Alert archive / Iowa / Tornado Warnings in 2024

Tornado Warning 41, NWS Des Moines, IA

May 21, 20244 counties in Iowa

NWS Des Moines, IA issued this tornado warning at May 21, 2024, 3:35 PM CDT for 4 counties in Iowa. It was in force for 40 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 21, 2024, 3:35 PM CDT (20:35 UTC)
Expired: May 21, 2024, 4:15 PM CDT
In force: 40 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Observed
Damage threat: Considerable
Hail: 1.0 in

Counties Adair County, IA, Dallas County, IA, Guthrie County, IA, Madison County, IA

The radar

The Des Moines radar (KDMX), 70 km from the middle of the area, began a volume at 20:37 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.

What was reported inside it

Time	Report	Where	Remark
May 21, 3:40 PM CDT	TORNADO	3 E Fontanelle, IA	Reported by Trained Spotter.
May 21, 3:45 PM CDT	TORNADO	Greenfield, IA	Damage in Greenfield.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this tornado warning; the first came 5 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 21, 1:14 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.6 hours before the alert went out and 284 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: 1197 J/kg
Mixed-layer CIN: -325 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 562 m²/s²
0-3 km storm-relative helicity: 663 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

523 
WFUS53 KDMX 212035
TORDMX
IAC001-049-077-121-212115-
/O.NEW.KDMX.TO.W.0041.240521T2035Z-240521T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
335 PM CDT Tue May 21 2024

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Northwestern Madison County in south central Iowa...
  Southeastern Guthrie County in west central Iowa...
  Southwestern Dallas County in central Iowa...
  Central Adair County in southwestern Iowa...

* Until 415 PM CDT.

* At 334 PM CDT, a confirmed large and extremely dangerous tornado
  was located over Nodaway Park, or 5 miles southwest of Greenfield,
  moving northeast at 55 mph.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

  HAZARD...Damaging tornado.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...You are in a life-threatening situation. Flying debris 
           may be deadly to those caught without shelter. Mobile 
           homes will be destroyed. Considerable damage to homes, 
           businesses, and vehicles is likely and complete 
           destruction is possible.

* The tornado will be near...
  Greenfield, Nodaway Park, and Greenfield Municipal Airport around 
  340 PM CDT.
  Stuart around 350 PM CDT.
  Dexter and Diamondhead Lake around 355 PM CDT.
  Redfield around 400 PM CDT.
  Linden around 405 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Redfield, Diamondhead Lake, Fontanelle, Menlo, Linden, Greenfield
Municipal Airport, Nodaway Park, and Dexter.

This includes Interstate 80 between mile markers 85 and 102.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4119 9451 4123 9461 4168 9438 4158 9407
TIME...MOT...LOC 2034Z 214DEG 48KT 4125 9453 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...1.00 IN

$$

Curtis

1 follow-up statement

283 
WWUS53 KDMX 212056
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
356 PM CDT Tue May 21 2024

IAC001-049-077-121-212115-
/O.CON.KDMX.TO.W.0041.000000T0000Z-240521T2115Z/
Madison IA-Guthrie IA-Dallas IA-Adair IA-
356 PM CDT Tue May 21 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
NORTHWESTERN MADISON...SOUTHEASTERN GUTHRIE...SOUTHWESTERN DALLAS AND
NORTHEASTERN ADAIR COUNTIES...

At 356 PM CDT, a confirmed tornado was located 5 miles southeast of
Stuart, or 12 miles northeast of Greenfield, moving northeast at 30
mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Stuart and Dexter around 400 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Redfield, Dexter, Diamondhead Lake, and Linden.

This includes Interstate 80 between mile markers 89 and 102.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4135 9434 4144 9443 4166 9432 4158 9407
TIME...MOT...LOC 2056Z 227DEG 28KT 4143 9428 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Donavon

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at May 21, 1:42 PM CDT, 1 hour 53 minutes earlier. Its key messages:

Take action for ALL weather warnings this afternoon with tornadoes, damaging wind gusts, and large hail all possible
Renewed or prolonged flooding possible with rain that falls this afternoon with rivers rising

Area forecast discussion, May 21, 1:42 PM CDT, 1 hour 53 minutes before

Area Forecast Discussion
National Weather Service Des Moines IA
142 PM CDT Tue May 21 2024

