ZCZC SPCSWOMCD ALL
ACUS11 KWNS 140046 
SPC MCD 140046 
NEZ000-140215-

MESOSCALE DISCUSSION 1676
NWS STORM PREDICTION CENTER NORMAN OK
0746 PM CDT THU AUG 13 2015

AREAS AFFECTED...CNTRL THROUGH SCNTRL NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 487...

VALID 140046Z - 140215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 487
CONTINUES.

SUMMARY...DAMAGING WIND AND LARGE HAIL REMAIN PROBABLE NEXT COUPLE
HOURS AS CLUSTER OF STORMS MOVES SWD THROUGH CNTRL AND SCNTRL NEB.
SEVERE THREAT IS EXPECTED TO PERSIST THROUGH 03Z...FOLLOWED BY A
WEAKENING TREND.

DISCUSSION...STORMS OVER CNTRL NEB ARE MOVING SWD AT 25-30 KT. A FEW
SUPERCELL STRUCTURES PERSIST WITHIN AN ENVIRONMENT CHARACTERIZED BY
30-35 KT EFFECTIVE BULK SHEAR AND MODERATE INSTABILITY BASED ON 00Z
NORTH PLATTE RAOB. HOWEVER...TREND HAS BEEN FOR STORMS TO MERGE INTO
A SMALL MCS...AND ACTIVITY WILL LIKELY CONTINUE DEVELOPING SWD NEXT
FEW HOURS SUPPORTED BY CONVERGENCE ALONG THE OUTFLOW BOUNDARY.
CONVECTIVE INHIBITION WILL GRADUALLY INCREASE AS THE SFC LAYER
BEGINS TO COOL WHICH...IN CONJUNCTION WITH ABSENCE OF A LLJ...SHOULD
PROMOTE A GRADUAL WEAKENING TREND BY 03Z. IN THE MEANTIME...THE
STRONGER STORMS WILL REMAIN CAPABLE OF PRODUCING DAMAGING WIND AND
HAIL.

..DIAL.. 08/14/2015

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

ATTN...WFO...GID...LBF...

LAT...LON   41290113 41690050 41949948 41219940 40759979 40770111
            41290113 

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