Severe thunderstorms producing large hail and severe wind gusts moved across Southeast Montana during the afternoon and early evening hours of the 18th.

Hail in CARTER, MONTANA
From 18-JUL-08 15:26:00 to 18-JUL-08 15:26:00 (MST-7)
Location: MILL IRON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POWDER RIVER, MONTANA
From 18-JUL-08 17:15:00 to 18-JUL-08 17:15:00 (MST-7)
Location: SAYLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Estimated wind gusts of 60 to 70 mph were also reported.

Hail in CUSTER, MONTANA
From 18-JUL-08 14:15:00 to 18-JUL-08 14:15:00 (MST-7)
Location: KNOWLTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FALLON, MONTANA
From 18-JUL-08 14:33:00 to 18-JUL-08 14:33:00 (MST-7)
Location: WESTMORE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BIG HORN, MONTANA
From 18-JUL-08 15:05:00 to 18-JUL-08 15:05:00 (MST-7)
Location: KUEHN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CARTER, MONTANA
From 18-JUL-08 15:15:00 to 18-JUL-08 15:15:00 (MST-7)
Location: EKALAKA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CARTER, MONTANA
From 18-JUL-08 15:43:00 to 18-JUL-08 15:43:00 (MST-7)
Location: MILL IRON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in POWDER RIVER, MONTANA
From 18-JUL-08 16:50:00 to 18-JUL-08 16:50:00 (MST-7)
Location: BAY HOPE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated wind gust of 60 mph was reported 15 miles west of Biddle.

Hail in POWDER RIVER, MONTANA
From 18-JUL-08 17:00:00 to 18-JUL-08 17:00:00 (MST-7)
Location: SAYLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winds were estimated at 60 to 70 mph.

Thunderstorm Wind in POWDER RIVER, MONTANA
From 18-JUL-08 16:25:00 to 18-JUL-08 16:25:00 (MST-7)
Location: OTTER
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 74 mph was recorded 7 miles north/northeast of Otter.

Thunderstorm Wind in ROSEBUD, MONTANA
From 18-JUL-08 15:20:00 to 18-JUL-08 15:20:00 (MST-7)
Location: LAME DEER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph in Lame Deer.

Thunderstorm Wind in POWDER RIVER, MONTANA
From 18-JUL-08 17:10:00 to 18-JUL-08 17:10:00 (MST-7)
Location: BOWERS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four to five inch diameter tree branches were reported broken as a result of a 60 mph estimated wind gust six miles south of Biddle.

Hail in POWDER RIVER, MONTANA
From 18-JUL-08 16:05:00 to 18-JUL-08 16:05:00 (MST-7)
Location: OTTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain occurred with 1.4 inches in forty minutes resulting in localized flooding. A telephone pole was blown down.

Hail in CARTER, MONTANA
From 18-JUL-08 15:14:00 to 18-JUL-08 15:14:00 (MST-7)
Location: EKALAKA ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated wind gusts of 60 mph were reported.