Sunday, June 01, 2008

Thunderstorm Watch


   URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 416
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT SUN JUN 1 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

NORTHERN AND CENTRAL ALABAMA
EASTERN ARKANSAS
NORTHERN MISSISSIPPI
SOUTHERN TENNESSEE

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 305 PM UNTIL 900
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 EITHER SIDE OF A LINE FROM 70 MILES NORTH NORTHWEST
OF GREENVILLE MISSISSIPPI TO 25 MILES NORTHEAST OF ANNISTON
ALABAMA. 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 415...

DISCUSSION...COMPLEX SEVERE SCENARIO WILL UNFOLD ACROSS WW THIS
EVENING AS MCS SHIFTS EWD OUT OF AR AND SERIES OF OUTFLOW BOUNDARIES
INTERACT WITHIN RESERVOIR OF MODERATE INSTABILITY. EFFECTIVE SHEAR
REMAINS MODEST...BUT STILL SUPPORTIVE OF ORGANIZED LINES/MULTICELL
CLUSTERS. BOTH LARGE HAIL AND DAMAGING WINDS CAN BE EXPECTED WITH
THE MORE INTENSE CORES.

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 28030.


...EVANS

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