A strong, slow-moving upper low pressure area moved across eastern Colorado and western Kansas during the afternoon and early evening hours.  A round of severe weather occurred with thunderstorms initially producing large, damaging hail.  By late afternoon, a NE-SW line of supercells developed and moved northeast across Cheyenne and Kit Carson counties, producing numerous tornadoes near the town of Kit Carson in Cheyenne county. Later in the evening, storms produced flash flooding over portions of western Kansas.

Tornado in CHEYENNE, COLORADO
From 22-APR-10 15:40:00 to 22-APR-10 15:44:00 (MST-7)
Location: KIT CARSON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

This tornado developed southwest of Kit Carson and dissipated just west of town.  No known damage.

Tornado in CHEYENNE, COLORADO
From 22-APR-10 16:52:00 to 22-APR-10 16:54:00 (MST-7)
Location: FIRSTVIEW
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The spotter reported the tornado developed on the north side of Road DD and Road 34 and then moved northeast.  Tornado remained over open, rural portions of the county with no known damage.

Hail in KIT CARSON, COLORADO
From 22-APR-10 16:20:00 to 22-APR-10 16:20:00 (MST-7)
Location: STRATTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported hail to a depth of three inches.

Hail in KIT CARSON, COLORADO
From 22-APR-10 16:42:00 to 22-APR-10 16:42:00 (MST-7)
Location: STRATTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KIT CARSON, COLORADO
From 22-APR-10 16:50:00 to 22-APR-10 16:50:00 (MST-7)
Location: STRATTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement indicated dime to nickel size hail covered the ground as well as Interstate 70.  Road crews were called out to clear the Interstate. Also minor street flooding reported on highway 24, two miles east of Stratton.

Hail in YUMA, COLORADO
From 22-APR-10 16:52:00 to 22-APR-10 16:52:00 (MST-7)
Location: IDALIA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIT CARSON, COLORADO
From 22-APR-10 17:54:00 to 22-APR-10 17:54:00 (MST-7)
Location: BURLINGTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in CHEYENNE, COLORADO
From 22-APR-10 14:55:00 to 22-APR-10 14:55:00 (MST-7)
Location: KIT CARSON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Observer reported ping pong ball sized hail covering the ground.

Hail in CHEYENNE, COLORADO
From 22-APR-10 15:04:00 to 22-APR-10 15:04:00 (MST-7)
Location: KIT CARSON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CHEYENNE, COLORADO
From 22-APR-10 15:53:00 to 22-APR-10 15:53:00 (MST-7)
Location: KIT CARSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CHEYENNE, COLORADO
From 22-APR-10 15:55:00 to 22-APR-10 15:55:00 (MST-7)
Location: KIT CARSON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail was mostly golf ball sized but a few stones were 2.0-2.5 inches in diameter.

Hail in CHEYENNE, COLORADO
From 22-APR-10 16:04:00 to 22-APR-10 16:04:00 (MST-7)
Location: KIT CARSON
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: COOP Observer

Observer reported ten windows were broken in his house, two vehicles completely damaged beyond repair, and hail damage to all buildings.

Hail in CHEYENNE, COLORADO
From 22-APR-10 00:40:00 to 22-APR-10 00:40:00 (MST-7)
Location: ARAPAHOE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in KIT CARSON, COLORADO
From 22-APR-10 17:55:00 to 22-APR-10 17:55:00 (MST-7)
Location: BURLINGTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in CHEYENNE, COLORADO
From 22-APR-10 15:24:00 to 22-APR-10 15:28:00 (MST-7)
Location: KIT CARSON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The tornado lasted about 4 minutes before roping out.  No known damage.

Tornado in CHEYENNE, COLORADO
From 22-APR-10 17:05:00 to 22-APR-10 17:09:00 (MST-7)
Location: FIRSTVIEW
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado remained over open, rural portions of the county with no known damage.

Flash Flood in CHEYENNE, COLORADO
From 22-APR-10 17:12:00 to 22-APR-10 20:12:00 (MST-7)
Location: FIRSTVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooding reported along Road DD between Roads 34 and 38 in extreme northern Cheyenne county.

Tornado in CHEYENNE, COLORADO
From 22-APR-10 16:12:00 to 22-APR-10 16:20:00 (MST-7)
Location: FIRSTVIEW
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The storm chaser reported this tornado became rain-wrapped.  Tornado remained over open, rural portions of the county with no known damage.