Special Weather Statement, NWS Omaha, NE

Area Forecast Discussion
National Weather Service Omaha/Valley NE
622 PM CDT Tue Jun 19 2018

.SHORT TERM...(Tonight through Friday)
Issued at 300 PM CDT Tue Jun 19 2018

Convection is rather limited early this afternoon, although the
stalled surface boundary is still in place across the region,
stretching from central IA into east central NE then arcing down
towards northwest KS at 19Z. Potential for heavy rain will be the
main forecast concern through the period.

Another round of storms is expected to move into the area tonight
as the next shortwave trough, currently coming out of the central
Rockies, ejects out across the central plains. Precipitable water
remains high and the potential for heavy rain will continue for
the area tonight into Thursday as the upper low over the northern
Rockies moves into the region. SREF shows weak flow spreading over
the region with the upper system resulting in slow storm motion
and the possibility of prolonged heavy rain.

Some areas around Omaha into parts of west central and southwest
Iowa received significant rains during the past 24 hours with
reports of 3 to 5 inches and saturated or near saturated ground.
More heavy rain will be possible tonight so a flash flood watch
has been issued for areas around Omaha arcing down to southwest
of Lincoln in southeast Nebraska along the stalled frontal
boundary. Storms are expected to develop west and south of the
area during the late afternoon then spread north and east during
the evening and overnight hours.

This wet pattern is expected to move east of the area on Friday
with cooler and less humid conditions spreading into the area.

.LONG TERM...(Friday night through Tuesday)
Issued at 300 PM CDT Tue Jun 19 2018

The forecast doesn't stay dry for long however, as another upper
trough begins to drop into the plains region by Saturday with a
reinforcing trough coming in by Monday. These two system will
bring the chance of more storms to the region for the weekend into
early next week.

&&

.AVIATION...(For the 00Z TAFS through 00Z Wednesday evening)
Issued at 620 PM CDT Tue Jun 19 2018

Main area of TSRA in the short term will be across southeast NE
and for this evening should mostly affect KLNK. There is some
chance at both KOMA and KOFK, but later. This will depend on how
the convective systems to the west progress east and evolve. There
have been some MVFR ceilings around today and those will be around
at least at times overnight. Some IFR ceilings are possible,
especially at KOFK. Tried to limit mention of TSRA in the TAFs
when it would not have much impact.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...Flash Flood Watch through Wednesday morning for NEZ044-045-
     051>053-065>068-078-088-089.

IA...Flash Flood Watch through Wednesday morning for IAZ055-056-069-
     079-080-090.

&&

SHORT TERM...Fobert
LONG TERM...Fobert
AVIATION...Miller

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
348 PM CDT Tue Jun 19 2018

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-201100-
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-
348 PM CDT Tue Jun 19 2018

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

.DAY ONE...Tonight and Wednesday

Isolated severe thunderstorms will be possible across much of
eastern Nebraska and southwest Iowa this evening and tonight.
Damaging winds and large hail will be the primary hazards.
Locally heavy rain will also be possible, and some isolated
flooding could occur if storms redevelop over areas that received
3 to 5 inches of rain last night and early this morning.

.DAYS TWO THROUGH SEVEN...Wednesday night through Tuesday

Thunderstorm chances will remain in the forecast Wednesday night
into Thursday night. Occasional periods of heavy rain are
possible. Thunderstorm chances return to part of the area Saturday
and Saturday nigh and continue into early next week.

.SPOTTER INFORMATION STATEMENT...

Storm spotter activation may be needed for parts of the area this
evening.

Fobert

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
701 PM CDT TUE JUN 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     FLASH FLOOD      6 NNW REYNOLDS          40.15N 97.37W
06/19/2018                   JEFFERSON          NE   LAW ENFORCEMENT

            WATER OVER THE ROAD.

&&

DEWALD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
718 PM CDT TUE JUN 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0717 PM     HEAVY RAIN       REYNOLDS                40.06N 97.33W
06/19/2018  M5.00 INCH       JEFFERSON          NE   EMERGENCY MNGR

&&

HD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
720 PM CDT TUE JUN 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0717 PM     HEAVY RAIN       5 SE MALCOLM            40.86N 96.81W
06/19/2018  M2.50 INCH       LANCASTER          NE   EMERGENCY MNGR

&&

DEWALD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
819 PM CDT TUE JUN 19 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0815 PM     FLASH FLOOD      REYNOLDS                40.06N 97.33W
06/19/2018                   JEFFERSON          NE   EMERGENCY MNGR

            REPORTS OF SEVERAL ROADS AND A FEW BRIDGES
            WITH WATER OVER THEM.

&&

HD

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
920 PM CDT TUE JUN 19 2018

NEZ044-045-050>052-200245-
Saunders NE-Butler NE-Washington NE-Douglas NE-Dodge NE-
920 PM CDT TUE JUN 19 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WASHINGTON...
SOUTHEASTERN DODGE...NORTHWESTERN DOUGLAS...EAST CENTRAL BUTLER AND
NORTHERN SAUNDERS COUNTIES UNTIL 945 PM CDT...

At 919 PM CDT, Doppler radar was tracking a strong thunderstorm near
Prague, or 28 miles east of Columbus, moving east at 45 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Fremont, Valley, Arlington, Cedar Bluffs, Inglewood, Prague, Morse
Bluff, Malmo, Leshara, Colon, Linwood, Fremont Lakes State Recreation
Area, Camp Eagle and Camp Cedars.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 4127 9692 4143 9693 4150 9636 4125 9632
TIME...MOT...LOC 0219Z 267DEG 40KT 4135 9681

SMITH