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SPC MD 1757

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MD 1757 CONCERNING SEVERE THUNDERSTORM WATCH 586... FOR WESTERN NEBRASKA
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Mesoscale Discussion 1757
NWS Storm Prediction Center Norman OK
0532 AM CDT Fri Aug 16 2019

Areas affected...western Nebraska

Concerning...Severe Thunderstorm Watch 586...

Valid 161032Z - 161100Z

The severe weather threat for Severe Thunderstorm Watch 586
continues.

SUMMARY...Thunderstorms continue this morning across the region. The
initial round of severe thunderstorms continues to weaken, while new
thunderstorms develop in their wake. On the whole, the severe threat
is diminishing and a new watch is not anticipated.

DISCUSSION...The initial round of severe thunderstorms continues to
weaken this morning as they move southeast into a more hostile
thermodynamic environment. Despite this more hostile environment,
the thunderstorm across Keith County, Nebraska, remains capable of
producing severe hail. This threat may persist for another 1-2
hours.

Additional thunderstorms have formed across the Nebraska Panhandle
in the wake of the initial round of storms. Although deep-layer
shear supports thunderstorm organization, instability is modest in
the wake of earlier convection. Thus, although hail cannot be ruled
out, expectations are that it should remain near and below severe
thresholds.

Given the potential for the aforementioned severe thunderstorm over
Keith County, Nebraska, to persist past the expiration of Severe
Thunderstorm Watch #0586, a local extension in time may be needed
for areas downstream. However, the severe threat across the
remainder of the watch will be limited and thus the watch will be
allowed to expire at the top of the hour. A new watch is not
anticipated.

..Marsh.. 08/16/2019

...Please see www.spc.noaa.gov for graphic product...

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

LAT...LON   41250172 41330048 40489999 40690157 41250172 

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