Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 175, NWS Quad Cities, IA

May 24, 2024Delaware County, Dubuque County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at May 24, 2024, 12:45 PM CDT for Delaware County, Dubuque County, Iowa. It was in force for 32 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 24, 2024, 12:45 PM CDT (17:45 UTC)
Expired
May 24, 2024, 1:17 PM CDT
In force
32 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Delaware County, IA, Dubuque County, IA

The radar

The Quad Cities radar (KDVN), 105 km from the middle of the area, began a volume at 17:44 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, 5.8 hours before the alert went out and 108 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2024-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1392 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2024-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1392 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
771 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.9

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 24, 12:37 PM CDT, 8 minutes earlier.

Area forecast discussion, May 24, 12:37 PM CDT, 8 minutes before
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Hazardous weather outlook, May 24, 3:43 AM CDT, 9 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
343 AM CDT Fri May 24 2024

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-250845-
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-
343 AM CDT Fri May 24 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...TODAY AND TONIGHT

A few rounds of strong to severe thunderstorms are expected today,
with the main rounds coming after sunrise this morning and then
again this afternoon. Nearly the entire area is under a Slight
Risk, or level 2 of 5, for severe weather today, with all hazards
possible. Damaging wind gusts to 70 mph, large hail to the size
of quarters, and a few tornadoes are possible.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Strong to severe thunderstorms are possible Sunday. The best area
for severe thunderstorms will be south of I-80 where portions of
the area are in an Enhanced Risk (level 3 out of 5).

Thunderstorms are possible again on Monday and Tuesday. The
threat for severe weather appears low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely this morning through this afternoon.

GENERAL STORM MOTION OF THE DAY:

Towards the east at 45 to 55 mph this morning, and then to the
east-northeast around 30 to 40 mph this afternoon.

JTS

In the hours before

Local storm report, May 24, 11:16 AM CDT, 1 hour 29 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
1116 AM CDT Fri May 24 2024

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

1102 AM     Hail             Urbana                  42.22N 91.88W
05/24/2024  M0.25 Inch       Benton             IA   Trained Spotter

&&

Haase
Local storm report, May 24, 11:21 AM CDT, 1 hour 24 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
1121 AM CDT Fri May 24 2024

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

1120 AM     Hail             1 NE Maquoketa          42.07N 90.66W
05/24/2024  M0.25 Inch       Jackson            IA   Trained Spotter

&&

Haase
Local storm report, May 24, 11:50 AM CDT, 55 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
1150 AM CDT Fri May 24 2024

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

1120 AM     Hail             Roseville               40.73N 90.66W
05/24/2024  M1.00 Inch       Warren             IL   Fire Dept/Rescue

            Hail slightly bigger than a quarter for 5
            minutes.

&&

Haase
Local storm report, May 24, 12:03 PM CDT, 42 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
1203 PM CDT Fri May 24 2024

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

1120 AM     Hail             1 W Roseville           40.73N 90.67W
05/24/2024  E1.75 Inch       Warren             IL   Trained Spotter

            Golf ball size hail from photo sent from
            trained spotter at their home.

&&

Haase
Local storm report, May 24, 12:30 PM CDT, 15 minutes before
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Local storm report, May 24, 12:32 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.

