Heavy Rain in Mineral County, Montana

Heavy Rain February 9, 2017 · Mineral County, Montana

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

What the National Weather Service wrote

Ponding water up to 3 feet deep near Saltese, MT on I-90 lead the Montana Dept. of Transportation to close the roadway for much of the day. Antecedent heavy low-elevation snow allowed for this event, as water was unable to drain off the sides of the road. After plows cut breaks in the snow berms, ponding decreased. Roads were reopened during the evening.

The wider storm

A warm and moist southwest flow pattern set up over the Northern Rockies during the second week of February. Significant rain and warming temperatures combined with the abundant low elevation snow to cause widespread ponding and flooding in fields and on roadways. The Bitterroot Valley near Corvallis, MT saw the most widespread areal flooding. Interstate 90 was also impacted for several hours as water ponded to a depth of 3 feet in a low spot on the roadway near Saltese, MT.

Began near St Regis (47.3000, -115.1000).

Source: NOAA Storm Events Database, event 682529. Narratives are written by the National Weather Service forecast office that issued the report.

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