Flash Flood in Sierra County, New Mexico

Flash Flood September 27, 2025 · Sierra County, New Mexico

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Social media video showed evidence of mud flows and damage from flash flooding near the town of Monticello.

The wider storm

A negatively tilted trough was moving through southern California and northern Baja which tapped plenty of subtropical moisture. Locally heavy rain developed along the east slopes of the Blacks Range and brought flash flooding and wind damage to the Monticello area.

Began near Monticello (33.4057, -107.4693).

Source: NOAA Storm Events Database, event 1295087. Narratives are written by the National Weather Service forecast office that issued the report.

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