A shortwave and upper level jet energy moved over Montana through the period as a weak NW-SE frontal boundary remained stalled across the forecast area. Scattered to numerous showers and thunderstorms, some severe, developed late afternoon and evening over North-Central Montana, with activity diminishing during the overnight hours.

Hail in HILL, MONTANA
From 28-MAY-14 18:13:00 to 28-MAY-14 18:13:00 (MST-7)
Location: ROCKY BOY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 2.00 inches (hen egg sized) reported in Rocky Boy, MT.

Hail in BLAINE, MONTANA
From 28-MAY-14 18:46:00 to 28-MAY-14 18:46:00 (MST-7)
Location: CHINOOK HEBBELMAN AR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported about 10 mi S of Chinook, MT. Hail stones measured 2 hours after event. Trees stripped of leaves.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:45:00 to 28-MAY-14 17:45:00 (MST-7)
Location: VIRGELLE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 2.00 inches (hen egg sized) reported.

Thunderstorm Wind in BLAINE, MONTANA
From 28-MAY-14 19:14:00 to 28-MAY-14 19:14:00 (MST-7)
Location: HARLEM
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

High wind gusts, estimated at 52KT (60MPH), were reported in Harlem, MT. A power line was blown down, starting a small fire.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 18:00:00 to 28-MAY-14 18:00:00 (MST-7)
Location: ILIAD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 0.88 inches (nickel sized) reported with little to no wind.

Hail in CASCADE, MONTANA
From 28-MAY-14 16:18:00 to 28-MAY-14 16:18:00 (MST-7)
Location: GREAT FALLS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail 0.88 inches (nickel sized) reported about 2 mi N of Great Falls, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 16:58:00 to 28-MAY-14 16:58:00 (MST-7)
Location: FT BENTON ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 1.00 inches (quarter sized) reported in Fort Benton, MT.

Hail in CASCADE, MONTANA
From 28-MAY-14 16:10:00 to 28-MAY-14 16:10:00 (MST-7)
Location: GREAT FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 1.00 inches (quarter sized) reported in Great Falls, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:00:00 to 28-MAY-14 17:00:00 (MST-7)
Location: SHONKIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported about 7 mi NE of Highwood, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 16:55:00 to 28-MAY-14 16:55:00 (MST-7)
Location: HIGHWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported in Highwood, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:35:00 to 28-MAY-14 17:35:00 (MST-7)
Location: SQUARE BUTTE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 1.00 inches (quarter sized) reported about 2 mi N of Square Butte, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:13:00 to 28-MAY-14 17:13:00 (MST-7)
Location: MONTAGUE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.75 inches (golf ball sized) reported.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:47:00 to 28-MAY-14 17:47:00 (MST-7)
Location: BIG SANDY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 0.75 inches (penny sized) reported in Big Sandy, MT.

Hail in CHOUTEAU, MONTANA
From 28-MAY-14 17:16:00 to 28-MAY-14 17:16:00 (MST-7)
Location: MONTAGUE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.75 inches (golf ball sized) reported about 10 mi NW of Geraldine, MT. Spotter returned home 45 minutes after event. Original hailstone could have exceeded 2.00 inches.

Hail in CASCADE, MONTANA
From 28-MAY-14 15:37:00 to 28-MAY-14 15:37:00 (MST-7)
Location: CASCADE BARRETT ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 1.50 inches (ping pong ball sized) reported about 2 mi S of Cascade, MT.

Hail in FERGUS, MONTANA
From 28-MAY-14 18:08:00 to 28-MAY-14 18:08:00 (MST-7)
Location: POWNAL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported about 6 mi N of Coffee Creek, MT.

Hail in CASCADE, MONTANA
From 28-MAY-14 16:12:00 to 28-MAY-14 16:12:00 (MST-7)
Location: ULM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail 0.75 inches (penny sized) reported about 3 mi SSW of Ulm, MT.

Hail in CASCADE, MONTANA
From 28-MAY-14 16:08:00 to 28-MAY-14 16:08:00 (MST-7)
Location: (GTF)GREAT FALLS ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail 0.88 inches (nickel sized) reported about 2 mi N of Great Falls, MT.

Hail in CASCADE, MONTANA
From 28-MAY-14 15:45:00 to 28-MAY-14 15:45:00 (MST-7)
Location: CASCADE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 0.88 inches (nickel sized) reported about in Cascade, MT.

Hail in HILL, MONTANA
From 28-MAY-14 18:20:00 to 28-MAY-14 18:20:00 (MST-7)
Location: ROCKY BOY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported about 7 mi SE of Rocky Boy, MT.

Hail in BLAINE, MONTANA
From 28-MAY-14 18:51:00 to 28-MAY-14 18:51:00 (MST-7)
Location: CLEVELAND
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.50 inches (ping pong ball sized) reported about 15 mi ESE of Lloyd, MT.

Thunderstorm Wind in CHOUTEAU, MONTANA
From 28-MAY-14 17:21:00 to 28-MAY-14 17:21:00 (MST-7)
Location: LOMA
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High wind gusts, measured at 52KT (60MPH), were reported at the Loma DOT sensor, 1 mi N of Loma, MT. An airplane hangar in Big Sandy was destroyed.

Hail in BLAINE, MONTANA
From 28-MAY-14 19:26:00 to 28-MAY-14 19:26:00 (MST-7)
Location: HOGELAND ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 0.75 inches (penny sized) reported about 6 mi WSW of Hogeland, MT.

Hail in BLAINE, MONTANA
From 28-MAY-14 19:28:00 to 28-MAY-14 19:28:00 (MST-7)
Location: HOGELAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail 1.00 inches (quarter sized) reported about 4 mi SSE of Hogeland, MT.

Thunderstorm Wind in BLAINE, MONTANA
From 28-MAY-14 19:28:00 to 28-MAY-14 19:28:00 (MST-7)
Location: HOGELAND
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High wind gusts, measuring 52KT (60MPH), were reported about 4 mi SSE of Hogeland, MT.

Thunderstorm Wind in BLAINE, MONTANA
From 28-MAY-14 18:46:00 to 28-MAY-14 18:46:00 (MST-7)
Location: CHINOOK HEBBELMAN AR
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High wind gusts, measuring 66KT (76MPH), were reported about 10 mi S of Chinook, MT. Trees stripped of leaves.

Thunderstorm Wind in BLAINE, MONTANA
From 28-MAY-14 19:20:00 to 28-MAY-14 19:20:00 (MST-7)
Location: FT BELKNAP AGENCY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

High wind gusts, measuring 52KT (60MPH), were reported about 13 mi S of Fort Belknap, MT.

Hail in CASCADE, MONTANA
From 31-MAY-14 06:25:00 to 31-MAY-14 06:25:00 (MST-7)
Location: EDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail 1.00 inches (quarter sized) reported.

Heavy Rain in GLACIER, MONTANA
From 31-MAY-14 18:20:00 to 31-MAY-14 19:20:00 (MST-7)
Location: CUTBANK ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain of 1.00 inches reported at the Cut Bank Airport ASOS.

High Wind in EASTERN GLACIER, MONTANA
From 29-MAY-14 08:03:00 to 29-MAY-14 08:03:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High wind gusts, measuring 50KT (58MPH), were reported about 3 mi SSW of Cut Bank, MT at the Cut Bank Airport ASOS.