First published 9/19/2026, 4:16:15 AM · Last updated 9/19/2026, 4:16:15 AM

Flash Flood Warning issued September 18 at 10:59PM CDT until September 19 at 1:00AM CDT by NWS Twin Cities/Chanhassen MN

The National Weather Service (Twin Cities/Chanhassen, MN) issued a Flash Flood Warning for the Chanhassen area starting at 10:59 PM CDT on September 18 (2026-09-19T03:59:00Z) and continuing until 1:00 AM CDT on September 19. The warning indicates imminent or ongoing flash flooding risk during that interval.

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: 2/10How 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: 5/10The 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: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Flash floods are rapidly developing hazards that can cause dangerous, life‑threatening conditions, local road closures, and property damage. People in the affected area—including drivers and other travelers—need to be aware and avoid flooded roads and low-lying areas until the threat passes.

Location

Sources

Flash Flood Warning issued September 18 at 10:59PM CDT until September 19 at 1:00AM CDT by NWS Twin Cities/Chanhassen MN

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