First published 9/19/2026, 4:36:15 AM · Last updated 9/19/2026, 4:36:15 AM

Flash Flood Warning issued September 18 at 11:26PM 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/Twin Cities area beginning 11:26 PM CDT on Sep 18 and lasting until 1:00 AM CDT on Sep 19. The warning indicates imminent or ongoing flash flooding from heavy, short-duration rainfall in the affected 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: 7/10The 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: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Flash flooding can rapidly flood roadways, damage property, and threaten life. Local residents and travelers in the Chanhassen/Twin Cities area need to avoid flooded roads and follow safety guidance during the warning period.

Location

Sources

Flash Flood Warning issued September 18 at 11:26PM CDT until September 19 at 1:00AM CDT by NWS Twin Cities/Chanhassen MN

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