WATCHES: Severe Thunderstorm Watch Number 748

WWUS20 KWNS 082301
SEL8
SPC WW 082301
OKZ000-090600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 748
NWS STORM PREDICTION CENTER NORMAN OK
600 PM CDT MON AUG 8 2011

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

WESTERN...CENTRAL AND NORTHEASTERN OKLAHOMA

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 600 PM UNTIL
100 AM CDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
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 20 MILES NORTHWEST OF
BARTLESVILLE OKLAHOMA TO 40 MILES SOUTH OF CLINTON OKLAHOMA. 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 746...WW 747...

DISCUSSION...TSTMS EXPECTED TO INCREASE IN COVERAGE AND STRENGTH
ALONG BOTH SLOWLY-ADVANCING NE-SW COOL FRONT IN WRN OK...AND...MOST
LIKELY LATER THIS EVE...ALONG STALLING WNW-ESE OUTFLOW BOUNDARY IN N
CNTRL/NE OK. A CLUSTER OR TWO OF STORMS MAY EVOLVE WITH
TIME...ESPECIALLY INVOF OF FRONT-BOUNDARY INTERSECTION IN NW OR N
CNTRL OK. THERMODYNAMIC SETUP APPEARS FAVORABLE FOR MICROBURSTS
AND/OR SMALL BOWING SEGMENTS WITH HIGH WIND.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 32020.

...CORFIDI

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