Low pressure along the west coast spread deeper moisture increasing the chances for showers and thunderstorms across the region through Independence Day. These storms brought strong, gusty winds, severe hail, moderate to heavy rainfall, and lightning, causing notable damage to property, specifically crops.

High Wind in GALLATIN, MONTANA
From 03-JUL-22 19:20:00 to 03-JUL-22 19:20:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 59 mph wind gust Sunday evening 1 mile WNW of Belgrade.

Hail in JEFFERSON, MONTANA
From 06-JUL-22 15:28:00 to 06-JUL-22 15:28:00 (MST-7)
Location: BASIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Via spotter report.

Heavy Rain in GLACIER, MONTANA
From 03-JUL-22 11:30:00 to 03-JUL-22 11:30:00 (MST-7)
Location: SUNDANCE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report of 1 inches of rain 11 miles west of Cut Bank.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 16:45:00 to 03-JUL-22 16:45:00 (MST-7)
Location: HELENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Rainfall of 1.11 INCHES recorded in 15 min per Ambient Weather station.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 16:45:00 to 03-JUL-22 16:45:00 (MST-7)
Location: (HLN)HELENA RGNL ARP
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Rainfall of 1.04 inches measured in 10 min per Ambient Weather station.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 16:45:00 to 03-JUL-22 16:45:00 (MST-7)
Location: HELENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Rainfall amount fell in 10 min per Ambient Weather station.

Heavy Rain in FERGUS, MONTANA
From 04-JUL-22 16:59:00 to 04-JUL-22 16:59:00 (MST-7)
Location: (LWT)LEWISTON MUNI A
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall 0.87 inches in 45 minutes.

Thunderstorm Wind in LEWIS AND CLARK, MONTANA
From 04-JUL-22 14:21:00 to 04-JUL-22 14:21:00 (MST-7)
Location: AUSTIN
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

DOT sensor on MacDonald Pass measured 64 mph wind gust. Reports heavy rain as well.

Thunderstorm Wind in LEWIS AND CLARK, MONTANA
From 03-JUL-22 17:40:00 to 03-JUL-22 17:40:00 (MST-7)
Location: (HLN)HELENA RGNL ARP
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS station KHLN (Helena Airport) measured 70 mph wind gust.

Hail in CHOUTEAU, MONTANA
From 06-JUL-22 14:04:00 to 06-JUL-22 14:04:00 (MST-7)
Location: VIRGELLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Video from Virgelle of hail ranging from half inch to nearly one inch in size.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 18:25:00 to 03-JUL-22 18:25:00 (MST-7)
Location: HELENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report via trained spotter.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 21:59:00 to 03-JUL-22 21:59:00 (MST-7)
Location: HELENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Event total of 2.1 inches.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 16:58:00 to 03-JUL-22 16:58:00 (MST-7)
Location: (HLN)HELENA RGNL ARP
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rainfall of 0.73 inches fell in 16 minutes.

Thunderstorm Wind in LEWIS AND CLARK, MONTANA
From 03-JUL-22 17:48:00 to 03-JUL-22 17:48:00 (MST-7)
Location: (HLN)HELENA RGNL ARP
Magnitude: 50.00 EG
Reported by: Public

Pictures from Elkview Rd of trailer roof destroyed and blown onto road. Estimated 50 knots. Damage cost unknown.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 17:00:00 to 03-JUL-22 17:00:00 (MST-7)
Location: BROADWATER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 1.09 inches of rainfall in the past 24 hours.

Heavy Rain in CASCADE, MONTANA
From 04-JUL-22 17:15:00 to 04-JUL-22 17:15:00 (MST-7)
Location: CASCADE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report estimated about 2.30 inches of rainfall.

Heavy Rain in TETON, MONTANA
From 04-JUL-22 18:00:00 to 04-JUL-22 18:00:00 (MST-7)
Location: CHOTEAU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 1.01 inches of total rainfall today, with 0.74 inches falling in 1 hour.

Heavy Rain in FERGUS, MONTANA
From 04-JUL-22 22:59:00 to 04-JUL-22 22:59:00 (MST-7)
Location: (LWT)LEWISTON MUNI A
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 1.04 inches of rainfall on a calendar day from three combined periods of convective rain.

Flash Flood in LEWIS AND CLARK, MONTANA
From 03-JUL-22 19:10:00 to 03-JUL-22 20:10:00 (MST-7)
Location: HELENA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Pictures of water up to homes near winnie and sanders avenues. Significant flooding of  intersections with fast moving water.

Flash Flood in LEWIS AND CLARK, MONTANA
From 03-JUL-22 17:45:00 to 03-JUL-22 19:45:00 (MST-7)
Location: HELENA
Flood cause: Heavy Rain
Property damage: 700.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Significant flash flooding across downtown and Last Chance Gulch area. Severe businesses sustained damage, including Helena YWCA and the Lewis and Clark Library. 1 to 2 feet of water flowing up against business doors. Flood waters up to bumpers of vans. Moviegoers at the Helena Cinemark report the movie theater being evacuated, with water draining into the lobby area. Some vehicles were also initially stranded in the lower level of the Great Northern Parking Garage. Several streets in the Capitol area saw rapid flooding with a number of homeowners reporting basement flooding.

Thunderstorm Wind in GLACIER, MONTANA
From 02-JUL-22 19:26:00 to 02-JUL-22 19:32:00 (MST-7)
Location: CUTBANK
Magnitude: 50.00 EG
Property damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm winds allowed hail of sub severe diameter to break windows. Spotter reported dime sized hail.  Damage cost unknown.

Heavy Rain in LEWIS AND CLARK, MONTANA
From 03-JUL-22 16:53:00 to 03-JUL-22 16:53:00 (MST-7)
Location: FT HARRISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Observer recorded .54 inches of rain in 10 min. Rain total was 0.57 inches.

Flash Flood in LEWIS AND CLARK, MONTANA
From 03-JUL-22 18:36:00 to 03-JUL-22 19:30:00 (MST-7)
Location: HELENA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement closed portions of neill and fuller avenues due to flooding. Water flooded down Last Chance Gulch and impacted numerous businesses.