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WWUS20 KWNS 252005

SEL2

SPC WW 252005

COZ000-KSZ000-NMZ000-OKZ000-TXZ000-260300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 222

NWS STORM PREDICTION CENTER NORMAN OK

305 PM CDT TUE MAY 25 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST COLORADO

       SOUTHWEST KANSAS

       EAST CENTRAL NEW MEXICO

       WESTERN OKLAHOMA PANHANDLE

       WESTERN TEXAS PANHANDLE



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL

1000 PM CDT.



HAIL TO 2 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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF

LAMAR COLORADO TO 45 MILES WEST OF LUBBOCK TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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 221...



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO FORM ALONG THE

SLOW-MOVING DRYLINE BY 21Z FROM THE TX/NM BORDER NWD TO NEAR THE

CO/KS BORDER.  LOW-LEVEL SHEAR REMAINS WEAK OVER THE WATCH

AREA...BUT AREA PROFILER PLOTS SHOW SUFFICIENT DEEP-LAYER SHEAR FOR

SUPERCELLS.  MID-UPPER FLOW AND WEAK BACKGROUND ASCENT SHOULD BE

MAINTAINED OVER THIS AREA THROUGH THE EVENING AS A WEAK EMBEDDED

SHORTWAVE TROUGH MOVES NEWD FROM WRN NM.  GIVEN THE ZONE OF SURFACE

HEATING E OF THE DRYLINE WITH SURFACE DEWPOINTS IN THE LOW 60S AND

RESULTANT MODERATE INSTABILITY...A FEW STORMS WILL BE CAPABLE OF

PRODUCING LARGE HAIL AND DAMAGING WINDS THROUGH THE EVENING.



AVIATION...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 500. MEAN STORM

MOTION VECTOR 27015.





...THOMPSON

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