

074 

WWUS20 KWNS 241649

SEL2

SPC WW 241649

COZ000-KSZ000-NEZ000-OKZ000-TXZ000-250100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 212

NWS STORM PREDICTION CENTER NORMAN OK

1150 AM CDT MON MAY 24 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN COLORADO

       WESTERN KANSAS

       EXTREME SOUTHWEST NEBRASKA

       THE OKLAHOMA PANHANDLE

       THE TEXAS PANHANDLE



EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1150 AM UNTIL 800

PM CDT.



TORNADOES...HAIL TO 2.5 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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF IMPERIAL

NEBRASKA TO 60 MILES EAST SOUTHEAST OF AMARILLO TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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.



DISCUSSION...THUNDERSTORMS ARE DEVELOPING LATE THIS MORNING ALONG

THE SURFACE TROUGH/DRYLINE MOVING EWD ACROSS ERN CO INTO THE WRN TX

PANHANDLE.  THIS BOUNDARY WILL PROGRESS EWD IN CONJUNCTION WITH AN

EJECTING NEGATIVE TILT SHORTWAVE TROUGH FROM CO/NRN NM...AND

THUNDERSTORM COVERAGE/INTENSITY SHOULD INCREASE AS SURFACE HEATING

ERODES CONVECTIVE INHIBITION IN AN ALREADY MODERATELY UNSTABLE

ENVIRONMENT.  VERTICAL SHEAR IS FAVORABLE FOR A BROKEN BAND OF

SUPERCELLS FOR THE FIRST FEW HOURS AFTER INITIATION...WITH THE

POTENTIAL FOR LARGE HAIL AND A FEW TORNADOES.  LATER THIS

AFTERNOON/EVENING...THERE WILL BE SOME POTENTIAL FOR UPSCALE GROWTH

INTO LINE SEGMENTS WITH AN ATTENDANT THREAT FOR DAMAGING WINDS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 22045.





...THOMPSON