.KEY MESSAGES...
- Take action for ALL weather warnings this afternoon with
  tornadoes, damaging wind gusts, and large hail all possible
- Renewed or prolonged flooding possible with rain that falls
  this afternoon with rivers rising

&&

.DISCUSSION...
Issued at 142 PM CDT Tue May 21 2024

Already one round of heavy rainfall moved through the state last
night with 3 to 5 inches of rainfall in some areas with isolated
higher amounts that led to flash flooding. Severe storms also moved
over southern and parts of central Iowa in the morning hours. As a
shortwave trough lifts northeastward and negatively tilts this
afternoon, latest Warn on Forecast System (WoFS) is showing
good airmass recovery with dewpoints rising 5 or so degrees
ahead of a surface triple point. Low level kinematics are
already strong and mid-levels are increasing as well. As the
airmass recovers, WoFS shows strong instability with MLCAPE
growing above 1500 J/kg and very favorable 0-500m and 0-1km SRH
ahead of it as well. Hodographs show a bit more linear
depiction, but initially they may be able to remain curved in
the low levels. Therefore, concern and confidence remain high of
rotating storms capable of tornadoes, including a few strong
given the Particularly Dangerous Situation Tornado Watch issued
earlier, damaging wind gusts including the potential of a few
intense wind gusts (greater than 75 mph), and large hail larger
than golf ball size. The hail size can be greater with rotating
storms as hailstones recycle in the updraft. Rainfall with
these storms of 1 to 2 inches will be possible and could cause
new flash flooding or prolong or renew flooding with rivers
rising as well from the recent and future rainfall. Storms will
move quickly through our area this afternoon and be largely east
of a Waterloo to Ottumwa line by around 7pm

As we move into this evening, we will enter a several day period of
drier conditions, which will be welcome for saturated soils and
swollen streams. While river flooding will be peaking mid to
late this week, no substantial rainfall is forecast until
Thursday night into Friday. This is when the next shortwave
trough will approach and pass north of the region and bring
thunderstorms through the state. The timing may mitigate a wider
severe risk, but instability and shear may be sufficient for a
few strong to severe storms.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1235 PM CDT Tue May 21 2024

Main concern is severe thunderstorms that may have large hail
and damaging wind gusts this afternoon. TEMPO lines are for best
timing of storms with impacts that may need more limited as the
storms move through than currently shown. Winds are gusty from
the southeast early this afternoon, but will stay gusty as they
become from the northwest behind the storms. A return to VFR
conditions is forecast into tonight.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 7 PM CDT this evening for IAZ004>007-015>017-
023>028-033>039-044>050-057>062-070>075-081>083-092.

&&

DISCUSSION...Ansorge
AVIATION...Ansorge

Hazardous weather outlook, May 21, 2:15 PM CDT, 1 hour 20 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
215 PM CDT Tue May 21 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-221915-
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-
215 PM CDT Tue May 21 2024

This Hazardous Weather Outlook is for portions of central Iowa,
north central Iowa, northeast Iowa, northwest Iowa, south central
Iowa, southeast Iowa, southwest Iowa, and west central Iowa.

.DAY ONE...This Afternoon and Tonight

A cold front that will be moving eastward across the state of Iowa
to generate a line of strong-severe storms during the afternoon
and evening hours with tornadoes, damaging winds, flash flooding,
and large hail all possible with the strongest storms. The worst
of the storms will be primarily during the 3 pm to 9 pm timeframe.
Winds could gust over 40 mph at times this evening as the storms
move off to the east.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional thunderstorm chances return at times Friday and
through the weekend. The severe weather potential for these days
will be better determined in the coming days.

.SPOTTER INFORMATION STATEMENT...

In the hours before

Local storm report, May 21, 3:21 PM CDT, 14 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
321 PM CDT Tue May 21 2024

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

0315 PM     Tstm Wnd Dmg     1 S Carroll             42.06N 94.87W
05/21/2024                   Carroll            IA   Law Enforcement

            Dispatch relayed wind and hail in Carroll
            with trees and powerlines down.

&&

Local storm report, May 21, 3:22 PM CDT, 13 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
322 PM CDT Tue May 21 2024

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

0317 PM     Tornado          2 WNW Corning           41.01N 94.78W
05/21/2024                   Adams              IA   Storm Chaser

            Confirmed tornado on ground by storm chaser.