IssuedProductOfficeCountiesLasted
May 23, 9:08 PM CDTRiver Flood WarningDVNClinton, Scott15 days
May 23, 9:16 PM CDTRiver Flood WatchDVNDes Moines, Louisa47 hr
May 23, 10:07 PM CDTRiver Flood WatchDVNDes Moines, Henry, Lee4 days
May 24, 2:38 AM CDTFlood WatchDVNBenton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more13 hr
May 24, 3:37 AM CDTSevere Thunderstorm WarningDVNJefferson, Keokuk, Washington38 min
May 24, 4:11 AM CDTSevere Thunderstorm WarningDVNIowa, Johnson, Keokuk, Louisa, Washington49 min
May 24, 4:47 AM CDTSevere Thunderstorm WarningDVNLouisa, Muscatine, Washington43 min
May 24, 5:01 AM CDTSevere Thunderstorm WarningDVNJones, Linn44 min
May 24, 5:16 AM CDTSevere Thunderstorm WarningDVNIowa, Keokuk59 min
May 24, 5:54 AM CDTTornado WarningDVNIowa, Keokuk, Washington51 min
May 24, 6:05 AM CDTSevere Thunderstorm Warning Considerable damage threatDVNIowa, Jefferson, Johnson, Keokuk, Washington40 min
May 24, 6:13 AM CDTSevere Thunderstorm WarningDVNBenton, Buchanan, Linn47 min
May 24, 6:29 AM CDTTornado WarningDVNIowa, Johnson, Louisa, Washington46 min
May 24, 6:38 AM CDTSevere Thunderstorm Warning Considerable damage threatDVNCedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 6 more67 min
May 24, 6:45 AM CDTSevere Thunderstorm WarningDVNBenton, Buchanan, Cedar, Delaware, Dubuque, Jones and 1 more60 min
May 24, 7:02 AM CDTTornado WarningDVNCedar, Johnson, Jones, Linn, Muscatine43 min
May 24, 7:08 AM CDTTornado WarningDVNDelaware, Dubuque, Jones, Linn52 min
May 24, 7:32 AM CDTSevere Thunderstorm Warning Considerable damage threatDVNCedar, Clinton, Des Moines, Louisa, Muscatine, Scott58 min
May 24, 7:39 AM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Delaware, Dubuque, Jackson, Jones66 min
May 24, 7:39 AM CDTTornado WarningDVNCedar, Clinton, Jackson, Jones, Scott51 min
May 24, 7:54 AM CDTTornado WarningDVNDubuque, Jackson36 min
May 24, 8:00 AM CDTTornado WarningDVNClinton, Jackson, Scott45 min
May 24, 8:26 AM CDTSevere Thunderstorm WarningDVNClinton, Scott64 min
May 24, 8:27 AM CDTTornado WarningDVNJackson48 min
May 24, 8:37 AM CDTTornado WarningDVNClinton, Jackson53 min
May 24, 8:43 AM CDTSevere Thunderstorm WarningDVNClinton, Jackson47 min
May 24, 10:03 AM CDTSevere Thunderstorm WarningDVNLee42 min
May 24, 10:42 AM CDTSevere Thunderstorm WarningDVNDes Moines, Henry, Louisa, Muscatine22 min
May 24, 1:39 PM CDTSpecial Weather StatementDVNDubuque21 min
May 24, 2:06 PM CDTSpecial Weather StatementDVNDubuque9 min
May 24, 2:33 PM CDTSpecial Weather StatementDVNDubuque, Jones42 min
May 24, 2:48 PM CDTSevere Thunderstorm WarningDVNDubuque, Jackson, Jones42 min
May 24, 3:53 PM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Muscatine, Scott32 min
May 24, 4:45 PM CDTRiver Flood WarningDVNLouisa10 days
May 24, 4:45 PM CDTRiver Flood WarningDVNLouisa10 days
May 24, 4:56 PM CDTRiver Flood WarningDVNCedar, Johnson, Muscatine4 days
May 24, 5:06 PM CDTSpecial Weather StatementDVNClinton, Scott39 min
May 24, 5:30 PM CDTSpecial Weather StatementDVNScott45 min
May 24, 7:50 AM CDTTornado WarningDVNHenry, Rock Island40 min
May 24, 8:24 AM CDTTornado Warning Tornado observedDVNBureau, Henry, Whiteside51 min
May 24, 8:56 AM CDTTornado WarningDVNStephenson49 min
May 24, 9:26 AM CDTSevere Thunderstorm WarningDVNStephenson34 min
May 24, 9:30 AM CDTTornado WarningDVNStephenson20 min
May 24, 11:02 AM CDTSevere Thunderstorm WarningDVNHenderson, Warren28 min
May 24, 11:37 AM CDTTornado WarningDVNHancock, McDonough38 min
May 24, 12:08 PM CDTTornado WarningDVNHancock, McDonough, Warren34 min
May 24, 12:19 PM CDTSevere Thunderstorm WarningDVNMcDonough, Warren30 min
May 24, 2:46 PM CDTSevere Thunderstorm WarningDVNBureau, Henry24 min
May 24, 4:00 PM CDTSevere Thunderstorm WarningDVNBureau, Henry23 min
May 24, 4:21 PM CDTSpecial Weather StatementDVNJo Daviess, Stephenson54 min
May 24, 6:13 PM CDTSpecial Weather StatementDVNWhiteside47 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2024Every 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.