A long-lived supercell thunderstorm moved across portions of the western and northern counties in the Billings Forecast Area. This thunderstorm produced strong winds and large damaging hail. Some locations experienced hail the size of baseballs.

Hail in GOLDEN VALLEY, MONTANA
From 01-JUL-10 16:22:00 to 01-JUL-10 16:22:00 (MST-7)
Location: RYEGATE ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOLDEN VALLEY, MONTANA
From 01-JUL-10 16:26:00 to 01-JUL-10 16:26:00 (MST-7)
Location: RYEGATE ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOLDEN VALLEY, MONTANA
From 01-JUL-10 16:48:00 to 01-JUL-10 16:48:00 (MST-7)
Location: BELMONT
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in MUSSELSHELL, MONTANA
From 01-JUL-10 17:10:00 to 01-JUL-10 17:10:00 (MST-7)
Location: ELSO
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in MUSSELSHELL, MONTANA
From 01-JUL-10 17:10:00 to 01-JUL-10 17:10:00 (MST-7)
Location: KLEIN
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MUSSELSHELL, MONTANA
From 01-JUL-10 17:10:00 to 01-JUL-10 17:10:00 (MST-7)
Location: ELSO
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MUSSELSHELL, MONTANA
From 01-JUL-10 17:28:00 to 01-JUL-10 17:28:00 (MST-7)
Location: ELSO
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MUSSELSHELL, MONTANA
From 01-JUL-10 17:55:00 to 01-JUL-10 17:55:00 (MST-7)
Location: DELPHIA
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in YELLOWSTONE, MONTANA
From 01-JUL-10 18:11:00 to 01-JUL-10 18:11:00 (MST-7)
Location: NEWTON GROVE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in PARK, MONTANA
From 01-JUL-10 13:20:00 to 01-JUL-10 13:20:00 (MST-7)
Location: CLYDE PARK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 14:20:00 to 01-JUL-10 14:20:00 (MST-7)
Location: MELVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Funnel Cloud in PARK, MONTANA
From 01-JUL-10 14:22:00 to 01-JUL-10 14:22:00 (MST-7)
Location: HUNTERS HOT SPGS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Funnel was small and short-lived.

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 14:55:00 to 01-JUL-10 14:55:00 (MST-7)
Location: MELVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 15:05:00 to 01-JUL-10 15:05:00 (MST-7)
Location: MELVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail size ranged from peas to nickels to quarters.

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 15:06:00 to 01-JUL-10 15:06:00 (MST-7)
Location: BIG TIMBER
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 15:10:00 to 01-JUL-10 15:10:00 (MST-7)
Location: BIG TIMBER
Magnitude: 2.00 
Reported by: Trained Spotter

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 15:50:00 to 01-JUL-10 15:50:00 (MST-7)
Location: MELVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TREASURE, MONTANA
From 01-JUL-10 18:50:00 to 01-JUL-10 18:50:00 (MST-7)
Location: HYSHAM
Magnitude: 2.00 
Reported by: Trained Spotter

Broken windows and damaged siding was reported.

Hail in TREASURE, MONTANA
From 01-JUL-10 19:05:00 to 01-JUL-10 19:05:00 (MST-7)
Location: MYERS
Magnitude: 1.75 
Reported by: Trained Spotter

A nearby fire truck had all the windows and lights broken.

Hail in TREASURE, MONTANA
From 01-JUL-10 19:15:00 to 01-JUL-10 19:15:00 (MST-7)
Location: KUEHN
Magnitude: 2.75 
Reported by: Trained Spotter

The hail lasted twelve minutes and ranged from pea to baseball size which resulted in a lot of tree damage.

Thunderstorm Wind in TREASURE, MONTANA
From 01-JUL-10 19:15:00 to 01-JUL-10 19:15:00 (MST-7)
Location: HYSHAM
Magnitude: 52.00 EG
Reported by: Trained Spotter

An estimated wind gust of 60 mph was reported on the north side of Hysham.

Hail in TREASURE, MONTANA
From 01-JUL-10 19:20:00 to 01-JUL-10 19:20:00 (MST-7)
Location: HYSHAM
Magnitude: 1.75 
Reported by: Public

Hail in TREASURE, MONTANA
From 01-JUL-10 19:20:00 to 01-JUL-10 19:20:00 (MST-7)
Location: HYSHAM ARPT
Magnitude: 1.75 
Reported by: Trained Spotter

A broken window was reported.

Hail in ROSEBUD, MONTANA
From 01-JUL-10 19:30:00 to 01-JUL-10 19:30:00 (MST-7)
Location: VANANDA
Magnitude: 1.00 
Reported by: COOP Observer

The hail lasted 20 minutes.

Hail in ROSEBUD, MONTANA
From 01-JUL-10 19:36:00 to 01-JUL-10 19:36:00 (MST-7)
Location: VANANDA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ROSEBUD, MONTANA
From 01-JUL-10 19:45:00 to 01-JUL-10 19:45:00 (MST-7)
Location: ORINOCO
Magnitude: 52.00 EG
Reported by: Trained Spotter

An estimated wind gust of 60 mph was reported 20 miles northeast of Vananda.

Hail in ROSEBUD, MONTANA
From 01-JUL-10 19:48:00 to 01-JUL-10 19:48:00 (MST-7)
Location: VANANDA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in TREASURE, MONTANA
From 01-JUL-10 19:50:00 to 01-JUL-10 19:50:00 (MST-7)
Location: HYSHAM
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TREASURE, MONTANA
From 01-JUL-10 20:03:00 to 01-JUL-10 20:03:00 (MST-7)
Location: BIGHORN
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in GOLDEN VALLEY, MONTANA
From 01-JUL-10 16:28:00 to 01-JUL-10 16:28:00 (MST-7)
Location: RYEGATE ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ROSEBUD, MONTANA
From 01-JUL-10 19:45:00 to 01-JUL-10 19:45:00 (MST-7)
Location: ORINOCO
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in SWEET GRASS, MONTANA
From 01-JUL-10 15:55:00 to 01-JUL-10 15:55:00 (MST-7)
Location: MELVILLE
Magnitude: 1.75 
Reported by: COOP Observer