Skip to contentCALCHIS
≋floodactive

Flood Warning issued September 23 at 8:56PM CDT until September 30 at 6:36AM CDT by NWS Quad Cities IA IL

7.0
41.8371°N, 90.6986°W·US-IA
Started 4h ago
NWS flood alerts data as of
Event Details
Typeflood
Severity7.0
Statusactive
Location41.8371°N, 90.6986°W (IA)
Started2026-09-24T01:56:00+00:00
Last Updated2026-09-24T05:50:53.035+00:00
Sourcenoaa_ahps
Source URLapi.weather.gov
Confidence1.00
Impact Zones
Modeled Inundation
Where the National Water Model's latest analysis puts water inside the warning area. Experimental; the warning polygon is the official boundary.
NWS polygon
Severe Impact Zone
Active flood warning area. Significant property damage possible.
NWS polygon

Zone estimates are based on scientific models and may differ from actual local conditions.

Impact Analysis

This event's zone is the NWS warning polygon. Population and structure estimates are not computed inside NWS polygons yet, so none are shown.

Historical Comparison
2009 CLINTON County, IOWA Flash Flood72% match

Flash Flood in IOWA, 11km from current event, $500K in recorded damage

CLINTON County, IOWADamage: $500K
2008 CLINTON County, IOWA Flood70% match

Flood in IOWA, 17km from current event, $646K in recorded damage

CLINTON County, IOWADamage: $646K
2010 SCOTT County, IOWA Flood69% match

Flood in IOWA, 21km from current event, $500K in recorded damage

SCOTT County, IOWADamage: $500K

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

View on Live Map
Related
US-IA flood hazard profileAll US hazard profilesScoring methodology

Is this event approaching a location you care about?

Calchis tracks live federal event feeds against your own saved addresses and portfolios, and alerts you when a consequence zone reaches one.

Get Started FreeCompare plans

Free includes Live map + 3 triggers + 10 bond positions. Analyst is $149/mo for 1,000-location portfolios, ep curves, predictions, parametric triggers.

Zone estimates are based on scientific models and may differ from actual local conditions.