

497 

WWUS20 KWNS 162202

SEL7

SPC WW 162202

COZ000-NEZ000-SDZ000-WYZ000-170500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 327

NWS STORM PREDICTION CENTER NORMAN OK

405 PM MDT WED JUN 16 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST COLORADO

       WESTERN NEBRASKA

       SOUTH-CENTRAL SOUTH DAKOTA

       SOUTHEAST WYOMING



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 405 PM UNTIL

1100 PM MDT.



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 120 STATUTE

MILES EITHER SIDE OF A LINE FROM 65 MILES WEST NORTHWEST OF

TORRINGTON WYOMING TO 35 MILES SOUTHEAST OF MULLEN NEBRASKA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 325...WW 326...



DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INCREASE ACROSS THE WATCH

AREA...ESPECIALLY LATER THIS EVENING...AS LIFT ASSOCIATED WITH A

STRONG WRN TROUGH BEGINS TO EMERGE ACROSS THE ROCKIES AND ADJACENT

HIGH PLAINS. MOIST AND MODESTLY UNSTABLE AIRMASS WILL FUEL STRONG

UPDRAFTS WHILE BOTH DIRECTIONAL AND INCREASINGLY STRONG SPEED SHEAR

CONTRIBUTE TO SUPERCELL STORMS. LARGE HAIL AND A COUPLE OF TORNADOES

APPEAR POSSIBLE BEFORE POSSIBLE EVOLUTION INTO SMALL MCS OVER WRN

NEB WITH AN INCREASING CHANCE FOR DAMAGING WINDS.



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

500. MEAN STORM MOTION VECTOR 22025.





...CARBIN

