NEW MEXICO — A DAM OVERTOPPED ON THE RIO GRANDE, EVACUATIONS ORDERED

Floodwater has poured over the McLeod Dam near Garfield, and Rincon, Salem, Garfield, Hatch and Placitas are under evacuation orders along the Rio Grande. A moderate flood risk covers south-eastern Arizona, much of New Mexico and west Texas today, moves into Oklahoma, Texas and Colorado on Thursday and reaches Dallas-Fort Worth on Friday.

43 turning points on record since Jul 18 — the 8 most recent shown.

The storm's water outlives its wind — Polo's remnants fade over Mexico while its moisture overtops a dam on the Rio Grande.

Hurricane remnants have triggered catastrophic flash flooding across the Southwest and central High Plains, leading directly to a dam overtopping on the Rio Grande in New Mexico and the evacuations that followed. An explainer identified these remnants as the main driver of the extreme rainfall and runoff. The observations underscore how the moisture from the remnants produced flooding severe enough to overwhelm local infrastructure.

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