MESOSCALE DISCUSSION 1332
   NWS STORM PREDICTION CENTER NORMAN OK
   1141 PM CDT WED JUN 11 2008
   
   AREAS AFFECTED...NORTHEAST KS/FAR SOUTHEAST NEB/NORTHWEST MO/MUCH OF
   IA INTO SOUTHEAST MN/FAR WESTERN WI
   
   CONCERNING...TORNADO WATCH 511...512...
   
   VALID 120441Z - 120645Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 511...512...CONTINUES.
   
   TORNADO WATCH 511 CONTINUES UNTIL 07Z AND TORNADO WATCH 512
   CONTINUES UNTIL 08Z.
   
   QUASI-LINEAR CONVECTIVE SYSTEM CONTINUES TO STEADILY PROGRESS
   EASTWARD ACROSS SOUTHEAST MN AND MUCH OF CENTRAL/SOUTHWEST IA AS OF
   0430Z. WHILE SOME SEVERE HAIL/ISOLATED TORNADO RISK
   REMAINS...PRIMARY HAZARDS HAVE EVOLVED INTO DAMAGING WINDS AND VERY
   HEAVY RAINFALL. WITHIN THE LAST HOUR...MEASURED SEVERE GUSTS HAVE
   BEEN NOTED AT IOWA FALLS /60 KT AT 0355Z/ AND RED OAK IA /50 KT AT
   0335Z/. ALTHOUGH QUESTIONS EXIST REGARDING THE STABILITY OF THE
   DOWNSTREAM AIRMASS ACROSS FAR EASTERN IA INTO WESTERN WI...THE
   POSSIBILITY OF A NEW WATCH AND/OR LOCAL EXTENSION WILL HAVE TO BE
   CLOSELY EVALUATED OVER THE NEXT HOUR OR SO AS STORMS CONTINUE TO
   NEAR THE EASTERN PORTION OF WW 511.
   
   FARTHER SOUTH...QUASI-DISCRETE TORNADIC SUPERCELLS /WITH A HISTORY
   OF TORNADO DAMAGE/ CONTINUE TO ADVANCE NORTHEASTWARD ACROSS
   NORTHEAST KS ALONG/NORTH OF I-70 AS OF 0430Z...WHILE OTHER
   POTENTIALLY TORNADIC STORMS CONTINUE INTO FAR NORTHWEST MO/FAR
   SOUTHWEST IA. WHILE LOW LEVEL HODOGRAPHS REMAIN QUITE FAVORABLE
   /200-400 M2/S2 0-1 KM SRH/ FOR CONTINUED TORNADO POTENTIAL WITHIN
   THIS CORRIDOR...INCREASING BOUNDARY LAYER CINH/STORM MERGERS SHOULD
   RESULT IN A TREND TOWARD DAMAGING WINDS/HAIL AND VERY HEAVY RAINFALL
   AS THE PRIMARY RISKS OVERNIGHT.
   
   ..GUYER.. 06/12/2008
   
   
   ATTN...WFO...DVN...ARX...MPX...DMX...EAX...OAX...TOP...
   
   44569290 44499126 43459124 41949116 40119352 38559609
   39429736 40709538 42299376