Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 126, NWS Quad Cities, IA

May 21, 2024Iowa County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at May 21, 2024, 11:51 AM CDT for Iowa County, Iowa. It was in force for 54 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: May 21, 2024, 11:51 AM CDT (16:51 UTC)
Expired: May 21, 2024, 12:45 PM CDT
In force: 54 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Iowa County, IA

The radar

The Quad Cities radar (KDVN), 124 km from the middle of the area, began a volume at 16:51 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
May 21, 6:15 AM CDT	Severe Thunderstorm Watch	SPC	7 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 Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 5:38 AM CDT, 6 hours 13 minutes earlier.

Area forecast discussion, May 21, 5:38 AM CDT, 6 hours 13 minutes before

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Hazardous weather outlook, May 21, 4:15 AM CDT, 7 hours 36 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
415 AM CDT Tue May 21 2024

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-220915-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
415 AM CDT Tue May 21 2024

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

There is a Moderate Risk, or a level 4 out of 5 for severe
weather today for the entire outlook area. All severe hazards will
be possible including damaging winds of 60 to 80 mph, tornadoes,
and large hail. In addition, repeated rounds of thunderstorms may
bring an isolated flash flood risk and ponding of water.

Portions of the Cedar, Skunk, and Wapsipinicon rivers are
experiencing flooding. Please see the latest Flood Statements and
Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed today and tonight.

GENERAL STORM MOTION OF THE DAY:

To the northeast at 55 mph.

Gross

In the hours before

Local storm report, May 21, 6:52 AM CDT, 4 hours 59 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
652 AM CDT Tue May 21 2024

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

0637 AM     Hail             5 NNW Belle Plaine      41.97N 92.30W
05/21/2024  M0.50 Inch       Benton             IA   Trained Spotter

&&

GROSS

Local storm report, May 21, 7:58 AM CDT, 3 hours 53 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
758 AM CDT Tue May 21 2024

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

0710 AM     Rain             Belle Plaine            41.90N 92.28W
05/21/2024  M1.50 Inch       Benton             IA   Trained Spotter

            Intense rainfall that fell mainly from 630
            AM up to just before the time of report.

&&

12

Special weather statement, May 21, 8:46 AM CDT, 3 hours 5 minutes before

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Special weather statement, May 21, 10:54 AM CDT, 57 minutes before

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 7:43 PM CDT	River Flood Watch	DVN	Benton, Iowa	14 hr
May 20, 7:47 PM CDT	River Flood Watch	DVN	Keokuk	3 hr
May 20, 7:47 PM CDT	River Flood Watch	DVN	Clinton, Scott	3 days
May 20, 10:17 PM CDT	River Flood Warning	DVN	Keokuk	7 days
May 21, 1:45 AM CDT	Flood Watch	DVN	Benton, Buchanan, Delaware, Iowa, Johnson, Linn	19 hr
May 21, 6:21 AM CDT	Severe Thunderstorm Warning	DVN	Benton	39 min
May 21, 6:51 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Linn	28 min
May 21, 8:46 AM CDT	Special Weather Statement	DVN	Jones	44 min
May 21, 9:40 AM CDT	River Flood Warning	DVN	Benton, Iowa	14 days
May 21, 10:54 AM CDT	Special Weather Statement	DVN	Benton, Buchanan, Delaware, Dubuque, Linn	51 min
May 21, 10:56 AM CDT	River Flood Watch	DVN	Cedar, Jones, Linn	6 days
May 21, 12:34 PM CDT	Flash Flood Warning	DVN	Iowa	4 hr
May 21, 12:43 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	29 min
May 21, 1:16 PM CDT	Special Weather Statement	DVN	Johnson, Jones, Linn	59 min
May 21, 2:52 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones	43 min
May 21, 3:28 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque	33 min
May 21, 5:21 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	39 min
May 21, 5:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Benton, Buchanan	47 min
May 21, 5:54 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones	51 min
May 21, 5:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Henry, Jefferson, Van Buren, Washington	33 min
May 21, 6:02 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Jones	43 min
May 21, 6:05 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Des Moines, Henry, Lee, Louisa, Van Buren	25 min
May 21, 6:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Benton, Iowa, Johnson, Keokuk	42 min
May 21, 6:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Benton, Buchanan, Delaware, Linn	51 min
May 21, 6:29 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque	31 min
May 21, 6:32 PM CDT	Tornado Warning	DVN	Benton, Buchanan	28 min
May 21, 6:38 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Johnson, Louisa, Muscatine, Scott	52 min
May 21, 6:43 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	47 min
May 21, 6:47 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Jackson	43 min
May 21, 6:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Benton, Buchanan, Delaware, Johnson, Jones, Linn	38 min
May 21, 6:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Cedar, Clinton, Jackson, Jones	50 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2024 Every severe thunderstorm warning in 2024

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.