

177 

WWUS20 KWNS 131732

SEL8

SPC WW 131732

ARZ000-ILZ000-KYZ000-MOZ000-MSZ000-TNZ000-140000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 298

NWS STORM PREDICTION CENTER NORMAN OK

1235 PM CDT FRI MAY 13 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF EASTERN ARKANSAS

       PARTS OF SOUTHERN ILLINOIS

       PARTS OF WESTERN KENTUCKY

       PARTS OF SOUTHEAST MISSOURI

       MUCH OF NORTHERN MISSISSIPPI

       MUCH OF WESTERN TENNESSEE



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL

700 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH

NORTHEAST OF CAPE GIRARDEAU MISSOURI TO 65 MILES SOUTH SOUTHWEST

OF OXFORD MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 297...



DISCUSSION...AS COLD FRONT MOVES EWD ACROSS THE WATCH

AREA...THUNDERSTORMS EXPECTED TO INCREASE RAPIDLY IN NUMBER AND

INTENSITY THRU THE AFTERNOON.  PRIMARY THREAT WILL BE LARGE

HAIL...PARTICULARLY WITH ROTATING STORMS THAT COULD DEVELOP IN THE

MOIST/MDTLY UNSTABLE ENVIRONMENT. STORMS EXPECTED TO EVOLVE INTO

MORE LINEAR MODE WITH AN INCREASE IN WIND DAMAGE THREAT.



AVIATION...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.





...HALES