&&

MP

Local storm report, May 21, 3:23 PM CDT, 12 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
323 PM CDT Tue May 21 2024

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

0315 PM     Tstm Wnd Gst     3 WSW Glidden           42.05N 94.79W
05/21/2024  M77 MPH          Carroll            IA   AWOS

&&

Local storm report, May 21, 3:25 PM CDT, 10 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
325 PM CDT Tue May 21 2024

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

0325 PM     Tornado          1 NW Prescott           41.03N 94.63W
05/21/2024                   Adams              IA   Storm Chaser

&&

JC/CH

Local storm report, May 21, 3:33 PM CDT, 2 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
333 PM CDT Tue May 21 2024

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

0317 PM     Tornado          3 ESE Corning           40.97N 94.69W
05/21/2024                   Adams              IA   Storm Chaser

            Confirmed tornado on the ground by storm
            chaser (former media).

&&

MP

Local storm report, May 21, 3:35 PM CDT, 0 minutes before

Preliminary Local Storm Report
National Weather Service Des Moines IA
335 PM CDT Tue May 21 2024

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

0313 PM     Tornado          2 NNE Corning           41.01N 94.72W
05/21/2024                   Adams              IA   Broadcast Media

            Reports of structure damage near Corning.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 8:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Palo Alto, Pocahontas	50 min
May 20, 8:48 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago	42 min
May 20, 9:12 PM CDT	River Flood Watch	DMX	Black Hawk	24 hr
May 20, 9:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	37 min
May 20, 9:30 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Winnebago, Worth	22 min
May 20, 10:20 PM CDT	Special Weather Statement	DMX	Hancock	25 min
May 20, 10:35 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	25 min
May 20, 10:40 PM CDT	Special Weather Statement	DMX	Palo Alto, Pocahontas	35 min
May 20, 11:02 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto, Pocahontas	28 min
May 20, 11:16 PM CDT	Flash Flood Warning	DMX	Hancock, Kossuth, Winnebago	6 hr
May 20, 11:30 PM CDT	Special Weather Statement	DMX	Carroll	30 min
May 20, 11:34 PM CDT	Special Weather Statement	DMX	Guthrie	26 min
May 20, 11:58 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Calhoun, Carroll, Dallas, Greene, Guthrie and 2 more	36 min
May 21, 12:06 AM CDT	Special Weather Statement	DMX	Pocahontas	24 min
May 21, 12:10 AM CDT	Special Weather Statement	DMX	Hancock	35 min
May 21, 1:09 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	66 min
May 21, 1:20 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	40 min
May 21, 2:15 AM CDT	Special Weather Statement	DMX	Audubon, Guthrie	60 min
May 21, 2:32 AM CDT	Special Weather Statement	DMX	Black Hawk, Tama	28 min
May 21, 2:38 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Butler, Grundy, Hardin	37 min
May 21, 2:56 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler	49 min
May 21, 3:09 AM CDT	Flash Flood Warning	DMX	Butler, Franklin, Grundy, Hardin, Wright	8 hr
May 21, 3:22 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	38 min
May 21, 3:26 AM CDT	Flash Flood Warning	DMX	Adair, Audubon, Cass, Guthrie	8 hr
May 21, 4:12 AM CDT	Special Weather Statement	DMX	Polk	33 min
May 21, 4:22 AM CDT	Flash Flood Warning	DMX	Boone, Dallas, Greene, Guthrie, Jasper, Marshall and 2 more	7 hr
May 21, 5:09 AM CDT	Areal Flood Warning	DMX	Hancock, Kossuth, Winnebago	14 hr
May 21, 5:25 AM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	50 min
May 21, 5:51 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Poweshiek, Tama	39 min
May 21, 6:18 AM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	42 min
May 21, 6:26 AM CDT	Flash Flood Warning	DMX	Jasper, Marshall, Poweshiek, Tama	5 hr
May 21, 6:28 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Carroll, Crawford, Sac	47 min
May 21, 6:51 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Cass, Crawford, Guthrie	54 min
