MESOSCALE DISCUSSION 1411
   NWS STORM PREDICTION CENTER NORMAN OK
   1008 PM CDT THU JUL 02 2009
   
   AREAS AFFECTED...PARTS OF NWRN INTO NORTH CENTRAL NEB
   
   CONCERNING...HEAVY RAINFALL 
   
   VALID 030308Z - 030445Z
   
   HEAVY RAINFALL RATES AROUND 1.5 INCH PER HOUR WILL BE POSSIBLE FROM
   NWRN INTO NORTH CENTRAL NEB THROUGH THE LATE EVENING INTO THE
   OVERNIGHT PERIOD AS STORMS CONTINUE TO TRAIN ESEWD ACROSS THIS
   REGION.
   
   02Z SURFACE/STREAMLINE ANALYSES INDICATED A BOUNDARY EXTENDING WNWWD
   FROM CENTRAL INTO NWRN NEB AND THEN WWD INTO CENTRAL WY... WHILE
   REGIONAL RADARS SHOWED CONTINUED TSTM DEVELOPMENT ALONG AND NORTH OF
   THIS BOUNDARY FROM NWRN TO NORTH CENTRAL NEB.  00Z UPPER AIR
   ANALYSIS INDICATED A VERY MOIST BOUNDARY LAYER ACROSS THIS REGION
   WITH SELY 20 KT LLJ MAINTAINING AN INFLUX OF THIS MOISTURE INTO NWRN
   NEB FOR THE NEXT SEVERAL HOURS.  LLJ IS EXPECTED TO VEER TO SLY
   OVERNIGHT AND WILL LIKELY MAINTAIN LOW LEVEL CONVERGENCE INTO NWRN
   NEB.  THIS COMBINED WITH FORCING FOR ASCENT SPREADING E/NEWD AHEAD
   OF SHORT WAVE TROUGH EJECTING FROM UT WILL SUPPORT ADDITIONAL TSTM
   DEVELOPMENT FROM PARTS OF CENTRAL/ERN WY INTO NWRN NEB.  CORFIDI
   VECTORS SUGGEST THE CLUSTER OF TSTMS SHOULD MOVE EWD...WHILE NEW
   TSTM DEVELOPMENT TENDS TO OCCUR WHERE LLJ INTERSECTS THE SURFACE
   BOUNDARY IN NWRN NEB.  PRECIPITABLE WATER VALUES PER 00Z SOUNDINGS
   WERE AROUND 1.25 INCHES WITH OBJECTIVE ANALYSIS NOW INDICATING
   VALUES AROUND 1.5 INCHES OVER PART OF NWRN NEB INTO WRN SD.  GIVEN
   THE OBJECTIVE ANALYSIS AND SHORT TERM MODELS ALSO SUGGESTING THESE
   VALUES WILL INCREASE TO AT LEAST 1.5 INCHES OVERNIGHT...HEAVY
   RAINFALL RATES AROUND 1.5 INCHES WILL BE LIKELY.
   
   ..PETERS.. 07/03/2009
   
   
   ATTN...WFO...LBF...CYS...
   
   LAT...LON   42490408 42970382 42950272 42930215 42730122 42510082
               41990059 41920084 42120282 42270388 42490408