Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 111, NWS Quad Cities, IA

May 7, 2024Dubuque County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at May 7, 2024, 6:12 PM CDT for Dubuque County, Iowa. It was in force for 18 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 7, 2024, 6:12 PM CDT (23:12 UTC)
Expired: May 7, 2024, 6:30 PM CDT
In force: 18 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Dubuque County, IA

The radar

The Quad Cities radar (KDVN), 99 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 nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.2 hours before the alert went out and 100 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1039 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 7, 2:52 PM CDT, 3 hours 20 minutes earlier.

Area forecast discussion, May 7, 2:52 PM CDT, 3 hours 20 minutes before

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Hazardous weather outlook, May 7, 3:05 PM CDT, 3 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
305 PM CDT Tue May 7 2024

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-082015-
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-
305 PM CDT Tue May 7 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...THIS AFTERNOON AND TONIGHT

Isolated showers and storms are possible late this afternoon into
the early evening. A marginal risk for severe storms continues
along and east of the Mississippi River into this evening.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Wednesday, there is another Marginal Risk for severe storms for
the entire outlook area during the afternoon into the evening.
The main risks will be lightning, strong gusty winds, and hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight but may be needed
again on Wednesday.

GENERAL STORM MOTION OF THE DAY:

Toward the northeast around 50 mph.

DC

In the hours before

Local storm report, May 7, 4:36 PM CDT, 1 hour 36 minutes before

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Special weather statement, May 7, 4:58 PM CDT, 1 hour 14 minutes before

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Special weather statement, May 7, 5:29 PM CDT, 43 minutes before

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Special weather statement, May 7, 5:30 PM CDT, 42 minutes before

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Special weather statement, May 7, 5:58 PM CDT, 14 minutes before

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Special weather statement, May 7, 5:59 PM CDT, 13 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 7, 2:17 AM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk, Van Buren, Washington	58 min
May 7, 2:56 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa	49 min
May 7, 3:22 AM CDT	Special Weather Statement	DVN	Henry, Jefferson, Keokuk, Lee, Van Buren, Washington	38 min
May 7, 3:51 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Henry, Johnson, Louisa, Muscatine, Washington	39 min
May 7, 4:26 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Des Moines, Johnson, Louisa, Muscatine and 1 more	45 min
May 7, 5:16 AM CDT	Special Weather Statement	DVN	Clinton, Scott	44 min
May 7, 3:42 PM CDT	Special Weather Statement	DVN	Buchanan	33 min
May 7, 3:51 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	39 min
May 7, 4:30 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	60 min
May 7, 4:58 PM CDT	Special Weather Statement	DVN	Muscatine	47 min
May 7, 5:30 PM CDT	Special Weather Statement	DVN	Dubuque	45 min
May 7, 5:58 PM CDT	Special Weather Statement	DVN	Jackson	47 min
May 7, 5:50 AM CDT	Special Weather Statement	DVN	Jo Daviess	25 min
May 7, 6:03 AM CDT	Special Weather Statement	DVN	Bureau, Putnam	42 min
May 7, 6:10 AM CDT	Special Weather Statement	DVN	Carroll, Stephenson, Whiteside	35 min
May 7, 12:19 PM CDT	Special Weather Statement	DVN	Whiteside	41 min
May 7, 12:29 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Whiteside	30 min
May 7, 12:41 PM CDT	Special Weather Statement	DVN	Stephenson	34 min
May 7, 5:29 PM CDT	Special Weather Statement	DVN	Rock Island	46 min
May 7, 5:59 PM CDT	Special Weather Statement	DVN	Henry	46 min
May 7, 6:23 PM CDT	Special Weather Statement	DVN	Stark	52 min
May 7, 6:30 PM CDT	Special Weather Statement	DVN	Bureau	45 min
May 7, 6:52 PM CDT	Severe Thunderstorm Warning	DVN	Bureau	37 min
May 7, 6:58 PM CDT	Special Weather Statement	DVN	Bureau, Putnam	47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.