05/28/2013 04:55 PM EDT
05/28/2013 04:55 PM EDT
WW 235 SEVERE TSTM CO KS NE 282055Z - 290400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 235
NWS STORM PREDICTION CENTER NORMAN OK 255 PM MDT
TUE MAY 28 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHEAST COLORADO
NORTHWEST KANSAS
WESTERN NEBRASKA INCLUDING THE PANHANDLE
* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM
255 PM UNTIL 1000 PM MDT.
* PRIMARY THREATS INCLUDE...
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO
2.5 INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF
CHADRON NEBRASKA TO 55 MILES SOUTHEAST OF AKRON COLORADO.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 233...WW 234...
DISCUSSION...
TSTMS DEVELOPED ACROSS THE AREA ALONG THE LEADING EDGE OF STRONGER
HEIGHT FALLS SPREADING E OF THE GREAT BASIN. AREA VAD/PROFILER DATA
INDICATE MIDLEVEL FLOW STRENGTHENING TO 30-35 KT ATOP A LOW-LEVEL
WIND FIELD THAT SHOULD CONTINUE TO INCREASE OUT OF THE SE OWING TO
LEE CYCLOGENESIS ACROSS ERN CO.
GIVEN THE STEEP LAPSE RATES IN PLACE...
THE SETUP WILL SUPPORT SUPERCELLS CAPABLE OF LARGE HAIL AND LOCALLY
DAMAGING WIND GUSTS.
AVIATION...
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 26020. ...MEADRead more
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