Hail and Damaging Wind in Iowa, September 14, 2019

Area Forecast Discussion
National Weather Service Omaha/Valley NE
626 AM CDT Sat Sep 14 2019

.SHORT TERM...(Today through Monday)
Issued at 247 AM CDT Sat Sep 14 2019

Quiet weather prevailed overnight, with southerly winds and
increasing cloud cover.  Low temperatures ranged from the upper 50s
to mid 60s.

A weak upper level disturbance will continue to move across the
Northern Plains, Saturday, pushing a weak cold front through the
region at the surface. A southwesterly low level jet will promote warm
air advection and a bit of moisture pooling ahead of the front this
morning. This could lead to the development of a few showers and
storms early this morning, generally along a line from around
Columbus to Wayne, NE. Given the weak forcing along this boundary,
there could be a lull in convection early this afternoon as the low
level jet weakens. Peak daytime heating in the late afternoon/early
evening could be enough to re-ignite a few storms ahead of the
front, as highs eventually climb into the mid 80s, and dewpoints
soar into the upper 60s and low 70s. However, the best chance for
thunderstorm activity will be when the low level jet intensifies
once again Sunday evening and overnight. 1500-2000 J/kg of MLCAPE
will be available, in addition to up to 30-40kts of 0-6 km bulk
shear, today. Given these parameters, it wouldn't be out of the
question to see a couple of strong to severe storms capable of
producing strong winds and hail late this afternoon and evening.

Precipitation should move southeast of CWA by early Sunday morning.
An upper ridge will build into the nation's midsection Sunday and
Monday, keeping the forecast area dry.  Highs will remain above
normal, in the upper 80s to around 90 degrees Sunday and Monday.
Dewpoints in the upper 60s will make it feel more like the low to
mid 90s.

.LONG TERM...(Monday night through Friday)
Issued at 247 AM CDT Sat Sep 14 2019

An upper trough will dig into the western CONUS early next week,
eventually ejecting northeast through Montana and North Dakota. The
surface reflection of this system will pull a frontal boundary
through the forecast area Tuesday night.  This feature could linger
in the region, providing several chances for showers and storms
through the latter half of next week.  Highs will remain above
normal, in the upper 80s Tuesday and mid 80s Wednesday, before
gradually dropping into the upper 70s by Friday.

&&

.AVIATION...(For the 12Z TAFS through 12Z Sunday morning)
Issued at 623 AM CDT Sat Sep 14 2019

Scattered showers and thunderstorms will continue to pass through
KOMA and KLNK for the first few hours this morning. Otherwise,
skies should scatter out with VFR conditions continuing into the
evening. Another chance for scattered thunderstorms arrives at the
TAF sites as early as 00z this evening and this chance continues
through 06z.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...None.
IA...None.
&&

SHORT TERM...KG
LONG TERM...KG
AVIATION...Kern

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
303 AM CDT Sat Sep 14 2019

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-142215-
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-
303 AM CDT Sat Sep 14 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

Isolated, non-severe thunderstorms will be possible Saturday
morning over parts of eastern Nebraska.

Storm chances will increase Saturday afternoon, especially late in
the afternoon. Chances will continue in the evening and into Saturday
night. The strongest storms will be capable of hail to quarter
size and wind gusts up to 50 to 60 mph.

Minor flooding is expected along Ponca Creek around Verdel.

Minor flooding will continue along the Missouri River above Lewis
and Clark Lake, and from near Plattsmouth downstream into
Missouri.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Significant rises in water levels are expected along the Missouri
River by next week, as runoff from record flooding in southeast
South Dakota enters the system. This will likely push the
Missouri River above flood stage from near Decatur, southward
into Missouri by next Wednesday. Impacts are possible along
portions of Interstates 29 and 680 in western Iowa. Low lying
areas along the river will experience additional flooding. Though
impacts along the river may be significant, flooding should not
reach the levels that were seen earlier in the year.

The next chance for thunderstorms is from Tuesday night into
Friday. Severe weather potential remains uncertain at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation should not be needed today or tonight.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
840 AM CDT SAT SEP 14 2019

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

0750 AM     HAIL             WEST POINT              41.84N 96.71W
09/14/2019  E1.00 INCH       CUMING             NE   PUBLIC

            SOCIAL MEDIA REPORT.

&&

PF

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
857 AM CDT Sat Sep 14 2019

IAZ043-141415-
Monona IA-
857 AM CDT Sat Sep 14 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MONONA COUNTY UNTIL 915
AM CDT...

At 857 AM CDT, Doppler radar was tracking a strong thunderstorm over
Onawa, or 36 miles southeast of Sioux City, moving east at 35 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Onawa, Castana, Turin, Lewis And Clark State Park and Kennebec.

This includes Interstate 29 between mile markers 107 and 112.

LAT...LON 4198 9579 4195 9613 4197 9613 4198 9616
      4205 9619 4218 9589
TIME...MOT...LOC 1357Z 249DEG 34KT 4202 9609

Albright

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
907 AM CDT Sat Sep 14 2019

NEZ045-141430-
Washington NE-
907 AM CDT Sat Sep 14 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL WASHINGTON COUNTY UNTIL
930 AM CDT...

At 906 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Arlington, or 26 miles northwest of Omaha, moving east
at 25 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Blair.

LAT...LON 4150 9633 4159 9638 4168 9612 4164 9610
      4162 9612 4161 9612 4157 9608 4154 9609
      4152 9607
TIME...MOT...LOC 1406Z 248DEG 23KT 4156 9633

Albright

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
909 AM CDT SAT SEP 14 2019

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

0909 AM     HAIL             ONAWA                   42.03N 96.09W
09/14/2019  E0.88 INCH       MONONA             IA   LAW ENFORCEMENT

&&

PF