Alert archive / Iowa / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 20, NWS Quad Cities, IA

April 22, 2022Clinton County, Scott County, Iowa; Rock Island County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 22, 2022, 4:07 PM CDT for Clinton County, Scott County, Iowa; Rock Island County, Illinois. It was in force for 23 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: Apr 22, 2022, 4:07 PM CDT (21:07 UTC)
Expired: Apr 22, 2022, 4:30 PM CDT
In force: 23 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Clinton County, IA, Scott County, IA, Rock Island County, IL

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.1 hours before the alert went out and 8 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: 1602 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 553 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 Apr 22, 3:12 PM CDT, 55 minutes earlier.

Area forecast discussion, Apr 22, 3:12 PM CDT, 55 minutes before

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Hazardous weather outlook, Apr 22, 3:18 PM CDT, 49 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
318 PM CDT Fri Apr 22 2022

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-232030-
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-
318 PM CDT Fri Apr 22 2022

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

Thunderstorms will end late this afternoon, as they move east out
of the area. Small hail and brief heavy rain as possible in the
storms.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Saturday: South winds will gust up to 45 mph so high profile
vehicles should use extra caution. With temperatures soaring into
the lower 80s there is the enhanced risk for wind driven grass fires.

Saturday night: A line of thunderstorms, some possibly severe,
will arrive during the evening. There is a slight risk for severe
storms in portions of eastern Iowa. The main risk will be damaging
winds. The storms are expected to weaken farther east overnight.

Monday through Wednesday: Colder temperatures are expected with
the potential for a frost or freeze as nighttime temperatures drop
into the 20s to lower 30s.

.SPOTTER INFORMATION STATEMENT...

Reports of heavy rain over 1 inch, and any flooding that took
place earlier today would be appreciated.

ERVIN

In the hours before

Special weather statement, Apr 22, 3:13 PM CDT, 54 minutes before

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Local storm report, Apr 22, 3:16 PM CDT, 51 minutes before

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Local storm report, Apr 22, 3:37 PM CDT, 30 minutes before

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Local storm report, Apr 22, 3:44 PM CDT, 23 minutes before

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Local storm report, Apr 22, 3:56 PM CDT, 11 minutes before

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Special weather statement, Apr 22, 4:03 PM CDT, 4 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
Apr 21, 9:10 PM CDT	River Flood Watch	DVN	Johnson, Washington	4 days
Apr 21, 9:10 PM CDT	River Flood Watch	DVN	Keokuk	13 hr
Apr 21, 9:10 PM CDT	River Flood Watch	DVN	Clinton, Scott	3 days
Apr 22, 3:07 AM CDT	Flood Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more	12 hr
Apr 22, 6:27 AM CDT	Special Weather Statement	DVN	Benton, Buchanan	63 min
Apr 22, 10:46 AM CDT	River Flood Watch	DVN	Des Moines	7 days
Apr 22, 10:46 AM CDT	River Flood Watch	DVN	Des Moines, Louisa	6 days
Apr 22, 10:46 AM CDT	River Flood Watch	DVN	Des Moines, Lee	6 days
Apr 22, 10:48 AM CDT	Special Weather Statement	DVN	Benton, Iowa, Keokuk, Linn	57 min
Apr 22, 11:11 AM CDT	Flash Flood Warning	DVN	Iowa, Johnson, Keokuk, Louisa, Washington	6 hr
Apr 22, 11:49 AM CDT	Special Weather Statement	DVN	Linn	41 min
Apr 22, 12:05 PM CDT	Flash Flood Warning	DVN	Iowa, Johnson	81 min
Apr 22, 12:22 PM CDT	Flash Flood Warning	DVN	Keokuk	52 min
Apr 22, 1:47 PM CDT	Special Weather Statement	DVN	Johnson	43 min
Apr 22, 3:13 PM CDT	Special Weather Statement	DVN	Cedar, Scott	32 min
Apr 22, 4:03 PM CDT	Special Weather Statement	DVN	Clinton	27 min
Apr 22, 4:29 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	31 min
Apr 22, 11:21 AM CDT	Special Weather Statement	DVN	Whiteside	24 min
Apr 22, 2:29 PM CDT	Special Weather Statement	DVN	Whiteside	46 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2022 Severe Thunderstorm Warnings in Illinois, 2022 Every severe thunderstorm warning in 2022

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.