

350 

WWUS20 KWNS 241942

SEL0

SPC WW 241942

ARZ000-LAZ000-MOZ000-MSZ000-OKZ000-TNZ000-TXZ000-250400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 90

NWS STORM PREDICTION CENTER NORMAN OK

240 PM CDT THU APR 24 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND EASTERN ARKANSAS

  NORTHERN LOUISIANA

  THE MISSOURI BOOTHEEL

  WESTERN AND NORTHERN MISSISSIPPI

  FAR SOUTHEAST OKLAHOMA

  WEST TENNESSEE

  NORTHEAST TEXAS



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 240 PM UNTIL

  1100 PM CDT.



* PRIMARY THREATS INCLUDE...

  WIDESPREAD LARGE HAIL EXPECTED WITH ISOLATED VERY LARGE HAIL

    EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS

    TO 75 MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF

WALNUT RIDGE ARKANSAS TO 45 MILES SOUTH SOUTHWEST OF EL DORADO

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 89...



DISCUSSION...TSTMS EXPECTED TO FORM/STRENGTHEN ALONG SSW-NNE

PRE-FRONTAL CONFLUENCE AXIS NOW EXTENDING FROM NW LA TO N CNTRL AR

AS SFC HEATING AND MID-LVL COOLING/ASCENT ASSOCIATED WITH LEADING

EDGE OF POTENT NRN OK UPR VORT OVERSPREAD REGION. WHILE LOW-LVL

INSTABILITY PATTERN WILL REMAIN SOMEWHAT DISORGANIZED IN WAKE OF

MORNING ELEVATED STORMS/DEBRIS...SOME POTENTIAL MAY DEVELOP FOR ONE

OR TWO SFC-BASED STORMS WITH AN INCREASING RISK FOR A TORNADOES AS

LOW-LVL MOISTURE CONTINUES TO SPREAD NNE ACROSS ERN AR/WRN MS AND

500 MB WSW FLOW STRENGTHENS TO AOA 50 KTS. WERE SUCH A SCENARIO TO

MATERIALIZE...PARTS OF SRN/ERN AR...NE LA...AND WRN MS COULD REQUIRE

UPGRADE TO A TORNADO WATCH LATER IN THE DAY.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 25035.





...CORFIDI

