Severe thunderstorms produced intense straight-line winds in Granby, causing extensive  damage.  Town officials in Granby estimated at least 30 trees were knocked down from the storm, just within the city limits.  At least two roofs were separated from the buildings themselves. The damage to the high school alone was estimated to be at least $200,000.  Debris from the wind blew out vehicle windows. Power was knocked out temporarily in several areas throughout Grand County.  A hiker near Grand Lake was injured when a falling tree hit struck her and injured her ankle.  Very strong thunderstorm winds were also observed across portions of the Urban Corridor and Northeast Plains of Colorado.  An intense microburst wind destroyed a ferris wheel in Merino and caused one minor injury.  A lightning strike destroyed a home in north Denver.

Hail in SEDGWICK, COLORADO
From 30-JUN-11 16:58:00 to 30-JUN-11 16:58:00 (MST-7)
Location: JULESBURG
Magnitude: 1.25 
Reported by: Trained Spotter

Thunderstorm Wind in LOGAN, COLORADO
From 30-JUN-11 14:55:00 to 30-JUN-11 14:55:00 (MST-7)
Location: WILLARD
Magnitude: 54.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in MORGAN, COLORADO
From 30-JUN-11 14:43:00 to 30-JUN-11 14:43:00 (MST-7)
Location: BALZAC
Magnitude: 61.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, COLORADO
From 30-JUN-11 11:17:00 to 30-JUN-11 11:17:00 (MST-7)
Location: DENVER FRONT RANGE A
Magnitude: 55.00 MG
Reported by: AWOS

Hail in SEDGWICK, COLORADO
From 30-JUN-11 17:02:00 to 30-JUN-11 17:02:00 (MST-7)
Location: JULESBURG
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 30-JUN-11 16:42:00 to 30-JUN-11 16:42:00 (MST-7)
Location: OVID
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 30-JUN-11 16:18:00 to 30-JUN-11 16:18:00 (MST-7)
Location: SEDGWICK
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LOGAN, COLORADO
From 30-JUN-11 15:07:00 to 30-JUN-11 15:07:00 (MST-7)
Location: STERLING
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DOUGLAS, COLORADO
From 30-JUN-11 20:50:00 to 30-JUN-11 20:50:00 (MST-7)
Location: PARKER
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in GRAND, COLORADO
From 30-JUN-11 15:35:00 to 30-JUN-11 15:35:00 (MST-7)
Location: GRANBY
Magnitude: 72.00 EG
Property damage: 200.00K
Reported by: Trained Spotter

Intense straightline winds from a severe thunderstorm knocked a 50-foot tree on to a roof.  Fences were also toppled and shingles removed.  Several loose objects were lifted and tossed.

Thunderstorm Wind in DENVER, COLORADO
From 30-JUN-11 11:14:00 to 30-JUN-11 11:14:00 (MST-7)
Location: LOWRY AFB
Magnitude: 55.00 MG
Reported by: Mesonet

Thunderstorm Wind in LOGAN, COLORADO
From 30-JUN-11 15:02:00 to 30-JUN-11 15:02:00 (MST-7)
Location: STERLING
Magnitude: 50.00 MG
Reported by: Department of Highways

Thunderstorm Wind in SEDGWICK, COLORADO
From 30-JUN-11 16:25:00 to 30-JUN-11 16:25:00 (MST-7)
Location: JULESBURG
Magnitude: 52.00 EG
Reported by: Trained Spotter

Intense straightline winds knocked down a 50-foot tree.

Thunderstorm Wind in BOULDER, COLORADO
From 30-JUN-11 18:16:00 to 30-JUN-11 18:16:00 (MST-7)
Location: BOULDER ARPT
Magnitude: 56.00 MG
Reported by: ASOS

Thunderstorm Wind in WELD, COLORADO
From 30-JUN-11 18:10:00 to 30-JUN-11 18:10:00 (MST-7)
Location: ROGGEN
Magnitude: 54.00 MG
Reported by: State Official

Thunderstorm Wind in LOGAN, COLORADO
From 30-JUN-11 15:30:00 to 30-JUN-11 15:30:00 (MST-7)
Location: MERINO
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds toppled and destroyed a ferris wheel at a carnival ride manufacture facility.  In addition, one person received minor injuries when downed electrical lines fell across the vehicle he was sitting in and shocked him.

Thunderstorm Wind in GRAND, COLORADO
From 30-JUN-11 13:30:00 to 30-JUN-11 13:30:00 (MST-7)
Location: GRANBY ARPT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A 64-yr old hiker was injured when a falling tree struck her during a severe thunderstorm.

Lightning in DENVER, COLORADO
From 30-JUN-11 22:30:00 to 30-JUN-11 22:30:00 (MST-7)
Location: DENVER
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck the garage of a home in north Denver.  The blast ignited several propane tanks that were stored in the garage.  The ensuing fire destroyed the garage and a car inside. The home was considered a complete loss.