Alert archive / Iowa / Flood Watches in 2026
Flood Watch 13, NWS Des Moines, IA
NWS Des Moines, IA issued this flood watch at Sep 13, 2026, 8:19 PM CDT for 40 counties in Iowa. It took effect at Sep 14, 2026, 7:00 AM CDT. It was in force for 71 hr.
The area
The counties it named.
The facts
- Issued
- Sep 13, 2026, 8:19 PM CDT (01:19 UTC)
- In effect from
- Sep 14, 2026, 7:00 AM CDT
- Expired
- Sep 17, 2026, 6:24 AM CDT
- In force
- 71 hr
- Issued by
- NWS Des Moines, IA
- Flood severity
- None
All 40 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Franklin 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, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 14 km from the middle of the area, began a volume at 01:21 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
Topeka, KS (KTOP), launched 00:00Z, 1.3 hours before the alert went out and 344 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.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -416 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 319 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 10:33 AM CDT | Special Weather Statement | DMX | Cass | 42 min |
| Sep 14, 12:06 PM CDT | Special Weather Statement | DMX | Boone | 24 min |
| Sep 14, 3:32 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 28 min |
Nearby
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.