Alert archive / Iowa / Flash Flood Warnings in 2026

Flash Flood Warning 3, NWS Des Moines, IA

June 5, 2026Marion County, Warren County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 5, 2026, 10:44 PM CDT for Marion County, Warren County, Iowa. It was in force for 4 hr. 1 report 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: Jun 5, 2026, 10:44 PM CDT (03:44 UTC)
Expired: Jun 6, 2026, 3:11 AM CDT
In force: 4 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

Counties Marion County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 45 km from the middle of the area, began a volume at 03:47 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
Jun 5, 11:00 PM CDT	FLASH FLOOD	Pleasantville, IA	Stranded vehicle with water over the hood and waist-deep water in Pleasantville.

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

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.7 hours before the alert went out and 236 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: 1742 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted.

472 
WGUS53 KDMX 060344
FFWDMX
IAC125-181-060945-
/O.NEW.KDMX.FF.W.0003.260606T0344Z-260606T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Des Moines IA
1044 PM CDT Fri Jun 5 2026

The National Weather Service in Des Moines has issued a

* Flash Flood Warning for...
  Northwestern Marion County in south central Iowa...
  Northeastern Warren County in south central Iowa...

* Until 445 AM CDT Saturday.

* At 1044 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Pleasantville, Lake Red Rock, Hartford, Swan and Sandyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

For the latest stream observations and forecasts refer to 
weather.gov/desmoines/water.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4148 9345 4148 9335 4148 9334 4149 9334
      4150 9315 4135 9311 4135 9343

FLASH FLOOD...RADAR INDICATED

$$

Dodson

3 follow-up statements

905 
WGUS73 KDMX 060403
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
1103 PM CDT Fri Jun 5 2026

IAC125-181-060945-
/O.CON.KDMX.FF.W.0003.000000T0000Z-260606T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IA-Warren IA-
1103 PM CDT Fri Jun 5 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT SATURDAY 
FOR NORTHWESTERN MARION AND NORTHEASTERN WARREN COUNTIES...

At 1103 PM CDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 4 inches 
of rain have fallen. Additional rainfall amounts of 1 to 2 inches 
are possible in the warned area. Flash flooding is ongoing or 
expected to begin shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Law enforcement reported stranded vehicle and waist deep
         water in Pleasantville.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Pleasantville, Lake Red Rock, Hartford, Swan and Sandyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

For the latest stream observations and forecasts refer to 
weather.gov/desmoines/water.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4148 9345 4148 9335 4148 9334 4149 9334
      4150 9315 4135 9311 4135 9343

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Dodson

674 
WGUS73 KDMX 060621 RRB
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
121 AM CDT Sat Jun 6 2026

IAC125-181-060945-
/O.CON.KDMX.FF.W.0003.000000T0000Z-260606T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IA-Warren IA-
121 AM CDT Sat Jun 6 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT EARLY THIS 
MORNING FOR NORTHWESTERN MARION AND NORTHEASTERN WARREN COUNTIES...

At 121 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 5 inches of rain have 
fallen. Additional rainfall amounts up to 0.5 inch are possible in 
the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Pleasantville, Lake Red Rock, Hartford, Swan and Sandyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

For the latest stream observations and forecasts refer to 
weather.gov/desmoines/water.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4148 9345 4148 9335 4148 9334 4149 9334
      4150 9315 4135 9311 4135 9343

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Dodson

273 
WGUS73 KDMX 060811 RRB
FFSDMX

Flash Flood Statement
National Weather Service Des Moines IA
311 AM CDT Sat Jun 6 2026

IAC125-181-060821-
/O.CAN.KDMX.FF.W.0003.000000T0000Z-260606T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IA-Warren IA-
311 AM CDT Sat Jun 6 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN MARION AND 
NORTHEASTERN WARREN COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 700 AM CDT for portions of 
south central, southeast, and southwest Iowa.

&&

LAT...LON 4148 9345 4148 9335 4148 9334 4149 9334
      4150 9315 4135 9311 4135 9343

$$

Dodson

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 9:15 PM CDT	Special Weather Statement	DMX	Marion	30 min
Jun 5, 9:27 PM CDT	Severe Thunderstorm Warning	DMX	Marion, Warren	48 min
Jun 5, 9:33 PM CDT	Tornado Warning	DMX	Marion, Warren	42 min
Jun 5, 9:41 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Madison, Union	64 min
Jun 5, 9:50 PM CDT	Tornado Warning	DMX	Clarke, Madison, Union	29 min
Jun 5, 9:59 PM CDT	Tornado Warning	DMX	Adair, Adams, Cass	46 min
Jun 5, 10:09 PM CDT	Tornado Warning	DMX	Marion, Warren	45 min
Jun 5, 10:18 PM CDT	Severe Thunderstorm Warning	DMX	Marion, Warren	57 min
Jun 5, 10:41 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	64 min
Jun 5, 10:53 PM CDT	Severe Thunderstorm Warning	DMX	Cass	67 min
Jun 5, 10:59 PM CDT	Severe Thunderstorm Warning	DMX	Marion	61 min
Jun 5, 11:02 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union	32 min
Jun 5, 11:11 PM CDT	Tornado Warning	DMX	Cass	20 min
Jun 5, 11:23 PM CDT	Flash Flood Warning	DMX	Adair, Adams, Cass, Clarke, Madison, Union	4 hr
Jun 5, 11:25 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Mahaska, Marion, Monroe	65 min
Jun 5, 11:28 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass	47 min
Jun 5, 11:38 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Union	67 min
Jun 5, 11:42 PM CDT	Flash Flood Warning Considerable damage threat	DMX	Marion	3 hr
Jun 5, 11:50 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Warren	55 min
Jun 6, 12:01 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Mahaska, Marion, Monroe, Wapello	59 min
Jun 6, 12:42 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Lucas, Monroe, Wayne	78 min
Jun 6, 1:33 AM CDT	Flash Flood Warning	DMX	Appanoose, Lucas, Marion, Monroe, Wayne	5 hr
Jun 6, 12:59 PM CDT	Areal Flood Warning	DMX	Marion	20 hr

Nearby

Flash Flood Warnings in Iowa, 2026 Every flash flood warning in 2026

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.