An upper level short wave trough advecting east across the Montana Rockies, combined with moderate wind shear, multiple weak low level boundaries, and a very unstable airmass, resulted in the issuance of Severe Thunderstorm Watch number 411 for south central North Dakota during the late afternoon and evening hours of Friday, June 25th.
Multiple thunderstorm warnings were issued during this event. Numerous reports of large hail, several reports of severe thunderstorm winds, and two funnel cloud reports were received.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 16:00:00 to 25-JUN-10 16:20:00 (CST-6)
Location: MANDAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 16:38:00 to 25-JUN-10 16:48:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 65.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: SHAVE Project

The strong thunderstorm winds snapped a six inch in diameter tree.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 16:37:00 to 25-JUN-10 16:45:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:10:00 to 25-JUN-10 15:25:00 (CST-6)
Location: JUDSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:15:00 to 25-JUN-10 15:25:00 (CST-6)
Location: JUDSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 15:50:00 to 25-JUN-10 16:01:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 65.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Strong thunderstorm winds uprooted fence posts.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:51:00 to 25-JUN-10 15:57:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:45:00 to 25-JUN-10 15:57:00 (CST-6)
Location: MANDAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:45:00 to 25-JUN-10 16:11:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Tornado in MORTON, NORTH DAKOTA
From 25-JUN-10 15:55:00 to 25-JUN-10 16:05:00 (CST-6)
Location: MANDAN MUNI ARPT
Tornado F-scale: EF1
Property damage: 200.00K
Crop damage: 50.00K
Reported by: Public

Grain bins were destroyed by this tornado and there was some crop damage.  Based on information received from the property owner about the damage, it was determined that this tornado was a middle  EF1 on the Enhanced Fujita Scale. From that it was determined that wind speeds were around 95 mph.

Tornado in EMMONS, NORTH DAKOTA
From 25-JUN-10 16:35:00 to 25-JUN-10 16:37:00 (CST-6)
Location: LINTON MUNI ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A broadcast meteorologist reported this weak tornado. It impacted no structures and so did no damage.

Funnel Cloud in MORTON, NORTH DAKOTA
From 25-JUN-10 15:13:00 to 25-JUN-10 15:18:00 (CST-6)
Location: ST ANTHONY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The funnel cloud appeared briefly then disappeared.

Funnel Cloud in WARD, NORTH DAKOTA
From 25-JUN-10 19:57:00 to 25-JUN-10 20:00:00 (CST-6)
Location: KENMARE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A brief funnel cloud formed, but never reached the ground.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:30:00 to 25-JUN-10 15:40:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:15:00 to 25-JUN-10 15:25:00 (CST-6)
Location: JUDSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:45:00 to 25-JUN-10 15:55:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:46:00 to 25-JUN-10 15:56:00 (CST-6)
Location: MANDAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:48:00 to 25-JUN-10 15:58:00 (CST-6)
Location: MANDAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:50:00 to 25-JUN-10 16:00:00 (CST-6)
Location: MANDAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain accompanied the large hail.

Hail in EMMONS, NORTH DAKOTA
From 25-JUN-10 16:17:00 to 25-JUN-10 16:30:00 (CST-6)
Location: HAZELTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in EMMONS, NORTH DAKOTA
From 25-JUN-10 16:30:00 to 25-JUN-10 16:40:00 (CST-6)
Location: HAZELTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:40:00 to 25-JUN-10 15:50:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in EMMONS, NORTH DAKOTA
From 25-JUN-10 16:50:00 to 25-JUN-10 17:00:00 (CST-6)
Location: HAZELTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 17:15:00 to 25-JUN-10 17:25:00 (CST-6)
Location: GLEN ULLIN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 17:30:00 to 25-JUN-10 17:45:00 (CST-6)
Location: ALMONT
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No reports of damage accompanied the very large hail.

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-10 17:46:00 to 25-JUN-10 17:55:00 (CST-6)
Location: NEW TOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 15:50:00 to 25-JUN-10 16:00:00 (CST-6)
Location: ST ANTHONY
Magnitude: 65.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Time of event is based on radar imagery. The strong thunderstorm winds resulted in several mature trees snapped or uprooted.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 15:50:00 to 25-JUN-10 16:00:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 65.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Time of event is based on radar. The strong thunderstorm winds resulted in a six inch in diameter cottonwood tree snapped in half.

Hail in BURLEIGH, NORTH DAKOTA
From 25-JUN-10 16:49:00 to 25-JUN-10 16:54:00 (CST-6)
Location: (BIS)BISMARCK MUNI A
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 18:05:00 to 25-JUN-10 18:20:00 (CST-6)
Location: ST ANTHONY
Magnitude: 2.75 
Property damage: 50.00K
Crop damage: 100.00K
Reported by: Trained Spotter

The very large hail resulted in significant damage to crops and vehicles.

Hail in MCINTOSH, NORTH DAKOTA
From 25-JUN-10 20:38:00 to 25-JUN-10 20:48:00 (CST-6)
Location: ZEELAND
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 15:40:00 to 25-JUN-10 15:50:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail accompanied the strong thunderstorm winds.

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 16:15:00 to 25-JUN-10 16:30:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The strong thunderstorm winds blew down two large metal bins.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:45:00 to 25-JUN-10 16:05:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:30:00 to 25-JUN-10 15:50:00 (CST-6)
Location: SWEET BRIAR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Hail in MORTON, NORTH DAKOTA
From 25-JUN-10 15:10:00 to 25-JUN-10 15:30:00 (CST-6)
Location: NEW SALEM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Thunderstorm Wind in MORTON, NORTH DAKOTA
From 25-JUN-10 16:00:00 to 25-JUN-10 16:20:00 (CST-6)
Location: MANDAN MUNI ARPT
Magnitude: 65.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Public

The strong thunderstorm winds blew down four inch in diameter tree limbs.