Severe thunderstorms developed over parts of Adams, Denver and Elbert Counties.  Two tornadoes touched down briefly in Elbert County.  In addition, the storms produced hail from quarter to golfball size, and wind gusts to near 70 mph.  The wind downed a tree in Adams County.  In Weld County, heavy rain and flash flooding caused widespread field flooding.  Several county roads were washed out near Pawnee National Grassland.  Another flash flood occurred in Elbert County, between Kiowa, Elizabeth and Agate.

Hail in ELBERT, COLORADO
From 12-JUL-11 15:32:00 to 12-JUL-11 15:32:00 (MST-7)
Location: KIOWA
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in ELBERT, COLORADO
From 12-JUL-11 17:52:00 to 12-JUL-11 17:52:00 (MST-7)
Location: LOWLAND
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in ELBERT, COLORADO
From 12-JUL-11 15:23:00 to 12-JUL-11 15:23:00 (MST-7)
Location: KIOWA
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in ELBERT, COLORADO
From 12-JUL-11 19:42:00 to 12-JUL-11 19:42:00 (MST-7)
Location: ELBERT
Magnitude: 1.75 
Reported by: Trained Spotter

Tornado in ELBERT, COLORADO
From 12-JUL-11 19:11:00 to 12-JUL-11 19:11:00 (MST-7)
Location: FONDIS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tornado touched down briefly but did no damage.

Hail in ELBERT, COLORADO
From 12-JUL-11 20:05:00 to 12-JUL-11 20:05:00 (MST-7)
Location: FONDIS
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, COLORADO
From 12-JUL-11 20:54:00 to 12-JUL-11 20:54:00 (MST-7)
Location: COMMERCE CITY
Magnitude: 50.00 EG
Reported by: Public

Intense thunderstorm winds toppled a large tree.

Thunderstorm Wind in DENVER, COLORADO
From 12-JUL-11 20:54:00 to 12-JUL-11 20:54:00 (MST-7)
Location: DENVER
Magnitude: 51.00 MG
Reported by: ASOS

Thunderstorm Wind in DENVER, COLORADO
From 12-JUL-11 20:55:00 to 12-JUL-11 20:55:00 (MST-7)
Location: DENVER
Magnitude: 57.00 MG
Reported by: ASOS

Flash Flood in WELD, COLORADO
From 12-JUL-11 22:00:00 to 13-JUL-11 01:00:00 (MST-7)
Location: SEVERANCE
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 100.00K
Reported by: Trained Spotter

Thunderstorms produced very heavy rainfall, from 3.5 to 6 inches, and caused widespread field flooding and washed out several roads.

Flash Flood in ELBERT, COLORADO
From 12-JUL-11 19:00:00 to 12-JUL-11 22:15:00 (MST-7)
Location: LOWLAND
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 10.00K
Reported by: CoCoRaHS

A thunderstorm produced very heavy rain, 5 inches in less than 3 hours.  Flash flooding made unpaved roads impassable as a fast moving current, about 6 inches deep and a city block wide, inundated County Road 166, west of Ridge Road.  In the Chaparrel Subdivision, southwest of Agate, Flooding was also reported along Emerald Trail, Topaz and Amethyst Drives, making those roadways impassable as well.  Extensive field flooding was also reported.

Tornado in ELBERT, COLORADO
From 12-JUL-11 18:24:00 to 12-JUL-11 18:24:00 (MST-7)
Location: CEDAR PT
Tornado F-scale: EF0
Property damage: 0.00K
Reported by: Trained Spotter

A tornado touched down briefly and knocked down approximately 20 large ponderosa pines.

Hail in ELBERT, COLORADO
From 12-JUL-11 15:41:00 to 12-JUL-11 15:41:00 (MST-7)
Location: KIOWA
Magnitude: 1.00 
Reported by: Trained Spotter