Tornado Watch 220

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 220
NWS STORM PREDICTION CENTER NORMAN OK
225 PM CDT WED APR 23 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF EASTERN COLORADO
PARTS OF WESTERN KANSAS
LARGE PART OF WESTERN NEBRASKA INCLUDING THE PANHANDLE
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 225 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 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 50 MILES EAST NORTHEAST OF
CHADRON NEBRASKA TO 55 MILES EAST SOUTHEAST OF LAMAR 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.
OTHER WATCH INFORMATION...CONTINUE...
WW 217
...
WW 218
...
WW 219
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DISCUSSION...AIR MASS ALONG W EDGE OF STRONG SLY FLOW OF MOISTURE
HAS BECOME MDTLY UNSTABLE WITH MLCAPES AOA 1500 J/KG WITH LITTLE
REMAINING CINH. WITH APPROACH OF TROUGH FROM CENTRAL
ROCKIES...SHEAR PROFILES AND LARGE SCALE ASCENT WILL BE FAVORABLE
FOR SUPERCELL THUNDERSTORMS DEVELOPMENT FROM VICINITY CO/KS BORDER
NWD INTO NEB. STORMS WILL THEN MOVE NEWD INTO INCREASINGLY MOIST
UNSTABLE SLY FLOW BY EVENING WITH THREAT OF NOT ONLY LARGE HAIL BUT
TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.
...HALES