY



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 115 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF GROVE

OKLAHOMA TO 40 MILES EAST OF WICHITA FALLS TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU1).



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 189...WW 190...



DISCUSSION...RAPID INTENSE STORM DEVELOPMENT IS EXPECTED DURING THE

NEXT FEW HOURS...BOTH NEAR A STALLED SURFACE FRONT ROUGHLY WEST OF

THE I-35 CORRIDOR...AND NEAR THE PRE-FRONTAL DRYLINE NOSING

NORTHEASTWARD INTO SOUTH CENTRAL OKLAHOMA BY LATE AFTERNOON.

ISOLATED SUPERCELLS ARE LIKELY ALONG THE DRYLINE...WITH THE MOST

PROMINENT TORNADO THREAT...WHICH PROBABLY WILL INCREASE BY EARLY

EVENING AS THE SOUTHERLY LOW-LEVEL JET STRENGTHENS AND ENLARGES

LOW-LEVEL HODOGRAPHS.  ONE OR TWO STRONG TORNADOES MAY NOT BE OUT OF

THE QUESTION. OTHERWISE...LARGE HAIL IS LIKELY...SOME VERY LARGE...

WITH INCREASING DAMAGING WIND POTENTIAL ACROSS EASTERN OKLAHOMA AS

CONVECTION CONSOLIDATES AND EVOLVES INTO AN ORGANIZED CLUSTER.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 25035.





...KERR

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