

186 

WWUS20 KWNS 301850

SEL4

SPC WW 301850

ARZ000-MOZ000-OKZ000-TXZ000-010100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 114

NWS STORM PREDICTION CENTER NORMAN OK

145 PM CDT FRI APR 30 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN ARKANSAS

       SOUTHERN MISSOURI

       EASTERN OKLAHOMA

       NORTHEASTERN TEXAS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 800

PM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF

SPRINGFIELD MISSOURI TO 15 MILES SOUTHEAST OF PARIS TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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 111...WW 112...WW 113...



DISCUSSION...STORMS HAVE RECENTLY BEEN DEVELOPING AND INTENSIFYING

IN ERN OK... ALONG AND JUST AHEAD OF A SLOW MOVING COLD FRONT.

MODERATE INSTABILITY AND STRONG DEEP LAYER SHEAR IS VERY FAVORABLE

FOR SUPERCELLS...AS THE STORMS DEVELOP/MOVE EWD THROUGH THE

AFTERNOON HOURS. THE VERY MOIST BOUNDARY LAYER AND 30-40 KT LOW

LEVEL SHEAR WILL BE SUPPORTIVE OF TORNADOES AND LARGE HAIL.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 23040.





...IMY

