

000 

WWUS20 KWNS 231839

SEL0

SPC WW 231839

COZ000-NEZ000-WYZ000-240100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 340

NWS STORM PREDICTION CENTER NORMAN OK

1240 PM MDT FRI MAY 23 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHEAST COLORADO

       MUCH OF NEBRASKA PANHANDLE

       PARTS OF EASTERN WYOMING



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL

700 PM MDT.



TORNADOES...HAIL TO 3 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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHEAST OF

DOUGLAS WYOMING TO 25 MILES WEST SOUTHWEST OF AKRON COLORADO.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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...VERY STRONG VEERING SHEAR PROFILES E OF HIGHER TERRAIN

IN SERN WY/NERN CO WITH INCREASINGLY MOIST SELY FLOW.  WITH LITTLE

REMAINING CINH...THUNDERSTORMS EXPECTED TO INCREASE RAPIDLY IN

NUMBER/INTENSITY.  SUPERCELLS WILL DEVELOP WITH ASSOCIATED VERY

LARGE HAIL AND POSSIBLE TORNADOES AS THEY MOVE QUICKLY N ACROSS

WATCH AREA.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 18040.





...HALES

