Tornado Watch 417

TORNADO WATCH FOR PORTIONS OF
NEBRASKA PANHANDLE
FAR SOUTHWEST SOUTH DAKOTA
EASTERN WYOMING
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 230 PM UNTIL
1000 PM MDT.
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 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 95 MILES NORTH NORTHEAST OF
DOUGLAS WYOMING TO 5 MILES SOUTH SOUTHEAST OF SIDNEY 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 415
...
WW 416
...
DISCUSSION...SEVERE THUNDERSTORMS...INCLUDING POTENTIAL FOR
LONGER-LIVED SUPERCELLS...WILL DEVELOP AND SPREAD ESEWD ACROSS WW
THIS EVENING. AIR MASS IS ALREADY MODERATELY UNSTABLE WITH
EFFECTIVE SHEAR NEAR 50 KT. STORMS WILL BE CAPABLE OF LARGE
HAIL...WITH ISOLATED TORNADO THREAT INCREASING THROUGH THE EARLY
EVENING AS SELY LOW LEVEL FLOW STRENGTHENS OVER SERN WY/NEB
PANHANDLE.
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 28020.
...EVANS