MESOSCALE DISCUSSION 1122
   NWS STORM PREDICTION CENTER NORMAN OK
   0535 PM CDT TUE JUN 12 2007
   
   AREAS AFFECTED...NERN CO...NWRN/NCENTRAL KS...CENTRAL/WRN NEB
   
   CONCERNING...TORNADO WATCH 387...
   
   VALID 122235Z - 130030Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 387 CONTINUES.
   
   THREAT FOR SVR HAS DIMINISHED OVER MUCH OF WW 387...EXCEPT PORTIONS
   OF CENTRAL NEB...AS CLOUD COVER AND PREVIOUS CONVECTIVE OUTFLOW HAS
   STABILIZED THE ENVIRONMENT. ISOLATED SVR TSTMS WILL BE POSSIBLE EAST
   OF WW 387 ACROSS CENTRAL NEB/NCENTRAL KS...BUT A WW IS NOT
   ANTICIPATED ACROSS THIS AREA ATTM. WW 387 IS EXPECTED TO EXPIRE AT
   00Z.
   
   MUCH OF WRN NEB/NWRN KS AND NERN CO HAS BECOME STABILIZED IN THE
   WAKE OF EARLIER CONVECTION WITH SFC TEMPERATURES IN THE 60S.
   ALTHOUGH A SLIGHT MODIFICATION TO THE AIRMASS IS POSSIBLE OVER NERN
   CO WHERE SOLAR HEATING SHOULD INCREASE IN THE NEXT FEW HOURS /PER
   SAT IMAGERY/ THE SVR THREAT IS EXPECTED TO REMAIN LIMITED ACROSS
   MOST OF WW 387. THE ONLY EXCEPTION TO THIS IS OVER FAR ERN PORTIONS
   OF WW 387  /EAST OF LINE FROM LBF AND VTN/ WHERE AN ORGANIZED
   CONVECTIVE LINE WILL CONTINUE TO MOVE SLOWLY EWD. THIS CONVECTIVE
   LINE AND ADDITIONAL ISOLATED DISCRETE CELLS WILL CONTINUE TO POSE A
   MARGINAL SVR THREAT FOR THE NEXT SEVERAL HOURS ACROSS CENTRAL NEB
   AND NCENTRAL KS. HOWEVER...GIVEN THAT MOST OF THIS CONVECTION WILL
   REMAIN AHEAD OF STRONGER MID LEVEL FLOW...THE SVR THREAT SHOULD
   REMAIN ISOLATED/MARGINAL ENOUGH THAT A WW IS NOT EXPECTED.
   
   ..CROSBIE.. 06/12/2007
   
   
   ATTN...WFO...TOP...ICT...GID...LBF...DDC...GLD...PUB...
   
   40010255 38260275 38320019 38319780 40489798 42989903
   42710075 40490148