Alert archive / Iowa / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 162, NWS Quad Cities, IA

September 19, 2022Lee County, Van Buren County, Iowa; Hancock County, Illinois; Clark County, Missouri

NWS Quad Cities, IA issued this severe thunderstorm warning at Sep 19, 2022, 12:49 AM CDT for Lee County, Van Buren County, Iowa; Hancock County, Illinois; Clark County, Missouri. It was in force for 56 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: Sep 19, 2022, 12:49 AM CDT (05:49 UTC)
Expired: Sep 19, 2022, 1:45 AM CDT
In force: 56 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Lee County, IA, Van Buren County, IA, Hancock County, IL, Clark County, MO

The radar

The Quad Cities radar (KDVN), 145 km from the middle of the area, began a volume at 05:52 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 00:00Z, 5.8 hours before the alert went out and 149 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: 2099 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1026 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.1

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 Sep 19, 12:34 AM CDT, 15 minutes earlier.

Area forecast discussion, Sep 19, 12:34 AM CDT, 15 minutes before

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Hazardous weather outlook, Sep 18, 3:28 AM CDT, 21 hours 21 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
328 AM CDT Sun Sep 18 2022

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-190830-
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-
328 AM CDT Sun Sep 18 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...TODAY AND TONIGHT

There is an enhanced risk of severe thunderstorms late this
afternoon and evening for areas south of a line from Belle Plaine
Iowa through the Quad Cities. All severe weather hazards will be
possible including large hail, damaging wind, and a few tornadoes.
In addition, heavy rain may bring a localized flash flood threat
to southeast Iowa, northeast Missouri, and west central Illinois.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Hot and humid conditions are forecast Tuesday, with afternoon
heat indices in the mid to upper 90s.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening and tonight.

GROSS

In the hours before

Local storm report, Sep 18, 9:37 PM CDT, 3 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
937 PM CDT SUN SEP 18 2022

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

0915 PM     HAIL             DURANT                  41.60N 90.91W
09/18/2022  M2.50 INCH       CEDAR              IA   BROADCAST MEDIA

&&

PS

Special weather statement, Sep 18, 11:25 PM CDT, 1 hour 24 minutes before

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Local storm report, Sep 18, 11:50 PM CDT, 59 minutes before

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Local storm report, Sep 18, 11:51 PM CDT, 58 minutes before

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Local storm report, Sep 19, 12:41 AM CDT, 8 minutes before

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Special weather statement, Sep 19, 12:41 AM CDT, 8 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
Sep 18, 7:19 PM CDT	Tornado Warning	DVN	Van Buren	41 min
Sep 18, 7:55 PM CDT	Severe Thunderstorm Warning	DVN	Johnson	35 min
Sep 18, 8:08 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Linn	36 min
Sep 18, 8:30 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	45 min
Sep 18, 8:34 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson	26 min
Sep 18, 8:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Cedar, Muscatine, Scott	32 min
Sep 18, 9:15 PM CDT	Severe Thunderstorm Warning	DVN	Scott	45 min
Sep 18, 9:29 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	15 min
Sep 18, 11:25 PM CDT	Special Weather Statement	DVN	Lee	35 min
Sep 18, 11:32 PM CDT	Severe Thunderstorm Warning	DVN	Lee	19 min
Sep 19, 12:41 AM CDT	Special Weather Statement	DVN	Lee	34 min
Sep 19, 2:23 AM CDT	Severe Thunderstorm Warning	DVN	Lee	52 min
Sep 19, 2:33 AM CDT	Severe Thunderstorm Warning	DVN	Van Buren	13 min
Sep 18, 8:18 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry	42 min
Sep 18, 9:37 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	53 min
Sep 18, 9:47 PM CDT	Severe Thunderstorm Warning	DVN	Henry	28 min
Sep 18, 9:47 PM CDT	Tornado Warning	DVN	Hancock	28 min
Sep 18, 10:11 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry	34 min
Sep 18, 10:30 PM CDT	Tornado Warning	DVN	Bureau, Putnam	15 min
Sep 19, 1:41 AM CDT	Severe Thunderstorm Warning	DVN	Hancock	14 min
Sep 18, 8:48 PM CDT	Tornado Warning	DVN	Scotland	57 min
Sep 18, 9:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Clark, Scotland	19 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2022 Severe Thunderstorm Warnings in Illinois, 2022 Severe Thunderstorm Warnings in Missouri, 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; radar from the NEXRAD Level II archive.