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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
400 AM CDT Tue Sep 24 2019

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-242300-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
400 AM CDT Tue Sep 24 2019

This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.

.DAY ONE...Today and Tonight

There is a chance of severe storms this afternoon and evening
across a large part of eastern Nebraska and southwest Iowa. The
atmosphere will become very unstable and there will be a moderate
amount of vertical wind shear. The main hazard is expected to be
large hail, potentially golfball size or larger. Damaging winds
and a tornado or two could also occur with these storms. The
severe weather threat is highest from about 5 pm to 11 pm. Locally
heavy rain amounts of over an inch are possible, but in general
the storms should be progressive. This will somewhat limit the
threat of heavy rain.

Minor to moderate flooding will continue along the Missouri River
above Lewis and Clark Lake, and from near Decatur southward past
Rulo.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Missouri River levels should be falling slowly at all locations
the next few days. Water levels around Decatur and Omaha could
drop to near or below flood stage by Friday or Saturday. Other
sites should remain above flood stage at least into next week.

Additional thunderstorms will be possible from Thursday afternoon
through the weekend. Later outlooks will address the potential for
severe storms in those periods.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon or early this
evening.

$$



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