Severe thunderstorms produced large hail and damaging winds across Adams, Arapahoe, Douglas, Lincoln and Washington Counties.  Large hail up to ping pong size was observed.  In addition, thunderstorm winds to 77 mph blew two semi-trailers on their sides near Limon.  Moderate to severe damage to a couple of barns in Arapahoe and Washington Counties was reported along with some tree damage.  In Lakewood,  a tree blew down and landed on at least 5 cars.  At Centenniel Airport, a section of a roof on a hangar was ripped off the strong winds.  In Rocky Mountain National Park, a man was seriously injured when he was blown off his bicycle by high winds along Trail Ridge Road.  Lightning damaged a home near Fort Collins.

Thunderstorm Wind in DOUGLAS, COLORADO
From 16-JUN-11 15:04:00 to 16-JUN-11 15:04:00 (MST-7)
Location: PARKER
Magnitude: 55.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, COLORADO
From 16-JUN-11 15:32:00 to 16-JUN-11 15:32:00 (MST-7)
Location: WOODROW
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, COLORADO
From 16-JUN-11 14:33:00 to 16-JUN-11 14:33:00 (MST-7)
Location: STRASBURG
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, COLORADO
From 16-JUN-11 16:00:00 to 16-JUN-11 16:00:00 (MST-7)
Location: LIMON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, COLORADO
From 16-JUN-11 15:53:00 to 16-JUN-11 15:53:00 (MST-7)
Location: LIMON
Magnitude: 67.00 MG
Reported by: ASOS

Thunderstorm Wind in DOUGLAS, COLORADO
From 16-JUN-11 17:58:00 to 16-JUN-11 17:58:00 (MST-7)
Location: FRANKTOWN
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong Wind in S & E JACKSON / LARIMER / N & NE GRAND / NW BOULDER COUNTIES ABOVE 9000 FEET, COLORADO
From 16-JUN-11 11:00:00 to 16-JUN-11 13:00:00 (MST-7)
Magnitude: 43.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A man was seriously injured when he was knocked off his bicycle by a strong wind gust.  The accident occurred east of Lava Cliffs on Trail Ridge Road.  The man had injuries to his head and pelvis, and suffered from hypothermia as well.

Thunderstorm Wind in JEFFERSON, COLORADO
From 16-JUN-11 20:30:00 to 16-JUN-11 20:30:00 (MST-7)
Location: LAKEWOOD
Magnitude: 50.00 EG
Reported by: Broadcast Media

Strong thunderstorm winds blew a tree down near 6th Ave. and Sheridan Blvd.  At least five cars were damaged.

Thunderstorm Wind in ARAPAHOE, COLORADO
From 16-JUN-11 16:00:00 to 16-JUN-11 16:00:00 (MST-7)
Location: (APA)ENGLWOOD ARAPAH
Magnitude: 52.00 EG
Reported by: Broadcast Media

Thunderstorm winds ripped off a section of roof from a hangar at Centenniel Airport.

Lightning in LARIMER, COLORADO
From 16-JUN-11 13:30:00 to 16-JUN-11 13:30:00 (MST-7)
Location: FT COLLINS
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning damaged the roof of a home.

Hail in LINCOLN, COLORADO
From 16-JUN-11 16:46:00 to 16-JUN-11 16:46:00 (MST-7)
Location: SHAW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 16-JUN-11 17:51:00 to 16-JUN-11 17:51:00 (MST-7)
Location: LOVELAND
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, COLORADO
From 16-JUN-11 15:37:00 to 16-JUN-11 15:37:00 (MST-7)
Location: STRASBURG
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ARAPAHOE, COLORADO
From 16-JUN-11 15:18:00 to 16-JUN-11 15:18:00 (MST-7)
Location: BYERS
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINCOLN, COLORADO
From 16-JUN-11 17:12:00 to 16-JUN-11 17:12:00 (MST-7)
Location: LIMON
Magnitude: 60.00 EG
Reported by: Public

Two 18-wheelers were blown on their sides along Interstate 70 near Limon.

Thunderstorm Wind in ARAPAHOE, COLORADO
From 16-JUN-11 15:40:00 to 16-JUN-11 15:40:00 (MST-7)
Location: BYERS
Magnitude: 60.00 EG
Reported by: Trained Spotter

Damaging thunderstorm winds knocked over a 20 to 40-ft section of a barn and uprooted several trees.

Hail in LARIMER, COLORADO
From 16-JUN-11 18:40:00 to 16-JUN-11 18:40:00 (MST-7)
Location: MASONVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 16-JUN-11 19:00:00 to 16-JUN-11 19:00:00 (MST-7)
Location: DRAKES
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 16-JUN-11 18:56:00 to 16-JUN-11 18:56:00 (MST-7)
Location: WELLINGTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in LARIMER, COLORADO
From 16-JUN-11 18:53:00 to 16-JUN-11 18:53:00 (MST-7)
Location: DRAKES
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 16-JUN-11 19:10:00 to 16-JUN-11 19:10:00 (MST-7)
Location: DRAKES
Magnitude: 1.00 
Reported by: Public

Hail in LARIMER, COLORADO
From 16-JUN-11 18:51:00 to 16-JUN-11 18:51:00 (MST-7)
Location: DRAKES
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Thunderstorm Wind in WASHINGTON, COLORADO
From 16-JUN-11 17:14:00 to 16-JUN-11 17:14:00 (MST-7)
Location: AKRON GEBAUER ARPT
Magnitude: 59.00 MG
Reported by: Trained Spotter

Damaging thunderstorm winds destroyed a cattle barn and snapped several tree tops.