

421 

WWUS20 KWNS 272040

SEL0

SPC WW 272040

ARZ000-OKZ000-280400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 100

NWS STORM PREDICTION CENTER NORMAN OK

335 PM CDT SUN APR 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTHWEST AND CENTRAL ARKANSAS

  EXTREME SOUTHEAST OKLAHOMA



* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 335 PM UNTIL

  1100 PM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* PRIMARY THREATS INCLUDE...

  NUMEROUS TORNADOES EXPECTED WITH A FEW INTENSE TORNADOES LIKELY

  WIDESPREAD LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    INCHES IN DIAMETER LIKELY

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80

    MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH OF DE QUEEN

ARKANSAS TO 50 MILES EAST NORTHEAST OF PINE BLUFF ARKANSAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 95...WW 96...WW 97...WW

98...WW 99...



DISCUSSION...DISCRETE STORMS ARE BEGINNING TO DEVELOP ALONG THE

DRYLINE NEAR THE RED RIVER IN SE OK...WHILE OTHER CONVECTION IS

EXPECTED TO DEVELOP FARTHER S IN NE TX THE REMAINDER OF THE

AFTERNOON.  THESE STORMS WILL MOVE ENEWD INTO THE WARM SECTOR AND

MATURE...AND WILL ENCOUNTER AN INCREASINGLY FAVORABLE ENVIRONMENT

FOR TORNADOES IN AR.  LOW-LEVEL SHEAR IS VERY STRONG ALONG A

RESIDUAL OUTFLOW BOUNDARY ACROSS CENTRAL AR...AND THE LOW LEVELS

WILL SLOWLY WARM AND MOISTEN IN THE WAKE OF EARLIER CONVECTION.

DISCRETE SUPERCELLS MOVING INTO THIS ENVIRONMENT WILL HAVE THE

POTENTIAL TO PRODUCE LONG TRACK...STRONG/VIOLENT TORNADOES WELL INTO

THE EVENING.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 24035.





...THOMPSON

