Thunderstorms in northeast Colorado resulted in giant hailstones, a few tornadoes, and localized flash flooding. This event will be remembered for producing a new State of Colorado record hailstone, measured at 4.83 inches in diameter.

Flash Flood in KIT CARSON, COLORADO
From 13-AUG-19 14:52:00 to 13-AUG-19 14:52:00 (MST-7)
Location: BURLINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Street flooding was reported about 1 mile south and 2 miles west of Burlington, CO.

Funnel Cloud in YUMA, COLORADO
From 13-AUG-19 12:24:00 to 13-AUG-19 12:24:00 (MST-7)
Location: SCHRAMM
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in YUMA, COLORADO
From 13-AUG-19 12:23:00 to 13-AUG-19 12:23:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in YUMA, COLORADO
From 13-AUG-19 12:31:00 to 13-AUG-19 12:31:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KIT CARSON, COLORADO
From 13-AUG-19 14:00:00 to 13-AUG-19 14:00:00 (MST-7)
Location: STRATTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIT CARSON, COLORADO
From 13-AUG-19 14:00:00 to 13-AUG-19 14:00:00 (MST-7)
Location: STRATTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIT CARSON, COLORADO
From 13-AUG-19 14:00:00 to 13-AUG-19 14:00:00 (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 13-AUG-19 14:08:00 to 13-AUG-19 14:08:00 (MST-7)
Location: BURLINGTON ARPT
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIT CARSON, COLORADO
From 13-AUG-19 14:05:00 to 13-AUG-19 14:05:00 (MST-7)
Location: STRATTON
Magnitude: 4.83 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The Colorado State Climatologist measured the hailstone using a set of calipers to get the exact measurement to the hundredth of an inch. The hailstone measured 4.83 inches in diameter at its widest point. The home owner commented that the hailstone was brought indoors and secured in a freezer approximately 30 minutes after falling due to safety concerns from ongoing severe weather. Despite social media pictures taken soon after the hailstone had fallen, which were higher than the 4.83 inch measurement, the official diameter measurement is 4.83 inches. The hailstone weighed 8.5 ounces, its widest circumference was 12.875 inches, and its volume was later measured using 3D imagery at 16.549 cubic inches.

Hail in KIT CARSON, COLORADO
From 13-AUG-19 14:58:00 to 13-AUG-19 14:58:00 (MST-7)
Location: BURLINGTON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in YUMA, COLORADO
From 13-AUG-19 12:55:00 to 13-AUG-19 13:05:00 (MST-7)
Location: ABARR
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two tornadoes were observed simultaneously.

Tornado in YUMA, COLORADO
From 13-AUG-19 13:00:00 to 13-AUG-19 13:15:00 (MST-7)
Location: ABARR
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two tornadoes were observed simultaneously.

Tornado in KIT CARSON, COLORADO
From 13-AUG-19 13:52:00 to 13-AUG-19 14:05:00 (MST-7)
Location: STRATTON
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Rain wrapped tornado was reported by storm chaser.