Hazardous Weather Outlook
Issued by NWS Omaha/Valley, NE

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
000
FLUS43 KOAX 280926
HWOOAX

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
426 AM CDT Wed Jun 28 2017

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-282330-
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-
426 AM CDT Wed Jun 28 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

Plentiful low level moisture coupled with daytime heating will
result in quick environmental destabilization this afternoon
over the outlook area. This...coupled with stout deep layer
shear...will create an enhanced risk for severe storms.
Thunderstorm activity is expected to fire along a stalled surface
boundary extending across western Iowa into eastern Nebraska.
Strong instability will allow storms to quickly intensify and
expand in areal coverage through the evening hours.

Storms with large hail will be the initial threat before convection
becomes linear in nature and produces damaging winds. However...there
does appear to be a risk for tornadic storms over southwest Iowa
where low level shear will be most prevalent.


.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Additional chances for severe thunderstorms will come Thursday
afternoon and evening along a boundary meandering across the
outlook area. Large hail and damaging winds will again be the main
threat with storms.

Thunderstorm chances continue Sunday through Monday night in
association with upper level disturbance moving into the region.

.SPOTTER INFORMATION STATEMENT...

Storm spotter activation may be needed later tonight.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.