ZCZC SPCSWOMCD ALL ACUS11 KWNS 100325 SPC MCD 100325 NDZ000-SDZ000-MTZ000-100500- MESOSCALE DISCUSSION 0858 NWS STORM PREDICTION CENTER NORMAN OK 1025 PM CDT THU JUN 09 2016 AREAS AFFECTED...E-CNTRL MT...WRN ND...WRN SD CONCERNING...SEVERE THUNDERSTORM WATCH 239...240... VALID 100325Z - 100500Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 239...240...CONTINUES. SUMMARY...THE SEVERE THUNDERSTORM THREAT CONTINUES ACROSS WW 239/240 AND ADJACENT AREAS. GRADUAL WEAKENING IS EXPECTED WITH TIME...BUT SOME SEVERE THREAT WILL PERSIST INTO THE LATE EVENING ALONG AND AHEAD OF EXISTING STORMS. DISCUSSION...AT 0320Z...A VERY LONG-LIVED SUPERCELL HAS MOVED INTO BILLINGS CO IN ND...WHILE ANOTHER INTENSE CLUSTER /ANCHORED BY ANOTHER RELATIVELY LONG-LIVED SUPERCELL/ WAS MOVING ACROSS NWRN ND AND APPROACHING THE MINOT VICINITY. LARGE HAIL AND DAMAGING WIND WILL REMAIN A THREAT WITH THIS ACTIVITY...WITH RADAR SIGNATURES INDICATING A THREAT OF WIND-DRIVEN HAIL FOR AT LEAST THE SHORT TERM. ELSEWHERE...A LOOSELY ORGANIZED MCS HAS EVOLVED OVER E-CNTRL MT...WITH MORE DISORGANIZED CONVECTION EXTENDING INTO WRN ND/SD. THE SEVERE THREAT ACROSS WW 239 SHOULD BE OVER BY THE 04Z EXPIRATION TIME AS STORMS MOVE OUT OF THE AREA. AS DESTABILIZATION DUE TO NOCTURNAL COOLING BEGINS IN EARNEST...A GRADUAL WEAKENING TREND IS EXPECTED...THOUGH SOME CONVECTION IS EXPECTED TO PERSIST INTO THE LATE EVENING AS A MODESTLY INCREASING LOW-LEVEL JET INTERACTS WITH A FRONTAL BOUNDARY AND VARIOUS OUTFLOW BOUNDARIES ACROSS THE AREA. A MORE ROBUST MCS APPEARS TO BE EVOLVING ACROSS NRN ND...WHICH MAY RESULT IN A CONTINUATION OF SOME SEVERE WIND AND HAIL RISK TO THE NERN EDGE OF WW 240 AND BEYOND BY 05-06Z. LOCAL ADDITION OF COUNTIES MAY BE REQUIRED ACROSS PORTIONS OF WW 240 IN THE SHORT TERM...WHILE THE NEED FOR ANY DOWNSTREAM ISSUANCE WILL BE DETERMINED BY CONVECTIVE TRENDS IN THE NEXT 1-2 HRS. ..DEAN.. 06/10/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ABR...BIS...UNR...BYZ...GGW... LAT...LON 46670465 47110465 47390435 47690376 48970276 48980051 47390057 46340110 45640137 45190156 44920192 44710242 44740300 44850349 45130380 45910410 46440466 46670465 NNNN