

430 

WWUS20 KWNS 191816

SEL2

SPC WW 191816

MSZ000-TNZ000-200100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 172

NWS STORM PREDICTION CENTER NORMAN OK

120 PM CDT SUN APR 19 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN MISSISSIPPI

       WESTERN TENNESSEE



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 120 PM UNTIL 800

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 60

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

DYERSBURG TENNESSEE TO 45 MILES SOUTH SOUTHWEST OF OXFORD

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 171...



DISCUSSION...SCATTERED THUNDERSTORMS OVER EASTERN AR WILL DEVELOP

EASTWARD INTO WESTERN TN AND NORTHERN MS THIS AFTERNOON.  STRONG

WINDS ALOFT AND RAPIDLY DESTABILIZING AIRMASS WILL POSE A RISK OF

SUPERCELLS/BOWING LINE SEGMENTS CAPABLE OF HAIL AND DAMAGING WINDS.



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 400. MEAN STORM

MOTION VECTOR 24035.





...HART

