Tuesday, July 28, 2009

WATCHES: Severe Thunderstorm Watch Number 632

WWUS20 KWNS 282031
SEL2
SPC WW 282031
KSZ000-OKZ000-290300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 632
NWS STORM PREDICTION CENTER NORMAN OK
330 PM CDT TUE JUL 28 2009

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

PARTS OF SOUTHERN KANSAS
PARTS OF NORTHERN OKLAHOMA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1000 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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES SOUTHEAST OF
ENID OKLAHOMA TO 35 MILES WEST NORTHWEST OF WICHITA KANSAS. 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 631...

DISCUSSION...THUNDERSTORMS INCREASING IN NUMBER AND INTENSITY ALONG
AND AHEAD OF FRONT ACROSS CENTRAL KS. WITH 30-55 KT OF SHEAR
COUPLED WITH MLCAPES AOA 2000 J/KG...POTENTIAL FOR SEVERE
THUNDERSTORMS IS LIKELY WITH PRIMARY THREAT LARGE HAIL AND LOCALLY
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 550. MEAN STORM
MOTION VECTOR 31025.


...HALES

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