

000 

WWUS20 KWNS 262307

SEL2

SPC WW 262307

KSZ000-NEZ000-270600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 612

NWS STORM PREDICTION CENTER NORMAN OK

605 PM CDT THU JUN 26 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWESTERN KANSAS

       WESTERN AND CENTRAL NEBRASKA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 605 PM

UNTIL 100 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHEAST OF

VALENTINE NEBRASKA TO 40 MILES SOUTH OF MCCOOK NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 610...WW 611...



DISCUSSION...N/S BROKEN BAND OF TSTMS THAT FORMED EARLIER TODAY IN

ERN CO/FAR WRN NEB EXPECTED TO CONTINUE E INTO INCREASING LOW LVL

MOISTURE.  COUPLED WITH 25-30 KT WLY MID LVL FLOW...ACTIVITY MAY

GROW INTO A N/S MCS.  LARGE TEMP-DEWPOINT SPREADS SUGGEST EMBEDDED

STORMS MAY YIELD HIGH WIND.  OTHER STORMS WITH WIND/HAIL MAY FORM

AHEAD OF MCS LATER THIS EVENING AS SYSTEM ENCOUNTERS WWD-MOVING

NW/SE OUTFLOW BOUNDARY IN CNTRL NEB.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 27025.





...CORFIDI

