First published 9/19/2026, 2:58:15 AM · Last updated 9/19/2026, 2:58:15 AM

Flood Watch issued by NWS Chicago (Sep 18 21:49 CDT–Sep 19 13:00 CDT)

The National Weather Service Chicago issued a Flood Watch on Sep 18 at 9:49 PM CDT, valid through Sep 19 at 1:00 PM CDT, indicating conditions supportive of flooding in the Chicago, IL area.

Categories: severe-weather-and-natural-disasters

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 9/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 4/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 6/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

A Flood Watch signals increased risk of flooding that can affect travel, property, and local infrastructure. Residents and travelers in the Chicago area should monitor forecasts and be prepared for localized flooding and possible travel disruptions.

Location

Sources

Flood Watch issued September 18 at 9:49PM CDT until September 19 at 1:00PM CDT by NWS Chicago IL

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