A particularly dangerous thunderstorm moved south across Eastern Colorado during the evening near a stationary front.  As the thunderstorm moved through Kit Carson and Cheyenne counties it produced a swath of damage from the combined effects of baseball size hail and thunderstorm wind gusts.  The highest wind gust reported was 83 MPH in the northwest part of Kit Carson County.  Aside from the structural damage, many animals in the path of this storm were killed, including nine antelope south of Seibert.

Hail in KIT CARSON, COLORADO
From 29-JUL-18 17:03:00 to 29-JUL-18 17:03:00 (MST-7)
Location: FLAGLER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in KIT CARSON, COLORADO
From 29-JUL-18 17:15:00 to 29-JUL-18 17:15:00 (MST-7)
Location: SEIBERT
Magnitude: 91.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A number of buildings in Seibert sustained damage.  The post office roof had roughly half the shingles blown off.  One machine shed was completely destroyed, with the foundation blown clean.  A second machine shed, that was built using concrete blocks, only had a third of the roof blown off.  A building in town had the entire roof blown off.  A pine tree was uprooted and resting on the house next to it.  A small machine shed was flipped over and blown onto a road in town.  There were also many homes with vinyl siding destroyed on the windward side of the home from the hail and wind.

Hail in KIT CARSON, COLORADO
From 29-JUL-18 17:15:00 to 29-JUL-18 17:15:00 (MST-7)
Location: SEIBERT
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Public

The hail was at least two inches in diameter.

Hail in CHEYENNE, COLORADO
From 29-JUL-18 17:48:00 to 29-JUL-18 17:48:00 (MST-7)
Location: KIT CARSON
Magnitude: 2.75 
Crop damage: 0.00K
Reported by: Public

Three pigs, an unknown number of cattle and antelope were killed as the storm moved through.

Hail in CHEYENNE, COLORADO
From 29-JUL-18 17:55:00 to 29-JUL-18 17:55:00 (MST-7)
Location: KIT CARSON
Magnitude: 1.50 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: COOP Observer

At least one vehicle window was broken by the hail.

Hail in CHEYENNE, COLORADO
From 29-JUL-18 18:01:00 to 29-JUL-18 18:01:00 (MST-7)
Location: KIT CARSON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in KIT CARSON, COLORADO
From 29-JUL-18 17:02:00 to 29-JUL-18 17:28:00 (MST-7)
Location: FLAGLER
Magnitude: 72.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Gusts of 58-83 MPH occurred as the storm moved through.

Hail in KIT CARSON, COLORADO
From 29-JUL-18 17:10:00 to 29-JUL-18 17:10:00 (MST-7)
Location: FLAGLER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The hail was at least golf ball size.

Hail in KIT CARSON, COLORADO
From 29-JUL-18 17:10:00 to 29-JUL-18 17:34:00 (MST-7)
Location: FLAGLER
Magnitude: 2.75 
Crop damage: 0.00K
Reported by: Public

The hail started out as baseball size then declined to quarter size.  The hail was accompanied with wind gusts of an unknown magnitude due to the hail damaging the anemometer.  The combined effect did significant damage to buildings, trees and vehicles.