ZCZC SPCSWOMCD ALL
ACUS11 KWNS 270158 
SPC MCD 270158 
NEZ000-SDZ000-270300-

MESOSCALE DISCUSSION 1403
NWS STORM PREDICTION CENTER NORMAN OK
0858 PM CDT TUE JUL 26 2016

AREAS AFFECTED...PORTIONS OF SRN SD AND NRN/CNTRL NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 417...

VALID 270158Z - 270300Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 417
CONTINUES.

SUMMARY...A LARGE HAIL AND DAMAGING WIND THREAT CONTINUES ACROSS WW
417. DAMAGING WINDS SHOULD BECOME THE MAIN THREAT OVER THE NEXT HOUR
OR TWO...AND EITHER A SWD EXTENSION OF WW 417 OR A NEW SEVERE
THUNDERSTORM WATCH FOR CNTRL NEB MAY BE NEEDED.

DISCUSSION...MULTIPLE SUPERCELLS ACROSS SRN SD/NWRN NEB HAVE
PRODUCED LARGE HAIL UP TO 2 INCHES IN DIAMETER OVER THE PAST SEVERAL
HOURS...AND OCCASIONAL STRONG/DAMAGING WINDS...INCLUDING A MEASURED
WIND GUST TO 65 MPH IN DAWES COUNTY NEB AT 0122Z. RECENT CELL
MERGERS AND UPSCALE GROWTH INTO A BOWING LINE ALONG THE SD/NEB
BORDER HAVE COINCIDED WITH A MODESTLY STRENGTHENING SLY LLJ...AND
DAMAGING WINDS WILL LIKELY BECOME THE PRIMARY THREAT OVER THE NEXT
SEVERAL HOURS AS THE LINE MOVES SWD/SEWD INTO CNTRL NEB WHERE THE
GREATEST INSTABILITY RESIDES. AN ISOLATED TORNADO MAY ALSO BE
POSSIBLE WITH STRONG SLY LOW-LEVEL WINDS VEERING TO SWLY AT 2
KM...AND RECENT KLNX VWP ESTIMATES 0-1 KM SRH AROUND 250 M2/S2.

..GLEASON.. 07/27/2016

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

ATTN...WFO...FSD...GID...LBF...UNR...CYS...

LAT...LON   42430294 42810312 43100224 43300082 43329908 42119836
            41059916 41040207 42430294 

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