ZCZC SPCSWOMCD ALL
ACUS11 KWNS 170007 
SPC MCD 170007 
SDZ000-NEZ000-170130-

MESOSCALE DISCUSSION 1301
NWS STORM PREDICTION CENTER NORMAN OK
0707 PM CDT SAT JUL 16 2016

AREAS AFFECTED...WESTERN/CENTRAL SD

CONCERNING...SEVERE THUNDERSTORM WATCH 391...392...

VALID 170007Z - 170130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
391...392...CONTINUES.

SUMMARY...SCATTERED SEVERE WIND/HAIL MAY PERSIST EASTWARD AS AN MCS
SHIFTS FROM WESTERN INTO CENTRAL SD. PORTIONS OF WW 391 MAY REQUIRE
AN AREAL EXTENSION EAST ACROSS FAR SOUTH-CENTRAL SD.

DISCUSSION...AN MCS WITH EMBEDDED SUPERCELLS IS ONGOING FROM BUTTE
TO OGLALA LAKOTA COUNTIES. RAPID CITY VWP DATA SAMPLED STRONG
TROPOSPHERIC SPEED SHEAR YIELDING AN ELONGATED STRAIGHT-LINE
HODOGRAPH. ALTHOUGH THERE IS UNCERTAINTY IN THE DEGREE OF DOWNSTREAM
MLCIN OVER CENTRAL SD /WHICH SHOULD FURTHER INCREASE AFTER
SUNSET/...THE DEGREE OF DEEP SHEAR AND NUMBER OF STORMS MAY SUPPORT
AN ORGANIZED CLUSTER CONTINUING EAST EVENTUALLY INTO PARTS OF WW
392. A MIX OF SEVERE WIND/HAIL IS ANTICIPATED.

..GRAMS.. 07/17/2016

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

ATTN...WFO...FSD...ABR...LBF...UNR...

LAT...LON   45020291 45340240 45560127 45570047 45399981 44979928
            44379918 43489934 43179961 42990041 42850096 42850169
            42990228 43510243 44240261 45020291 

NNNN