A strong cold front crossed eastern Montana during the evening hours of the 11th, and produced widespread severe weather across all 12 counties in northeast Montana.  There were numerous reports of wind gusts of 60 to 85 mph and hail in excess of 2 inches in diameter. The most significant hail reports were as high as 4.25 inches in diameter in the Frenchman Valley area, and the wind gusts measured as high as 85 mph south of the town of Wibaux. There was roof damage to a large agronomy building in Savage, and there was significant straight line wind damage to structures from Savage in southern Richland County southward to St. Phillips in Wibaux County.

Thunderstorm Wind in RICHLAND, MONTANA
From 11-JUL-04 20:30:00 to 11-JUL-04 20:30:00 (MST)
Location: SIOUX PASS
Magnitude: 61 EG
Reported by: GENERAL PUBLIC

Flash Flood in ROOSEVELT, MONTANA
From 11-JUL-04 21:00:00 to 11-JUL-04 22:00:00 (MST)
Location: FT KIPP
Reported by: LAW ENFORCEMENT

Flooding reported along old US 2.

Thunderstorm Wind in RICHLAND, MONTANA
From 11-JUL-04 19:15:00 to 11-JUL-04 19:15:00 (MST)
Location: SAVAGE
Magnitude: 60 EG
Property damage: 50K
Reported by: GENERAL PUBLIC

Two buildings were damaged in Savage.  A portion of a roof was blown off of one building and the entrance door to a second building was damaged.

Thunderstorm Wind in PHILLIPS, MONTANA
From 11-JUL-04 17:30:00 to 11-JUL-04 17:30:00 (MST)
Location: SACO
Magnitude: 52 EG
Reported by: GENERAL PUBLIC

Hail in DANIELS, MONTANA
From 11-JUL-04 19:15:00 to 11-JUL-04 19:15:00 (MST)
Location: SCOBEY
Magnitude: 2.75 
Reported by: GENERAL PUBLIC

Hail in VALLEY, MONTANA
From 11-JUL-04 17:30:00 to 11-JUL-04 17:30:00 (MST)
Location: HINSDALE
Magnitude: 4.25 
Reported by: GENERAL PUBLIC

Hail in DAWSON, MONTANA
From 11-JUL-04 18:45:00 to 11-JUL-04 18:45:00 (MST)
Location: GLENDIVE
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Flash Flood in SHERIDAN, MONTANA
From 11-JUL-04 19:57:00 to 11-JUL-04 20:57:00 (MST)
Location: HOMESTEAD
Reported by: TRAINED SPOTTER

2 to 3 inches of water over the road.

Hail in PHILLIPS, MONTANA
From 11-JUL-04 17:20:00 to 11-JUL-04 17:20:00 (MST)
Location: SACO
Magnitude: 2.00 
Reported by: GENERAL PUBLIC

Hail in PETROLEUM, MONTANA
From 11-JUL-04 18:20:00 to 11-JUL-04 18:20:00 (MST)
Location: TEIGEN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in VALLEY, MONTANA
From 11-JUL-04 18:45:00 to 11-JUL-04 18:45:00 (MST)
Location: OPHEIM
Magnitude: 2.00 
Reported by: TRAINED SPOTTER

Hail in DANIELS, MONTANA
From 11-JUL-04 19:35:00 to 11-JUL-04 19:35:00 (MST)
Location: SCOBEY
Magnitude: 3.00 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in WIBAUX, MONTANA
From 11-JUL-04 19:40:00 to 11-JUL-04 19:40:00 (MST)
Location: WIBAUX
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in DAWSON, MONTANA
From 11-JUL-04 18:55:00 to 11-JUL-04 18:55:00 (MST)
Location: LINDSAY
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in WIBAUX, MONTANA
From 11-JUL-04 19:05:00 to 11-JUL-04 19:13:00 (MST)
Location: WIBAUX
Magnitude: 74 MG
Property damage: 100K
Crop damage: 300K
Reported by: TRAINED SPOTTER

A complete barn roof was blown off and a large evergreen tree was uprooted. There was crop and property damage between Red Top East Road and Edge Hill East Road.

