Skip to contentCALCHIS
≋floodactive

Flood Warning issued October 2 at 11:34AM CDT until October 8 at 1:00PM CDT by NWS St Louis MO

7.0
39.4429°N, 91.0100°W·US-IL
Started just now
NWS flood alerts data as of
Event Details
Typeflood
Severity7.0
Statusactive
Location39.4429°N, 91.0100°W (IL)
Started2026-10-04T06:00:00+00:00
Last Updated2026-10-02T20:01:02.274+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
2025 LINCOLN County, MISSOURI Flash Flood71% match

Flash Flood in MISSOURI, 39km from current event, $5M in recorded damage

LINCOLN County, MISSOURIDamage: $5.0M
2008 LINCOLN County, MISSOURI Flood68% match

Flood in MISSOURI, 25km from current event, $2M in recorded damage

LINCOLN County, MISSOURIDamage: $1.6M
2011 MORGAN County, ILLINOIS Flash Flood66% match

Flash Flood in ILLINOIS, 64km from current event, $150M in recorded damage

MORGAN County, ILLINOISDamage: $150.0M

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

View on Live Map
Related

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.

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.