Alert archive / Illinois / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 138, NWS Quad Cities, IA

August 18, 2025Bureau County, Henry County, Whiteside County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Aug 18, 2025, 6:11 PM CDT for Bureau County, Henry County, Whiteside County, Illinois. It was in force for 79 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: Aug 18, 2025, 6:11 PM CDT (23:11 UTC)
Expired: Aug 18, 2025, 7:30 PM CDT
In force: 79 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bureau County, IL, Henry County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 61 km from the middle of the area, began a volume at 23:12 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
Aug 18, 12:13 PM CDT	Severe Thunderstorm Watch	SPC	9 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 Aug 18, 2:16 PM CDT, 3 hours 55 minutes earlier.

Area forecast discussion, Aug 18, 2:16 PM CDT, 3 hours 55 minutes before

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Hazardous weather outlook, Aug 18, 4:17 AM CDT, 13 hours 54 minutes before

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In the hours before

Special weather statement, Aug 18, 4:58 PM CDT, 1 hour 13 minutes before

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Local storm report, Aug 18, 5:22 PM CDT, 49 minutes before

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Special weather statement, Aug 18, 5:34 PM CDT, 37 minutes before

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Local storm report, Aug 18, 5:53 PM CDT, 18 minutes before

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Local storm report, Aug 18, 6:03 PM CDT, 8 minutes before

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Local storm report, Aug 18, 6:04 PM CDT, 7 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
Aug 17, 7:46 PM CDT	Special Weather Statement	DVN	Delaware, Dubuque, Jones	74 min
Aug 17, 8:58 PM CDT	Special Weather Statement	DVN	Cedar, Clinton	62 min
Aug 17, 9:26 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jones, Scott	64 min
Aug 17, 9:57 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	44 min
Aug 18, 3:03 AM CDT	Heat Advisory	DVN	Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 4 more	16 hr
Aug 18, 4:17 PM CDT	Special Weather Statement	DVN	Muscatine, Scott	43 min
Aug 18, 4:34 PM CDT	Special Weather Statement	DVN	Jackson	41 min
Aug 18, 6:20 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	55 min
Aug 17, 7:07 PM CDT	Special Weather Statement	DVN	Putnam	53 min
Aug 17, 7:20 PM CDT	Flash Flood Warning	DVN	Bureau, Putnam	2 hr
Aug 18, 12:07 PM CDT	Special Weather Statement	DVN	Stephenson	68 min
Aug 18, 4:55 PM CDT	Special Weather Statement	DVN	Mercer, Rock Island	35 min
Aug 18, 4:58 PM CDT	Special Weather Statement	DVN	Jo Daviess	47 min
Aug 18, 5:25 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Rock Island, Whiteside	65 min
Aug 18, 5:34 PM CDT	Special Weather Statement	DVN	Carroll, Stephenson	56 min
Aug 18, 5:50 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Mercer, Warren	70 min
Aug 18, 5:53 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Jo Daviess, Stephenson, Whiteside	52 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2025 Every severe thunderstorm warning in 2025

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.