

104 

WWUS20 KWNS 210028

SEL2

SPC WW 210028

COZ000-KSZ000-NEZ000-210700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 162

NWS STORM PREDICTION CENTER NORMAN OK

625 PM MDT TUE MAY 20 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EXTREME EASTERN COLORADO

  NORTHWESTERN KANSAS

  WEST-CENTRAL AND SOUTHWESTERN NEBRASKA



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 625 PM

  UNTIL 100 AM MDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER

    POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH OF

GOODLAND KANSAS TO 65 MILES NORTHWEST OF NORTH PLATTE NEBRASKA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 160...WW 161...



DISCUSSION...TWO PRIMARY CLUSTERS OF SVR TSTMS -- OVER NEB PANHANDLE

NEAR BFF AND ERN CO N LIC -- HAVE POTENTIAL TO CONTINUE PRODUCING

LARGE HAIL AS THEY MOVE EWD TO ESEWD OUT OF WW 160.  WIND THREAT

ALSO MAY INCREASE DEPENDING ON UPSCALE GROWTH PATTERN OF CURRENT

STORM-SCALE COLD POOLS.  SOUTHERN COMPLEX MAY HAVE GREATER LONGEVITY

INTO WRN KS BASED ON MORE FAVORABLE THERMODYNAMIC ENVIRONMENT IN ITS

PROSPECTIVE PATH...HENCE LARGER WW AREA ON THAT END...HOWEVER EITHER

COMPLEX MAY BACKBUILD/EXPAND IN ADDITION TO POTENTIAL FOR NEW

DEVELOPMENT.  REF SPC MESOSCALE DISCUSSION 627 FOR MORE

ENVIRONMENTAL DETAILS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27030.





...EDWARDS

