Alert archive / Iowa / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 140, NWS Omaha, NE

June 15, 2017Fremont County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jun 15, 2017, 8:50 PM CDT for Fremont County, Iowa. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 2017, 8:50 PM CDT (01:50 UTC)
Expired: Jun 15, 2017, 9:15 PM CDT
In force: 25 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Fremont County, IA

The radar

The Omaha radar (KOAX), 90 km from the middle of the area, began a volume at 01:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 6:39 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 3:28 PM CDT, 5 hours 22 minutes earlier.

Area forecast discussion, Jun 15, 3:28 PM CDT, 5 hours 22 minutes before

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Hazardous weather outlook, Jun 15, 3:45 PM CDT, 5 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
345 PM CDT Thu Jun 15 2017

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-161045-
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-
345 PM CDT Thu Jun 15 2017

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 FRIDAY

There is a slight risk for severe thunderstorms this evening,
mainly south of Interstate 80. Large hail will be the primary
hazard.

More severe thunderstorms are possible Friday across all of
eastern Nebraska and southwest Iowa. Large hail and damaging winds
will be the primary hazards.

A weak frontal boundary will slide southeast of I-80 late this
afternoon, and encounter a moist and unstable airmass. The front
will likely trigger scattered thunderstorms by 7 PM in areas south
of Interstate 80, with some of the stronger storms potentially
producing large hail. Most of this activity will move off to the
east and southeast late this evening.

During the day Friday, the atmosphere is expected to become very
unstable once again. A frontal boundary pushed east by an upper
level impulse will be primary focus for thunderstorms development
in the early afternoon across northeast Nebraska. Storms will
continue to fire along that front through the afternoon and
evening as it moves east and southeast across the rest of eastern
Nebraska and into southwest Iowa.

.DAYS TWO THROUGH SEVEN...FRIDAY NIGHT THROUGH THURSDAY

Potentially severe thunderstorms will continue across most of
eastern Nebraska and southwest Iowa during the evening, with the
activity moving off to the east after midnight.

Thunderstorms are possible on Saturday afternoon and evening,
especially along and south of Interstate 80. Some severe storms
are again possible with this activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight or Friday.

In the hours before

Special weather statement, Jun 15, 6:09 PM CDT, 2 hours 41 minutes before

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Special weather statement, Jun 15, 6:15 PM CDT, 2 hours 35 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
615 PM CDT THU JUN 15 2017

IAZ079-NEZ067-152345-
Mills IA-Cass NE-
615 PM CDT THU JUN 15 2017

...Significant Weather Advisory for MILLS AND EAST CENTRAL CASS
COUNTIES UNTIL 645 PM CDT...

At 615 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pacific Junction, or 18 miles southeast of Omaha, moving east at 20
mph.

Dime size hail will be possible with this storm.

Locations impacted include...
Glenwood, Malvern, Pacific Junction, Silver City and Hastings.

This includes the following highways...
 Highway 34 in Iowa between mile markers 1 and 23.
 Interstate 29 between mile markers 29 and 37.

LAT...LON 4095 9584 4107 9586 4115 9544 4092 9540
TIME...MOT...LOC 2315Z 263DEG 17KT 4103 9585

MEAD

Local storm report, Jun 15, 6:44 PM CDT, 2 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
644 PM CDT THU JUN 15 2017

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

0625 PM     HAIL             3 E THURMAN             40.82N 95.69W
06/15/2017  M0.50 INCH       FREMONT            IA   PUBLIC

            QUARTER INCH TO HALF INCH SIZE HAIL

&&

KRG

Special weather statement, Jun 15, 6:47 PM CDT, 2 hours 3 minutes before

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Local storm report, Jun 15, 6:53 PM CDT, 1 hour 57 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 7:11 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline	34 min
Jun 15, 7:39 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline	36 min
Jun 15, 7:49 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	26 min
Jun 15, 7:53 PM CDT	Severe Thunderstorm Warning	OAX	Gage	37 min
Jun 15, 8:07 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Lancaster, Otoe	23 min
Jun 15, 8:33 PM CDT	Flash Flood Warning	OAX	Jefferson, Saline	3 hr
Jun 15, 11:14 PM CDT	Areal Flood Warning	OAX	Jefferson, Saline	12 hr
Jun 16, 3:54 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox, Pierce	38 min
Jun 16, 4:15 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Pierce	45 min
Jun 16, 4:44 PM CDT	Tornado Warning	OAX	Madison, Pierce	31 min
Jun 16, 4:57 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Stanton, Thurston, Wayne	48 min
Jun 16, 5:10 PM CDT	Tornado Warning	OAX	Madison, Pierce, Stanton	35 min
Jun 16, 5:15 PM CDT	Tornado Warning	OAX	Cuming, Pierce, Stanton, Wayne	30 min
Jun 16, 5:32 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison	28 min
Jun 16, 5:42 PM CDT	Tornado Warning	OAX	Colfax, Cuming, Madison, Platte, Stanton	33 min
Jun 16, 5:44 PM CDT	Tornado Warning	OAX	Cuming, Stanton	31 min
Jun 16, 5:58 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison, Platte	32 min
Jun 16, 6:05 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge	25 min
Jun 16, 6:09 PM CDT	Tornado Warning	OAX	Boone, Madison, Platte	16 min
Jun 16, 6:13 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Cuming, Dodge, Platte, Stanton	47 min
Jun 16, 6:18 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	42 min
Jun 16, 6:23 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Madison, Platte	52 min
Jun 16, 6:27 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge, Washington	48 min
Jun 16, 6:47 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Butler, Colfax, Dodge, Saunders, Washington	28 min
Jun 15, 7:10 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	35 min
Jun 15, 7:16 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	29 min
Jun 15, 7:22 PM CDT	Severe Thunderstorm Warning	OAX	Page	23 min
Jun 15, 7:55 PM CDT	Severe Thunderstorm Warning	OAX	Page	35 min
Jun 15, 8:10 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	35 min
Jun 15, 8:25 PM CDT	Severe Thunderstorm Warning	OAX	Page	35 min
Jun 15, 8:42 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	33 min
Jun 15, 8:55 PM CDT	Severe Thunderstorm Warning	OAX	Page	35 min
Jun 15, 9:05 PM CDT	Flash Flood Warning	OAX	Page	3 hr
Jun 15, 9:20 PM CDT	Special Weather Statement	OAX	Fremont	25 min
Jun 15, 10:17 PM CDT	Special Weather Statement	OAX	Page	28 min
Jun 15, 10:26 PM CDT	Special Weather Statement	OAX	Montgomery	34 min
Jun 15, 10:27 PM CDT	Special Weather Statement	OAX	Fremont	33 min
Jun 15, 10:47 PM CDT	Special Weather Statement	OAX	Mills	28 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.