Alert archive / Iowa / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 222, NWS Quad Cities, IA

July 4, 2026Iowa County, Keokuk County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 4, 2026, 3:29 AM CDT for Iowa County, Keokuk County, Iowa. It was in force for 61 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: Jul 4, 2026, 3:29 AM CDT (08:29 UTC)
Expired: Jul 4, 2026, 4:30 AM CDT
In force: 61 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Iowa County, IA, Keokuk County, IA

The radar

The Quad Cities radar (KDVN), 129 km from the middle of the area, began a volume at 08:29 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.5 hours before the alert went out and 333 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2545 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

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 Jul 4, 2:55 AM CDT, 34 minutes earlier.

Area forecast discussion, Jul 4, 2:55 AM CDT, 34 minutes before

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Hazardous weather outlook, Jul 4, 3:08 AM CDT, 21 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
308 AM CDT Sat Jul 4 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-050815-
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-
308 AM CDT Sat Jul 4 2026

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

Scattered thunderstorms will be possible today. Heavy rain and
gusty winds up to 50 mph will be the primary threats. Repeating
rounds of slow moving storms will bring an elevated risk for flash
flooding.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

Scattered thunderstorms will be possible Sunday. Heavy rain and
gusty winds will be the primary threats. The repeated rounds of
heavy rain will produce rises on some area creeks and tributary
rivers, with a few reaching bankfull or even flood stage through
early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

GROSS

In the hours before

Local storm report, Jul 3, 9:38 PM CDT, 5 hours 51 minutes before

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Local storm report, Jul 3, 10:07 PM CDT, 5 hours 22 minutes before

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Local storm report, Jul 3, 10:34 PM CDT, 4 hours 55 minutes before

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Local storm report, Jul 3, 10:42 PM CDT, 4 hours 47 minutes before

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Local storm report, Jul 3, 11:02 PM CDT, 4 hours 27 minutes before

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Local storm report, Jul 3, 11:03 PM CDT, 4 hours 26 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
Jul 3, 7:08 PM CDT	Special Weather Statement	DVN	Iowa, Keokuk, Washington	52 min
Jul 3, 7:32 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine, Scott	58 min
Jul 3, 7:50 PM CDT	Flash Flood Warning	DVN	Scott	3 hr
Jul 3, 8:37 PM CDT	River Flood Warning	DVN	Cedar, Jones, Linn	4 days
Jul 3, 9:31 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee	59 min
Jul 4, 4:25 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Iowa, Johnson, Linn	65 min
Jul 4, 5:27 AM CDT	Special Weather Statement	DVN	Clinton, Scott	48 min
Jul 4, 9:38 AM CDT	River Flood Warning	DVN	Benton, Iowa	6 days
Jul 4, 10:35 AM CDT	River Flood Warning	DVN	Clinton, Scott	7 days
Jul 4, 6:59 PM CDT	Special Weather Statement	DVN	Dubuque	46 min
Jul 3, 7:04 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Jo Daviess, Stephenson	56 min
Jul 3, 7:23 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Whiteside	39 min
Jul 3, 8:14 PM CDT	Special Weather Statement	DVN	Whiteside	46 min
Jul 3, 8:55 PM CDT	Special Weather Statement	DVN	Bureau, Putnam	65 min
Jul 4, 5:07 AM CDT	Special Weather Statement	DVN	Bureau, Putnam	38 min
Jul 4, 2:00 PM CDT	Special Weather Statement	DVN	Putnam	45 min
Jul 4, 2:58 PM CDT	Flash Flood Warning	DVN	Bureau, Putnam	5 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2026 Every severe thunderstorm warning in 2026

Sources

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