ZCZC SPCSWOMCD ALL
ACUS11 KWNS 222335 
SPC MCD 222335 
SDZ000-NDZ000-230030-

MESOSCALE DISCUSSION 1364
NWS STORM PREDICTION CENTER NORMAN OK
0635 PM CDT FRI JUL 22 2016

AREAS AFFECTED...DAKOTAS

CONCERNING...SEVERE THUNDERSTORM WATCH 409...410...

VALID 222335Z - 230030Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
409...410...CONTINUES.

SUMMARY...LARGE HAIL AND GUSTY WINDS ARE EXPECTED WITH THUNDERSTORM
CLUSTERS THIS EVENING.

DISCUSSION...CONVECTION IS GRADUALLY EXPANDING IN AREAL COVERAGE
ALONG THE ND/SD BORDER.  MULTIPLE THUNDERSTORM UPDRAFTS ARE
BEGINNING TO CLUSTER ACROSS THIS REGION AND AN MCS MAY ULTIMATELY
EVOLVE BEFORE SLOWLY PROPAGATING SEWD ACROSS THE MAIN BODY OF
WW409/410.  MRMS HAIL ALGORITHM SUGGESTS SEVERE HAIL HAS BEEN COMMON
WITH THE STRONGEST STORMS.  ADDITIONALLY...VERY HOT SFC TEMPERATURES
ACROSS WRN SD FAVOR STRONG DOWNDRAFTS GIVEN THE 50F TEMP/DEW POINT
SPREADS.  WEAK LOW-LEVEL WARM ADVECTION MAY ALSO AID LONGEVITY OF
THIS ACTIVITY INTO THE EVENING HOURS.

..DARROW.. 07/22/2016

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

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

LAT...LON   47110089 46349900 43909758 43679886 45000105 45500316
            46560348 47110089 

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