May 21, 7:07 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Cass	23 min
May 21, 7:24 AM CDT	Tornado Warning	DMX	Adair, Cass	36 min
May 21, 7:29 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Adair, Audubon, Cass, Guthrie	46 min
May 21, 7:35 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Taylor	40 min
May 21, 8:05 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	55 min
May 21, 8:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Dallas, Madison, Polk, Warren	64 min
May 21, 8:57 AM CDT	Flash Flood Warning	DMX	Black Hawk, Bremer, Grundy, Hardin, Marshall, Tama	2 hr
May 21, 9:26 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Marshall, Polk, Poweshiek and 2 more	64 min
May 21, 10:09 AM CDT	River Flood Warning	DMX	Cass	15 hr
May 21, 11:14 AM CDT	River Flood Watch	DMX	Polk	4 days
May 21, 11:14 AM CDT	River Flood Watch	DMX	Webster	9 hr
May 21, 11:14 AM CDT	River Flood Watch	DMX	Polk	5 days
May 21, 11:14 AM CDT	River Flood Watch	DMX	Dallas, Greene	4 days
May 21, 11:14 AM CDT	River Flood Watch	DMX	Boone, Hamilton, Webster	47 hr
May 21, 11:14 AM CDT	River Flood Warning	DMX	Tama	8 days
May 21, 11:14 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	46 min
May 21, 11:16 AM CDT	Areal Flood Warning	DMX	Black Hawk, Bremer, Butler, Franklin, Grundy, Hardin and 6 more	24 hr
May 21, 11:54 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Poweshiek	21 min
May 21, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	52 min
May 21, 2:18 PM CDT	Severe Thunderstorm Warning	DMX	Sac	29 min
May 21, 2:28 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Audubon, Cass	62 min
May 21, 2:30 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Calhoun, Carroll, Crawford, Sac	45 min
May 21, 2:52 PM CDT	Tornado Warning	DMX	Adams, Cass	18 min
May 21, 2:55 PM CDT	Tornado Warning	DMX	Adair, Adams, Cass, Union	50 min
May 21, 2:57 PM CDT	Flash Flood Warning	DMX	Adair, Audubon, Carroll, Cass, Crawford, Greene and 1 more	6 hr
May 21, 3:07 PM CDT	Tornado Warning	DMX	Adair, Adams, Madison, Taylor, Union	53 min
May 21, 3:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Audubon, Boone, Calhoun, Carroll, Greene, Guthrie and 1 more	49 min
May 21, 3:13 PM CDT	Tornado Warning	DMX	Audubon, Cass, Greene, Guthrie	22 min
May 21, 3:20 PM CDT	River Flood Warning	DMX	Polk	7 hr
May 21, 3:26 PM CDT	River Flood Warning	DMX	Polk	4 days
May 21, 3:26 PM CDT	River Flood Warning	DMX	Polk	4 days
May 21, 3:26 PM CDT	Tornado Warning Tornado observed	DMX	Adair, Adams, Madison, Union	49 min
May 21, 3:31 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DMX	Boone, Greene, Hamilton, Webster, Wright	44 min
May 21, 3:33 PM CDT	Tornado Warning	DMX	Ringgold, Taylor, Union	42 min
May 21, 3:40 PM CDT	Tornado Warning Tornado observed	DMX	Adair, Adams, Dallas, Madison, Ringgold, Union	50 min
May 21, 3:55 PM CDT	Tornado Warning	DMX	Clarke, Madison, Ringgold, Union, Warren	50 min
May 21, 3:58 PM CDT	Tornado Warning	DMX	Clarke, Decatur, Lucas, Ringgold, Union, Warren	47 min
May 21, 4:01 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Guthrie, Hamilton, Webster	44 min
May 21, 4:03 PM CDT	Tornado Warning	DMX	Boone, Hamilton, Webster	42 min
May 21, 4:11 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Clarke, Dallas, Decatur, Lucas, Madison and 4 more	64 min
May 21, 4:11 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago, Worth	49 min
May 21, 4:15 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Worth, Wright	45 min
May 21, 4:19 PM CDT	Tornado Warning	DMX	Boone, Dallas, Polk, Story	41 min
May 21, 4:25 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Franklin, Grundy, Hamilton, Hardin, Marshall and 2 more	50 min
May 21, 4:30 PM CDT	Tornado Warning	DMX	Jasper, Madison, Polk, Warren	45 min
May 21, 4:43 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Jasper, Marion, Marshall, Polk and 2 more	47 min
May 21, 4:46 PM CDT	Tornado Warning	DMX	Franklin, Grundy, Hamilton, Hardin	17 min

Nearby

Tornado Warnings in Iowa, 2024 Every tornado warning in 2024 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.