Hail in DANIELS, MONTANA
From 11-JUL-04 19:15:00 to 11-JUL-04 19:15:00 (MST)
Location: SCOBEY
Magnitude: 3.00 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in ROOSEVELT, MONTANA
From 11-JUL-04 20:10:00 to 11-JUL-04 20:10:00 (MST)
Location: FROID
Magnitude: 64 EG
Reported by: GENERAL PUBLIC

Hail in MCCONE, MONTANA
From 11-JUL-04 19:44:00 to 11-JUL-04 19:44:00 (MST)
Location: WELDON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in GARFIELD, MONTANA
From 11-JUL-04 19:45:00 to 11-JUL-04 19:45:00 (MST)
Location: JORDAN
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in SHERIDAN, MONTANA
From 11-JUL-04 19:55:00 to 11-JUL-04 19:55:00 (MST)
Location: HOMESTEAD
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in RICHLAND, MONTANA
From 11-JUL-04 20:53:00 to 11-JUL-04 20:53:00 (MST)
Location: LAMBERT
Magnitude: 65 EG
Reported by: TRAINED SPOTTER

The wind was accompanied by pea sized hail.

Hail in VALLEY, MONTANA
From 11-JUL-04 18:00:00 to 11-JUL-04 18:00:00 (MST)
Location: OPHEIM
Magnitude: 1.75 
Reported by: GENERAL PUBLIC

Hail in PHILLIPS, MONTANA
From 11-JUL-04 17:30:00 to 11-JUL-04 17:30:00 (MST)
Location: SACO
Magnitude: 2.75 
Property damage: 75K
Crop damage: 100K
Reported by: GENERAL PUBLIC

The hail broke vehicle windows and caused damage to several roofs. Crop damage was also reported.

Hail in VALLEY, MONTANA
From 11-JUL-04 18:10:00 to 11-JUL-04 18:10:00 (MST)
Location: HINSDALE
Magnitude: 2.00 
Crop damage: 50K
Reported by: GENERAL PUBLIC

The hail caused crop damage and was accompanied by 50 mph winds.

Hail in VALLEY, MONTANA
From 11-JUL-04 18:10:00 to 11-JUL-04 18:10:00 (MST)
Location: OPHEIM
Magnitude: 3.00 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in ROOSEVELT, MONTANA
From 11-JUL-04 20:20:00 to 11-JUL-04 20:20:00 (MST)
Location: FROID
Magnitude: 52 EG
Reported by: GENERAL PUBLIC

Thunderstorm Wind in RICHLAND, MONTANA
From 11-JUL-04 20:30:00 to 11-JUL-04 20:30:00 (MST)
Location: LAMBERT
Magnitude: 61 EG
Reported by: GENERAL PUBLIC

The wind was accompanied by pea sized hail.

Hail in VALLEY, MONTANA
From 11-JUL-04 17:44:00 to 11-JUL-04 17:44:00 (MST)
Location: HINSDALE
Magnitude: 1.75 
Reported by: GENERAL PUBLIC

Hail in MCCONE, MONTANA
From 11-JUL-04 20:00:00 to 11-JUL-04 20:00:00 (MST)
Location: VIDA
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Flash Flood in RICHLAND, MONTANA
From 11-JUL-04 20:00:00 to 11-JUL-04 21:00:00 (MST)
Location: SAVAGE
Reported by: LAW ENFORCEMENT

Water reported over highway 16.

Hail in PHILLIPS, MONTANA
From 11-JUL-04 17:32:00 to 11-JUL-04 17:32:00 (MST)
Location: SUN PRAIRIE
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail in PHILLIPS, MONTANA
From 11-JUL-04 17:18:00 to 11-JUL-04 17:18:00 (MST)
Location: SACO
Magnitude: 2.75 
Reported by: GENERAL PUBLIC

Hail in MCCONE, MONTANA
From 11-JUL-04 20:00:00 to 11-JUL-04 20:00:00 (MST)
Location: VIDA
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in WIBAUX, MONTANA
From 11-JUL-04 20:13:00 to 11-JUL-04 20:13:00 (MST)
Location: WIBAUX
Magnitude: 70 EG
Reported by: GENERAL PUBLIC

Windows were blown out of a house.

Hail in GARFIELD, MONTANA
From 11-JUL-04 19:10:00 to 11-JUL-04 19:18:00 (MST)
Location: JORDAN
Magnitude: 1.00 
Reported by: GENERAL PUBLIC