Regional Weather Summary
Issued by NWS Omaha/Valley, NE

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AWUS83 KOAX 121538

Weather Summary for Eastern Nebraska and Southwest Iowa
National Weather Service Omaha/Valley NE
1038 AM CDT Sat Aug 12 2017

After morning lows in the 50s over a majority of eastern Nebraska
and southwest Iowa, temperatures had climbed into the lower 70s by 10
AM at most locations. Plenty of sunshine and light southerly breezes
helped in that early day warming.

A low pressure system in the upper levels of the atmosphere is
forecast to drop south from the Canadian border into the Dakotas
today and tonight. Also, surface low pressure deepening in the High
Plains will promote southerly winds across the Plains, helping to
draw moisture from the south into Middle America. The interaction of
the upper level system from the north and moisture returning from the
south will lead to shower and thunderstorm chances across a good part
of the region.

Thunderstorms had already fired in central South Dakota early in the
day, and will affect eastern South Dakota this afternoon. More
development to the south and west across the rest of South Dakota and
into western and central parts of Nebraska and Kansas is expected
during the afternoon. Some severe storms with large hail and damaging
winds could occur from western South Dakota into western Kansas.
Then overnight, a gradual eastward movement of the thunderstorm area
is forecast. Areas from southern Minnesota through northwest Iowa,
the eastern half of Nebraska and much of Kansas could see showers and
thunderstorms tonight.

Otherwise skies are forecast to be partly cloudy outside of
precipitation areas, with temperatures remaining below normal mid-
August levels. Look for highs this afternoon to reach the upper 70s
to lower 80s over a good part of Mid America, with lows tonight in
the 50s to lower 60s.

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