Montana, 2013

Hail in Montana, July 19, 2013

July 19, 2013 · NWS GGW · 2 events in 2 counties and zones

A strong low-level jet stream and a moderately unstable atmosphere combined to form a few marginally strong thunderstorms which moved over the far northeast corner of Montana.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GGW wrote it up.

A strong low-level jet stream and a moderately unstable atmosphere combined to form a few marginally strong thunderstorms which moved over the far northeast corner of Montana.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Glasgow, MT wrote its last area forecast discussion before the first event at Jul 19, 7:18 PM MST, 9 minutes earlier.

Area forecast discussion, Jul 19, 7:18 PM MST, 9 minutes before
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In the hours before

Special weather statement, Jul 19, 6:55 PM MST, 32 minutes before
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Special weather statement, Jul 19, 7:20 PM MST, 7 minutes before
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The radar

The Glasgow radar (KGGW), 203 km away, was scanning. The volume nearest the first event began at 02:29 UTC.

Open the radar archive at this moment

Event by event

2 hail. Local standard time, as filed.

Hail, Sheridan

When
July 19, 7:27 PM MST
Where
Sheridan County, 0.45 mi W of Westby
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
48.870, -104.060

Trained spotter reported hail up to the size of nickels.

Hail, Daniels

When
July 19, 7:49 PM MST
Where
Daniels County, Flaxville
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
48.800, -105.170

Trained spotter reported hail up to the size of nickels.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Montana in 2013Every state in 2013This day in weather historyWarnings in Montana, July 2013

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 470487, 470488.