Severe thunderstorms produced large hail and strong straight-line winds across Boulder, Morgan, Washington and Phillips Counties.  Three weak tornadoes were also observed.  Hail, up to 2 inches in diameter was reported in Morgan County.  Straight-line winds toppled a grain bin in Washington County.

Hail in WASHINGTON, COLORADO
From 21-JUN-10 17:25:00 to 21-JUN-10 17:25:00 (MST-7)
Location: (AKO)AKRON WEATHER STATION
Magnitude: 2.00 
Reported by: Trained Spotter

Hail in WASHINGTON, COLORADO
From 21-JUN-10 17:09:00 to 21-JUN-10 17:09:00 (MST-7)
Location: AKRON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 16:33:00 to 21-JUN-10 16:33:00 (MST-7)
Location: SNYDER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In addition, a gust to 60 mph was reported.

Hail in JEFFERSON, COLORADO
From 21-JUN-10 16:16:00 to 21-JUN-10 16:16:00 (MST-7)
Location: MORRISON
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 17:12:00 to 21-JUN-10 17:12:00 (MST-7)
Location: FT MORGAN
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 16:27:00 to 21-JUN-10 16:27:00 (MST-7)
Location: HILLROSE
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 16:27:00 to 21-JUN-10 16:27:00 (MST-7)
Location: BRUSH MUNI ARPT
Magnitude: 1.50 
Reported by: Amateur Radio

Hail in MORGAN, COLORADO
From 21-JUN-10 16:25:00 to 21-JUN-10 16:25:00 (MST-7)
Location: FT MORGAN
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 16:16:00 to 21-JUN-10 16:16:00 (MST-7)
Location: BRUSH
Magnitude: 1.50 
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, COLORADO
From 21-JUN-10 17:45:00 to 21-JUN-10 17:45:00 (MST-7)
Location: COPE
Magnitude: 65.00 EG
Reported by: Trained Spotter

Intense thunderstorm winds blew a grain bin across County Roads AAA and 23.  In addition several power lines were knocked down.

Thunderstorm Wind in PHILLIPS, COLORADO
From 21-JUN-10 17:35:00 to 21-JUN-10 17:35:00 (MST-7)
Location: HOLYOKE
Magnitude: 63.00 MG
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 21-JUN-10 16:16:00 to 21-JUN-10 16:16:00 (MST-7)
Location: BRUSH
Magnitude: 1.50 
Reported by: Trained Spotter

Thunderstorm Wind in MORGAN, COLORADO
From 21-JUN-10 16:02:00 to 21-JUN-10 16:02:00 (MST-7)
Location: FT MORGAN ARPT
Magnitude: 54.00 MG
Reported by: Trained Spotter

Hail in ADAMS, COLORADO
From 21-JUN-10 15:43:00 to 21-JUN-10 15:43:00 (MST-7)
Location: MANILA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOULDER, COLORADO
From 21-JUN-10 14:06:00 to 21-JUN-10 14:06:00 (MST-7)
Location: LOUISVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in BOULDER, COLORADO
From 21-JUN-10 13:55:00 to 21-JUN-10 13:55:00 (MST-7)
Location: LAFAYETTE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in MORGAN, COLORADO
From 21-JUN-10 15:54:00 to 21-JUN-10 15:54:00 (MST-7)
Location: BIJOU
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tornado touched down briefly but did no damage.

Tornado in MORGAN, COLORADO
From 21-JUN-10 16:03:00 to 21-JUN-10 16:03:00 (MST-7)
Location: DODD
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A tornado touched down briefly but did no damage.

Tornado in WASHINGTON, COLORADO
From 21-JUN-10 16:56:00 to 21-JUN-10 16:56:00 (MST-7)
Location: PINNEO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A tornado touched down briefly but did no damage.

Hail in BOULDER, COLORADO
From 21-JUN-10 14:05:00 to 21-JUN-10 14:05:00 (MST-7)
Location: LOUISVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WASHINGTON, COLORADO
From 21-JUN-10 17:10:00 to 21-JUN-10 17:10:00 (MST-7)
Location: AKRON
Magnitude: 1.25 
Reported by: Trained Spotter