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Timeline: When will dangerous, tropically enhanced flooding reach the Southwest, Southern Plains and Midwest?

·Sep 30, 2026
Source: Fox Weather
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THE TAKEAWAYFlood Watches have been issued across nine states this week across the Four Corners, Southwest and Plains, as moisture from Hurricane Polo and Tropical Storm Rachel surge north. Many areas throughout the week could receive 6 to 8 inches of rain, or more.80 million people are in the path of Thursday's flood threat from Texas to the Upper Midwest. A dangerous multiday flood event is developing across the Four Corners, Southwest and Plains this week as tropical moisture from the remnants of Polo, which made landfall in Baja California late Monday, and Hurricane Rachel spread northward through the week. According to the FOX Forecast Center, up to 25 states could see impacts from this weather system this week. OVER 150M FACE DANGEROUS, WEEKLONG FLOOD THREAT ACROSS 30+ STATES FUELED BY POWERFUL PACIFIC TROPICAL SYSTEMS next

Monsoon thunderstorms trigger flash flooding washing out part of Highway 491 in Newcomb, New Mexico, on Sep. 16, 2026.

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