Severe thunderstorm brought large hail and damaging winds to the Northeast Plains of Colorado.  Large hail up to one inch in diameter was observed in Washington County.  Strong thunderstorm winds to around 75 mph also caused damage.  In Logan County, trees and power lines were downed.  In Morgan County, one person was injured when a carport collapsed.  In Phillips County, an irrigation sprinkler was overturned, and a 3-ton grain feeder was moved from the pasture to a nearby barn.

Hail in WASHINGTON, COLORADO
From 21-MAY-08 16:16:00 to 21-MAY-08 16:16:00 (MST-7)
Location: OTIS STANSFIELD ARPT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WASHINGTON, COLORADO
From 21-MAY-08 16:00:00 to 21-MAY-08 16:00:00 (MST-7)
Location: OTIS STANSFIELD ARPT
Magnitude: 0.75 
Reported by: Public

Hail in WASHINGTON, COLORADO
From 21-MAY-08 16:30:00 to 21-MAY-08 16:30:00 (MST-7)
Location: OTIS STANSFIELD ARPT
Magnitude: 0.88 
Reported by: Public

Hail in LOGAN, COLORADO
From 21-MAY-08 17:22:00 to 21-MAY-08 17:22:00 (MST-7)
Location: DAILEY
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 17:00:00 to 21-MAY-08 17:00:00 (MST-7)
Location: STERLING
Magnitude: 65.00 EG
Reported by: County Official

Outflow winds from a severe thunderstorm knocked downed a tree and downed power lines.

Thunderstorm Wind in MORGAN, COLORADO
From 21-MAY-08 17:30:00 to 21-MAY-08 17:30:00 (MST-7)
Location: LODI
Magnitude: 60.00 EG
Reported by: Trained Spotter

Thunderstorm winds knocked down a carport and injured one person.

Thunderstorm Wind in PHILLIPS, COLORADO
From 21-MAY-08 17:30:00 to 21-MAY-08 17:30:00 (MST-7)
Location: AMHERST
Magnitude: 56.00 EG
Reported by: Trained Spotter

A severe thunderstorm overturned an irrigation sprinkler.  In addition, a 3-ton grain feeder was moved from the pasture to a barn.

Thunderstorm Wind in WASHINGTON, COLORADO
From 21-MAY-08 15:45:00 to 21-MAY-08 15:45:00 (MST-7)
Location: AKRON
Magnitude: 57.00 EG
Reported by: Trained Spotter

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 15:47:00 to 21-MAY-08 15:47:00 (MST-7)
Location: FLEMING
Magnitude: 57.00 EG
Reported by: Amateur Radio

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 19:55:00 to 21-MAY-08 19:55:00 (MST-7)
Location: STERLING
Magnitude: 55.00 EG
Reported by: Trained Spotter

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 16:40:00 to 21-MAY-08 16:40:00 (MST-7)
Location: FLEMING
Magnitude: 53.00 EG
Reported by: Trained Spotter

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 17:30:00 to 21-MAY-08 17:30:00 (MST-7)
Location: CROOK
Magnitude: 52.00 EG
Reported by: Amateur Radio

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 18:00:00 to 21-MAY-08 18:00:00 (MST-7)
Location: CROOK
Magnitude: 52.00 EG
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, COLORADO
From 21-MAY-08 18:35:00 to 21-MAY-08 18:35:00 (MST-7)
Location: AKRON
Magnitude: 56.00 EG
Reported by: ASOS

Thunderstorm Wind in LOGAN, COLORADO
From 21-MAY-08 19:16:00 to 21-MAY-08 19:16:00 (MST-7)
Location: STERLING
Magnitude: 57.00 EG
Reported by: Trained Spotter

Thunderstorm Wind in MORGAN, COLORADO
From 21-MAY-08 16:30:00 to 21-MAY-08 16:30:00 (MST-7)
Location: BALZAC
Magnitude: 56.00 EG
Reported by: Trained Spotter