SEL3
SPC WW 131944
ARZ000-LAZ000-MSZ000-140200-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 473
NWS STORM PREDICTION CENTER NORMAN OK
245 PM CDT MON JUN 13 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME SOUTHEAST ARKANSAS
EXTREME NORTHEAST LOUISIANA
CENTRAL MISSISSIPPI
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 900
PM CDT.
HAIL TO 1 INCH 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 90
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTHWEST
OF GREENVILLE MISSISSIPPI TO 20 MILES EAST SOUTHEAST OF MERIDIAN
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 472...
DISCUSSION...MCS OVER NW MS WILL CONTINUE TO MOVE SWD ALONG THE
INSTABILITY AXIS...IN AN ENVIRONMENT WITH 30 KT NNWLY/NLY MIDLEVEL
FLOW. MLCAPE NEAR 2500 J/KG AND STEEP LOW-LEVEL LAPSE RATES WILL
CONTINUE TO SUPPORT A RISK OF DAMAGING OUTFLOW WINDS THROUGH THE
AFTERNOON...ALONG WITH THE POTENTIAL FOR MARGINALLY SEVERE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
VECTOR 35035.
...THOMPSON
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