

244 

WWUS20 KWNS 080704

SEL4

SPC WW 080704

KSZ000-081400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 284

NWS STORM PREDICTION CENTER NORMAN OK

200 AM CDT TUE JUN 8 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN AND EASTERN KANSAS



EFFECTIVE THIS TUESDAY MORNING FROM 200 AM UNTIL 900 AM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF

CONCORDIA KANSAS TO 45 MILES SOUTH SOUTHEAST OF MANHATTAN KANSAS.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 282...WW 283...



DISCUSSION...SRN PART OF S CNTRL NEB MCS EXPECTED TO MOVE WITH A

HEADING OF 290-300 DEGREES DURING THE NEXT FEW HOURS AS SWLY LLJ

CONTINUES TO STRENGTHEN AND VEER DOWNSTREAM FROM UPR IMPULSE

CROSSING THE CNTRL RCKYS...AND CONVECTIVE SYSTEM ENCOUNTERS LOW LVL

INSTABILITY GRADIENT ORIENTED NW/SE.  SUFFICIENT MOISTURE

INFLOW/INSTABILITY SHOULD REMAIN PRESENT TO SUPPORT A RISK OF DMG

WIND.  MARGINALLY SVR HAIL ALSO MAY OCCUR...BOTH ALONG LEADING

CONVECTIVE LINE...AND WITH ELEVATED STORMS FORMING ATOP COLD POOL IN

WAKE OF MCS.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

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

VECTOR 30035.





...CORFIDI

