Alert archive / Iowa / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 165, NWS Omaha, NE

June 22, 2017Mills County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jun 22, 2017, 10:50 PM CDT for Mills 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 22, 2017, 10:50 PM CDT (03:50 UTC)
Expired: Jun 22, 2017, 11:15 PM CDT
In force: 25 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

County Mills County, IA

The radar

The Omaha radar (KOAX), 70 km from the middle of the area, began a volume at 03:50 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.

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 22, 6:18 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Jun 22, 6:18 PM CDT, 4 hours 32 minutes before

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Hazardous weather outlook, Jun 22, 9:15 PM CDT, 1 hour 35 minutes before

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In the hours before

Special weather statement, Jun 22, 10:05 PM CDT, 45 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
1005 PM CDT THU JUN 22 2017

NEZ068-090-091-230345-
Otoe NE-Johnson NE-Nemaha NE-
1005 PM CDT THU JUN 22 2017

...Special Weather Statement...

At 1005 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles east of Douglas, or 25 miles southeast of Lincoln, moving
southeast at 25 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Syracuse, Cook, Talmage, Lorton and Brock.

LAT...LON 4059 9637 4068 9632 4062 9600 4052 9593
      4042 9600 4043 9614
TIME...MOT...LOC 0305Z 299DEG 20KT 4059 9631

MAYES

Special weather statement, Jun 22, 10:39 PM CDT, 11 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
1039 PM CDT THU JUN 22 2017

IAZ069-079-NEZ053-067-230430-
Pottawattamie IA-Mills IA-Cass NE-Sarpy NE-
1039 PM CDT THU JUN 22 2017

...Significant Weather Advisory for MILLS...SOUTH CENTRAL
POTTAWATTAMIE...SOUTHEASTERN SARPY AND NORTHEASTERN CASS COUNTIES
UNTIL 1130 PM CDT...

At 1039 PM CDT, Doppler radar was tracking a strong thunderstorm over
Pacific Junction, or 20 miles southeast of Omaha, moving northeast at
25 mph.

Dime size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Plattsmouth, Glenwood, Malvern, Treynor, Pacific Junction, Macedonia,
Silver City, Henderson, Hastings and Old Town Park.

This includes the following highways...
 Highway 34 in Iowa between mile markers 1 and 23.
 Highway 59 in Iowa near mile marker 37.
 Highway 75 in Nebraska near mile marker 73.
 Interstate 29 between mile markers 29 and 37.

LAT...LON 4093 9585 4103 9592 4124 9563 4121 9544
      4111 9539 4099 9545
TIME...MOT...LOC 0339Z 245DEG 21KT 4102 9579

MAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 10:05 PM CDT	Special Weather Statement	OAX	Otoe	40 min
Jun 22, 11:44 PM CDT	Special Weather Statement	OAX	Richardson	46 min
Jun 23, 12:07 AM CDT	Special Weather Statement	OAX	Richardson	23 min
Jun 23, 12:46 AM CDT	Special Weather Statement	OAX	Nemaha	44 min
Jun 23, 1:36 AM CDT	Special Weather Statement	OAX	Richardson	39 min
Jun 22, 10:39 PM CDT	Special Weather Statement	OAX	Mills	51 min
Jun 23, 12:21 AM CDT	Special Weather Statement	OAX	Pottawattamie	24 min
Jun 23, 12:41 AM CDT	Special Weather Statement	OAX	Pottawattamie	34 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.