WATCHES: Tornado Watch Number 215

WWUS20 KWNS 010258
SEL5
SPC WW 010258
OKZ000-TXZ000-010700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 215
NWS STORM PREDICTION CENTER NORMAN OK
950 PM CDT MON APR 30 2012

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

CENTRAL AND SOUTHERN OKLAHOMA
WESTERN NORTH TEXAS

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 950 PM UNTIL
200 AM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHEAST OF
FORT SILL OKLAHOMA TO 60 MILES NORTHWEST OF CHANDLER OKLAHOMA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 210...WW 211...WW
212...WW 213...WW 214...

DISCUSSION...SUPERCELL COMPLEX IN SW OK EXPECTED MOVE/DEVELOP E OR
ESE THROUGH EARLY TUE AS LLJ CONTINUES TO STRENGTHEN AND SLIGHTLY
VEER IN RESPONSE TO PASSING UPR IMPULSE NOW OVER SW KS. QUALITY OF
MOISTURE...STEEP MID LVL LAPSE RATES...AND 30+ KT WLY 700 MB FLOW
SUGGEST A CONTINUED RISK FOR A FEW LOW LVL MESOS AND POSSIBLE
TORNADOES...IN ADDITION TO A CONTINUED RISK FOR LARGE HAIL AND AN
INCREASING RISK FOR DMGG WIND. FARTHER N...SUSTAINED MOIST SLY FLOW
SUGGESTS THAT OTHER STORMS MAY FORM SW OF CURRENT N CNTRL OK
SUPERCELL COMPLEX. IF THIS DOES OCCUR...THE STORMS SHOULD MOVE
MAINLY EWD...AFFECTING AREAS FROM ENID S AND SE INTO THE OKC AND
STILLWATER AREAS WITH LARGE HAIL...DMGG WIND...AND PERHAPS A COUPLE
TORNADOES BEFORE ACTIVITY EVOLVES INTO AN MCS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 28030.


...CORFIDI

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