

000 

WWUS20 KWNS 172344

SEL6

SPC WW 172344

TXZ000-180700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 126

NWS STORM PREDICTION CENTER NORMAN OK

640 PM CDT MON MAR 17 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       A LARGE PART OF CENTRAL AND SOUTH CENTRAL TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 640 PM UNTIL

200 AM CDT.



TORNADOES...HAIL TO 2 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 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF MINERAL

WELLS TEXAS TO 75 MILES WEST SOUTHWEST OF COTULLA TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 124...WW 125...



DISCUSSION...TSTMS/SUPERCELLS EXPECTED TO DEVELOP LATER THIS EVENING

IN SEVERAL AREAS ACROSS CNTRL AND S CNTRL TX...LARGELY IN RESPONSE

TO EJECTION OF STRONG UPR TROUGH NOW OVER NW MEXICO.  STORMS SHOULD

FORM PRIMARILY ALONG INVERTED TROUGH/DRY LINE IN WRN PART OF

WW...BUT ALSO ALONG SWD-MOVING COLD FRONT IN NRN PART.  SLIGHT

BACKING OF MID/UPR FLOW PARALLEL TO LEE TROUGH SUGGESTS EVENTUAL

DEVELOPMENT OF A LARGE MCS.  MORE ISOLATED STORMS MAY ALSO FORM

ALONG CORRIDOR OF HEATING E OF DRT.  WHILE STORM MODE/LONGEVITY WILL

VARY ACROSS THE WW...STRENGTHENING DEEP WIND FIELD/UVV AND

SEASONABLY RICH LOW-LEVEL MOISTURE WILL SUPPORT SUPERCELLS WITH

LARGE HAIL/HIGH WIND AND POSSIBLE TORNADOES.



AVIATION...TORNADOES AND 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 21035.





...CORFIDI

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