Flash Flood in Sierra County, New Mexico

Flash Flood July 26, 2020 · Sierra County, New Mexico

$2.4M

Damage as recorded

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

What the National Weather Service wrote

There was extensive flash flooding of roads and buildings around Truth or Consequences and Williamsburg. Near-zero visibility was reported in the heavy rain along with pea sized hail. A trained spotter reported 4.10 inches of rain in about one hour. A car was washed off the road. Multiple homes were evacuated around the two towns. The Rio Grande was threatening to exit its banks, therefore causing Elephant Butte Dam having to be closed.

The wider storm

Modest low level moisture and good mid level moisture combined with an area of surface convergence to produce significant rainfall across central Sierra County. Weak upper level flow kept storm motion very slow which allowed for over 4 inches of rain to fall in an hour across Truth or Consequences and Williamsburg.

Began near Williamsburg (33.1451, -107.2798).

Source: NOAA Storm Events Database, event 913279. Narratives are written by the National Weather Service forecast office that issued the report.

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