Hail in Jefferson County, Montana
Hail July 16, 2019 · Jefferson County, Montana
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Trained spotter reports quarter sized hail falling and covering the ground near Cardwell.
The wider storm
A Pacific Trough approached from the west and supplied sufficient wind shear, lift, moisture, and instability for the development of strong to severe thunderstorms over southwest Montana. Effective shear values fell in the 30 to 40 knot range, while there was about .75 inches of precipitable water in the area. The first wave of storms developed by early afternoon and produced wind gusts up to 80 mph in Gallatin County. Thunderstorms continued to develop in the late afternoon and evening hours, which produced quarter sized hail in Jefferson and Beaverhead Counties.
Began near Cardwell (45.8500, -111.9916).
Source: NOAA Storm Events Database, event 841894. Narratives are written by the National Weather Service forecast office that issued the report.
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