Hazardous Weather Outlook
Issued by NWS Omaha/Valley, NE

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FLUS43 KOAX 170856
HWOOAX

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
356 AM CDT Mon Apr 17 2017

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-172300-
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-
356 AM CDT Mon Apr 17 2017

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 for thunderstorms after midnight tonight over
most of eastern Nebraska, with the chance closer to sunrise in
southwest Iowa. Severe thunderstorms are not anticipated, however
a few strong storms with small hail could occur in northeast
Nebraska.

A storm system moving across the Northern Plains will push a cold
front into eastern Nebraska tonight, sparking the chance for
thunderstorms.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Strong to severe thunderstorms are possible over much of eastern
Nebraska and southwest Iowa Tuesday night, and mainly over
southwest Iowa and southeast Nebraska Wednesday afternoon and
evening.

The cold front bringing the chance for thunderstorms tonight will
stall over northern Kansas Tuesday evening, then lift back north
Tuesday night. Unstable air forced over the front with an
increasing low level jet Tuesday night may lead to strong to
severe thunderstorms just about anywhere in the outlook area.
Large hail would be the primary severe threat with these storms.

The frontal boundary is forecast to then sweep back to the
southeast Wednesday afternoon as a mid level storm system passes
by. Unstable air and strong shear is expected to develop ahead of
the front in southeast Nebraska and southwest Iowa, fueling
potentially severe thunderstorms as the front moves into that area
Wednesday afternoon and evening.

More isolated thunderstorms are possible Friday and Saturday as
another storm system passes to our south.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$



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