Alert archive / Iowa / Flood Watches in 2025

Flood Watch 2, NWS Des Moines, IA

July 10, 202532 counties in Iowa

NWS Des Moines, IA issued this flood watch at Jul 10, 2025, 1:17 PM CDT for 32 counties in Iowa. It took effect at Jul 10, 2025, 7:00 PM CDT. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued
Jul 10, 2025, 1:17 PM CDT (18:17 UTC)
In effect from
Jul 10, 2025, 7:00 PM CDT
Expired
Jul 11, 2025, 7:35 PM CDT
In force
25 hr
Issued by
NWS Des Moines, IA
Flood severity
None
All 32 counties

Adair County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA

The radar

The Des Moines radar (KDMX), 8 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 260 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 2025-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 562 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 2025-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
562 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1007 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Jul 10, 12:46 PM CDT, 31 minutes earlier.

Area forecast discussion, Jul 10, 12:46 PM CDT, 31 minutes before
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Hazardous weather outlook, Jul 10, 6:44 AM CDT, 6 hours 33 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
644 AM CDT Thu Jul 10 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-111145-
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-
644 AM CDT Thu Jul 10 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

More thunderstorms develop this afternoon and evening, some of
which may be severe. Damaging winds are the main concern, although
hail and a tornado or two can't be ruled out.

Heavy rainfall is expected with storms today and tonight, which
could lead to ponding water and localized flash flooding,
especially in urban areas. Rises on area creeks and rivers are
also possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Periods of thunderstorms will impact the area through Friday
night. A few strong storms may occur with the primary threat being
damaging winds, although a tornado can't be ruled out on Friday.

In addition to severe storms, the potential for heavy to very
heavy rain to occur does exist and that could lead to flash
flooding through Friday night. Further, rises on area creeks and
rivers are possible late this week into this weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 3:40 AM CDTSevere Thunderstorm WarningDMXAdams, Taylor50 min
Jul 10, 4:27 AM CDTSevere Thunderstorm WarningDMXAdams, Ringgold, Taylor, Union33 min
Jul 10, 5:08 PM CDTTornado WarningDMXPoweshiek23 min
Jul 10, 5:55 PM CDTTornado WarningDMXCerro Gordo35 min

Nearby

Flood Watches in Iowa, 2025Every flood watch in 2025

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.