URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 736
NWS STORM PREDICTION CENTER NORMAN OK
530 PM CST WED NOV 21 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND EASTERN LOUISIANA
WESTERN AND NORTHERN MISSISSIPPI
WESTERN TENNESSEE
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1100 PM CST.
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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTHEAST OF
DYERSBURG TENNESSEE TO 5 MILES SOUTH OF LAFAYETTE LOUISIANA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).
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 734...WW 735...
DISCUSSION...BROKEN LINE OF STRONG TO SEVERE THUNDERSTORMS OVER
AR/LA WILL CONTINUE TO TRACK EASTWARD INTO PARTS OF TN AND MS DURING
THE EVENING HOURS. SUFFICIENT INSTABILITY AND DEEP LAYER VERTICAL
SHEAR VALUES OF 35-45 KNOTS WILL SUPPORT A RISK OF EMBEDDED
SUPERCELLS 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 450. MEAN STORM
MOTION VECTOR 27030.
..HART
MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ALCORN AMITE
ATTALA BENTON BOLIVAR
CALHOUN CARROLL CHICKASAW
CHOCTAW CLAIBORNE CLAY
COAHOMA COPIAH DESOTO
FRANKLIN GRENADA HINDS
HOLMES HUMPHREYS ISSAQUENA
ITAWAMBA JEFFERSON LAFAYETTE
LAWRENCE LEAKE LEE
LEFLORE LINCOLN MADISON
MARSHALL MONROE MONTGOMERY
OKTIBBEHA PANOLA PIKE
PONTOTOC PRENTISS QUITMAN
RANKIN SCOTT SHARKEY
SIMPSON SUNFLOWER TALLAHATCHIE
TATE TIPPAH TISHOMINGO
TUNICA UNION WARREN
WASHINGTON WEBSTER WILKINSON
WINSTON YALOBUSHA YAZOO
Wednesday, November 21, 2007
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