[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 070137
SWOMCD
SPC MCD 070137 
SDZ000-NDZ000-070300-

MESOSCALE DISCUSSION 1213
NWS STORM PREDICTION CENTER NORMAN OK
0837 PM CDT MON JUN 06 2005

AREAS AFFECTED...CENTRAL ND...CENTRAL SD

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 070137Z - 070300Z

...WW WILL BE REQUIRED SHORTLY FOR PORTIONS OF THE CENTRAL
DAKOTAS...

LLJ IS IN THE PROCESS OF STRENGTHENING FROM NRN NEB INTO THE CENTRAL
DAKOTAS AS BOUNDARY LAYER DECOUPLES WITH LOSS OF HEATING.  SCATTERED
SUPERCELLS HAVE PROGRESSED ACROSS WRN SD/SWRN MT INTO SWRN ND WHERE
AN AXIS OF ENHANCED INSTABILITY/SHEAR CURRENTLY EXIST. AS UPPER
RIDGE AXIS SHIFTS DOWNSTREAM THUNDERSTORMS SHOULD CONTINUE TO SPREAD
ACROSS THE NRN PLAINS. CURRENT THINKING IS TSTMS WILL GRADUALLY
ELEVATE AS DECOUPLING OCCURS...ESPECIALLY GIVEN THE INHIBITION
OBSERVED AT BIS.  HOWEVER...CONTINUED BOUNDARY LAYER MOISTENING
WITHIN BROAD WARM ADVECTION REGIME COMPLICATES THE SEVERE
EVOLUTION...POSSIBLY MAINTAINING TORNADO THREAT ACROSS THIS REGION
FOR SEVERAL MORE HOURS.  WITH TIME...ONE OR MORE MCS/S MAY EVOLVE
ACROSS THIS REGION.

..DARROW.. 06/07/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FSD...ABR...BIS...UNR...

43550111 47830171 47420006 43599831 

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