ZCZC SPCSWOMCD ALL
ACUS11 KWNS 290244 
SPC MCD 290244 
NEZ000-KSZ000-COZ000-290345-

MESOSCALE DISCUSSION 1083
NWS STORM PREDICTION CENTER NORMAN OK
0944 PM CDT TUE JUN 28 2016

AREAS AFFECTED...SWRN NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 307...

VALID 290244Z - 290345Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 307
CONTINUES.

SUMMARY...HIGH-END SQUALL LINE WILL RESULT IN WIDESPREAD SWATHS OF
SEVERE GUSTS RANGING FROM 50-75 KT.  THE SEVERE-REPORT DISTRIBUTION
WILL LIKELY RESULT IN A DERECHO CLASSIFICATION.

DISCUSSION...RADAR MOSAIC SHOWS AN INTENSE SQUALL LINE FROM N-CNTRL
NEB SWWD INTO EXTREME NERN CO WHILE A SEPARATE LINEAR CLUSTER
EXTENDS FROM NERN CO SWWD TO THE PALMER DIVIDE IN E-CNTRL CO.  A
RECENT INSTRUMENTED MEASURED GUST AT KOGA OBSERVED 68 KT.  THE STEEP
H7-H5 LAPSE RATES/STRONG DEEP-LAYER SHEAR WILL STRONGLY FAVOR SQUALL
LINE MAINTENANCE/INTENSITY FOR THE NEXT FEW HOURS. 
FURTHERMORE...LOW-LEVEL FLOW HAS STRENGTHENED DURING THE PAST HOUR
ACROSS THE CNTRL HIGH PLAINS DOWNSTREAM OF THE SQUALL LINE AND A
30-KT H85 SSELY JET PER THE KGLD VAD IS EVIDENT --YIELDING ROUGHLY
70-KT STORM-RELATIVE INFLOW AT H85.  GIVEN THE FORWARD MOTION OF 300
DEG AT 42 KT...THE MOST INTENSE PART OF THE SQUALL LINE WILL MOVE
THROUGH SWRN NEB DURING THE NEXT 1-1.5 HOURS.  GUSTS IN THE 50-75 KT
RANGE WILL BE POSSIBLE AND THE EXPECTED EVOLUTION OF THE SEVERE
THREAT INTO NWRN KS WILL LIKELY RESULT IN A DERECHO CLASSIFICATION.

..SMITH.. 06/29/2016

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

ATTN...WFO...GID...LBF...GLD...BOU...

LAT...LON   39940198 40610215 41590069 40700013 40100070 39940198 

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