

202 

WWUS20 KWNS 310152

SEL8

SPC WW 310152

ARZ000-MOZ000-OKZ000-310900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 258

NWS STORM PREDICTION CENTER NORMAN OK

845 PM CDT THU MAY 30 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND NORTHERN ARKANSAS

  MISSOURI BOOTHEEL

  EASTERN OKLAHOMA



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 845 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 110 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHEAST OF

FLIPPIN ARKANSAS TO 55 MILES WEST OF MONTICELLO ARKANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 252...WW 253...WW

255...WW 256...WW 257...



DISCUSSION...IN THE PRESENCE OF CONTINUING LOWER/MID TROPOSPHERIC

WARM ADVECTION BENEATH AT LEAST WEAKLY DIVERGENT UPPER FLOW...STRONG

LOW-LEVEL AND DEEP LAYER SHEAR WILL REMAIN SUPPORTIVE OF ORGANIZED

VIGOROUS STORM DEVELOPMENT ACROSS PARTS OF THE OZARK PLATEAU AND

ADJACENT SOUTHERN PLAINS/MISSISSIPPI VALLEY INTO THE OVERNIGHT

HOURS.  CAPE REMAINS SIZABLE AND CONVECTION MAY CONTINUE TO INCLUDE

DISCRETE SUPERCELLS CAPABLE OF PRODUCING LARGE HAIL AND THE RISK FOR

TORNADOES.



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.





...KERR

