WATCHES: Severe Thunderstorm Watch Number 515

WWUS20 KWNS 122257
SEL5
SPC WW 122257
KSZ000-NMZ000-OKZ000-TXZ000-130600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 515
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CDT THU JUL 12 2007

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

WESTERN AND SOUTHERN KANSAS
NORTHEAST NEW MEXICO
NORTHWEST OKLAHOMA AND THE OKLAHOMA PANHANDLE
WESTERN AND NORTHERN PARTS OF THE TEXAS PANHANDLE

EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 555 PM
UNTIL 100 AM CDT.

HAIL TO 1.5 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 100
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH OF
DALHART TEXAS TO 70 MILES NORTH NORTHEAST OF DODGE CITY KANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 513...WW 514...

DISCUSSION...TSTMS/POSSIBLE MARGINAL SUPERCELLS EXPECTED TO CONTINUE
DEVELOP IN MOIST...WEAKLY CONVERGENT/SLIGHTLY UPSLOPE FLOW ACROSS WW
AREA. AREA IS DOWNSTREAM FROM WEAK UPR IMPULSE NOW CROSSING THE SAN
JUAN MTNS OF SRN CO. STORMS SHOULD MERGE INTO A SLOWLY-MOVING
MCS...WITH POSSIBLE EXCESSIVE RAINFALL IN ADDITION TO ISOLATED WET
MICROBURSTS PERSISTING THROUGH LATE EVENING.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 30015.

..CORFIDI

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@PO.UIUC.EDU with
"unsub wx-storm" in the body of your message. For more information write chris@lib.siu.edu.