WATCHES: Severe Thunderstorm Watch Number 235

WWUS20 KWNS 282052
SEL5
SPC WW 282052
COZ000-KSZ000-NEZ000-290400-

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.


...MEAD

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