WATCHES: Tornado Watch Number 173

WWUS20 KWNS 241624
SEL3
SPC WW 241624
OKZ000-TXZ000-250100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 173
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CDT TUE APR 24 2007

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

A LARGE PART OF OKLAHOMA
WESTERN NORTH TEXAS

EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1125 AM UNTIL 800
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF PONCA
CITY OKLAHOMA TO 35 MILES SOUTHWEST OF ARDMORE OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 172...

DISCUSSION...TSTMS/SUPERCELLS EXPECTED TO FORM/INTENSIFY ALONG
MERGING PACIFIC FRONT/DRY LINE. INITIAL ACTIVITY MAY BE SLIGHTLY
ELEVATED ABOVE FRONTAL SURFACE. BUT COMBINATION OF SFC
HEATING...STRENGTHENING DEEP SHEAR WITH CONTINUED ENE MOTION OF FAR
W TX UPR DISTURBANCE AND QUALITY MOISTURE INFLOW SUGGEST HIGH
LIKELIHOOD FOR VERY LARGE HAIL...A FEW TORNADOES AND DAMAGING WIND.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 22045.

..CORFIDI

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