Hail in Lake County, Montana

Hail July 8, 2013 · Lake County, Montana

1 in

Hail diameter

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

What the National Weather Service wrote

A thunderstorm outflow boundary triggered another cell that grew in strength over higher terrain west of Moiese. This thunderstorm produced hail one inch in diameter, as reported by personnel at the National Bison Range.

The wider storm

An upper level trough tracked into northwest Montana by late afternoon on July 8th. The leading 50 knot mid-level southwest jet maximum moved towards the Bitterroot Valley by late morning helping to initiate a few hail producing supercell thunderstorms. A second round of thunderstorms developed by the afternoon across northwest Montana producing more hail.

Began near Moiese (47.3645, -114.2500).

Source: NOAA Storm Events Database, event 462086. Narratives are written by the National Weather Service forecast office that issued the report.

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