

588 

WWUS20 KWNS 211532

SEL1

SPC WW 211532

OKZ000-TXZ000-220000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 201

NWS STORM PREDICTION CENTER NORMAN OK

1025 AM CDT TUE MAY 21 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHERN OKLAHOMA

  NORTHERN AND CENTRAL TEXAS



* EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1025 AM UNTIL

  700 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE

  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS

    TO 80 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 3

    INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF

ABILENE TEXAS TO 35 MILES SOUTH SOUTHEAST OF PARIS 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.



&&



DISCUSSION...AIDED BY FORCING ASSOCIATED WITH A SHORT WAVE IMPULSE

TURNING EAST OF THE SOUTHERN HIGH PLAINS...INCREASING THUNDERSTORM

DEVELOPMENT IS EXPECTED DURING THE NEXT FEW HOURS ALONG A SURFACE

COLD FRONT AND REMNANT OUTFLOW BOUNDARY ACROSS THE WW AREA.  THE

OUTFLOW BOUNDARY...SITUATED NEAR OR JUST SOUTH OF THE RED RIVER MAY

BECOME THE FOCUS FOR AN INCREASINGLY ORGANIZED MESOSCALE CONVECTIVE

SYSTEM CAPABLE OF PRODUCING DAMAGING WINDS...LARGE HAIL AND ISOLATED

TORNADOES.  DISCRETE SUPERCELLS ARE POSSIBLE ALONG THE TRAILING

SOUTHERN FLANK OF THE DEVELOPING SYSTEM...SOUTHWARD THROUGH CENTRAL

TEXAS BY THIS AFTERNOON...AS WELL AS AHEAD OF THE SQUALL LINE ACROSS

NORTHERN TEXAS.  ONE OR TWO STRONG TORNADOES MAY NOT BE OUT OF THE

QUESTION.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 27035.





...KERR

