Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 5, NWS Des Moines, IA

April 16, 20246 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 16, 2024, 1:02 PM CDT for 6 counties in Iowa. It was in force for 46 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 16, 2024, 1:02 PM CDT (18:02 UTC)
Expired: Apr 16, 2024, 1:48 PM CDT
In force: 46 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 60.0 mph

Counties Jasper County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 82 km from the middle of the area, began a volume at 18:01 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
Apr 16, 10:22 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.0 hours before the alert went out and 218 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: 1439 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 392 m²/s²
0-3 km storm-relative helicity: 424 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 16, 12:59 PM CDT, 3 minutes earlier.

Area forecast discussion, Apr 16, 12:59 PM CDT, 3 minutes before

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Hazardous weather outlook, Apr 16, 4:25 AM CDT, 8 hours 37 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
425 AM CDT Tue Apr 16 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-170930-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
425 AM CDT Tue Apr 16 2024

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Wind Advisory is in effect for the area. Please refer to the
National Weather Service website at weather.gov/desmoines for
further details.

Multiple rounds of thunderstorms are be expected today into
tonight with a Slight (2 out of 5) to Enhanced Risk (3 out of 5)
for severe weather. Large hail, damaging wind gusts, and a few
tornadoes will all be possible, along with locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed at times today into tonight.

In the hours before

Local storm report, Apr 16, 10:56 AM CDT, 2 hours 6 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
1056 AM CDT Tue Apr 16 2024

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

1047 AM     Hail             1 NNE Chariton          41.02N 93.30W
04/16/2024  E0.75 Inch       Lucas              IA   Broadcast Media

            Local media relayed report of penny sized
            hail on NE side of Chariton. Time estimated
            from radar.

&&

Local storm report, Apr 16, 11:40 AM CDT, 1 hour 22 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
1140 AM CDT Tue Apr 16 2024

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

1110 AM     Tornado          2 E Minburn             41.75N 93.99W
04/16/2024                   Dallas             IA   Amateur Radio

            Outbuilding sheet metal scattered in fields.

&&

CAH

Local storm report, Apr 16, 12:13 PM CDT, 49 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
1213 PM CDT Tue Apr 16 2024

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

1105 AM     Tornado          2 WNW Dallas Center     41.70N 94.00W
04/16/2024                   Dallas             IA   Fire Dept/Rescue

            Damage to outbuilding. Time estimated from
            radar.

&&

CAH

Local storm report, Apr 16, 12:23 PM CDT, 39 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
1223 PM CDT Tue Apr 16 2024

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

1215 PM     Hail             2 NNE Floris            40.89N 92.32W
04/16/2024  E0.88 Inch       Davis              IA   Public

&&

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 16, 3:53 AM CDT	Special Weather Statement	DMX	Sac	22 min
Apr 16, 5:11 AM CDT	Special Weather Statement	DMX	Emmet, Palo Alto, Pocahontas	49 min
Apr 16, 9:03 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Ringgold, Taylor, Union	57 min
Apr 16, 11:09 AM CDT	Tornado Warning	DMX	Boone, Dallas	36 min
Apr 16, 11:41 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Franklin, Hamilton, Hardin, Humboldt, Marshall and 4 more	64 min
Apr 16, 11:53 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Wapello	37 min
Apr 16, 12:18 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Wayne	45 min
Apr 16, 1:35 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	40 min
Apr 16, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Monroe, Wapello, Wayne	23 min
Apr 16, 1:58 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Mahaska, Monroe, Poweshiek, Wapello	47 min
Apr 16, 2:05 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy	40 min
Apr 16, 2:25 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis	35 min
Apr 16, 2:36 PM CDT	Tornado Warning Tornado observed	DMX	Calhoun, Humboldt, Pocahontas	39 min
Apr 16, 2:44 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto, Pocahontas	33 min
Apr 16, 2:54 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	51 min
Apr 16, 3:11 PM CDT	Tornado Warning Tornado observed	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	49 min
Apr 16, 3:48 PM CDT	Tornado Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	42 min
Apr 16, 5:00 PM CDT	Tornado Warning	DMX	Emmet, Kossuth, Palo Alto	45 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.