SWOMCD
SPC MCD 090147
NEZ000-SDZ000-NDZ000-090245-
MESOSCALE DISCUSSION 0702
NWS STORM PREDICTION CENTER NORMAN OK
0847 PM CDT SUN MAY 08 2011
AREAS AFFECTED...SCNTRL ND TO NCNTRL NEB
CONCERNING...TORNADO WATCH 265...
VALID 090147Z - 090245Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 265 CONTINUES.
LOW LEVEL WARM ADVECTION APPEARS TO BE PARTLY RESPONSIBLE FOR NEW
TSTM DEVELOPMENT ACROSS SRN ND. LATEST VIS IMAGERY SUGGESTS BACK
EDGE OF DEEPER CONVECTION IS OCCURRING OVER SIOUX COUNTY AND THIS
ACTIVITY SHOULD SPREAD/DEVELOP EWD OVER THE NEXT FEW HOURS. WITH A
FAIRLY SIGNIFICANT CAP IN PLACE ACROSS THE ERN DAKOTAS INTO ERN NEB
IT APPEARS ANY STORMS THAT SPREAD EAST OF ONGOING WW WILL QUICKLY
BECOME ELEVATED. THIS SHOULD LIMIT ANY TORNADIC POTENTIAL TO A
NARROW WEDGE OF INSTABILITY ACROSS SD INTO SCNTRL ND BEFORE BOUNDARY
LAYER DECOUPLES OVER THE NEXT FEW HOURS.
..DARROW.. 05/09/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FSD...OAX...ABR...GID...BIS...LBF...UNR...
LAT...LON 46940248 46940018 41669772 41659985 46940248
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