During the afternoon hours, a strong supercell developed over Logan and Washington Counties. As the storm moved southeast near the community of Hyde, Colorado, it produced a EF-3 tornado that continued into Yuma County. The tornado reached it's peak intensity while just southwest of the city of Yuma with significant damage to a residence and two metal buildings. The supercell continued to move south then southeast across Yuma County to produce a total of seven tornadoes, with one EF-2 tornado moving into far north Kit Carson County. The other tornadoes were ranked EF-U with another north of Abarr ranked an EF-0. The storm also produced thunderstorm wind gusts up to 100 mph with damage to trees and power poles. Large hail was another hazard produced with 1 to 5.25 inch hail reported across Yuma County. The 5.25 inch hailstone fell near Kirk, Colorado, and set a new hail size record for the state of Colorado.  After crossing into Kit Carson County the thunderstorm turned east, producing more severe weather in Sherman County Kansas.

Hail in YUMA, COLORADO
From 08-AUG-23 18:10:00 to 08-AUG-23 18:10:00 (MST-7)
Location: IDALIA
Magnitude: 2.50 
Reported by: Social Media

Social media report with pictures of hail ranging from golf ball to tennis ball in size.

Hail in YUMA, COLORADO
From 08-AUG-23 17:00:00 to 08-AUG-23 17:00:00 (MST-7)
Location: ABARR
Magnitude: 4.00 
Reported by: Storm Chaser

A storm chaser reported 3.5 inch to 4 inch hail near the intersection of Highway 59 and County Road 25.

Tornado in YUMA, COLORADO
From 08-AUG-23 16:30:00 to 08-AUG-23 16:46:00 (MST-7)
Location: SCHRAMM
Tornado F-scale: EFU
Reported by: NWS Storm Survey

A multivortex tornado was observed moving between County Roads 34 and 29 across open land. No damage was reported.

Tornado in YUMA, COLORADO
From 08-AUG-23 17:04:00 to 08-AUG-23 17:08:00 (MST-7)
Location: ABARR
Tornado F-scale: EF0
Reported by: NWS Storm Survey

Chasers observed a tornado in the location with damage to corn crop circles found via Sentinel 2 imagery.

Tornado in YUMA, COLORADO
From 08-AUG-23 17:19:00 to 08-AUG-23 17:22:00 (MST-7)
Location: ABARR
Tornado F-scale: EFU
Reported by: NWS Storm Survey

Multiple storm chasers reported a brief rope tornado over an open field. No damage was observed.

Thunderstorm Wind in YUMA, COLORADO
From 08-AUG-23 17:19:00 to 08-AUG-23 17:19:00 (MST-7)
Location: ABARR
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter estimated 60 mph winds as a supercell thunderstorm moved over the location.

Thunderstorm Wind in YUMA, COLORADO
From 08-AUG-23 16:20:00 to 08-AUG-23 16:20:00 (MST-7)
Location: YUMA ARPT
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: NWS Storm Survey

Top branches of a tree snapped off and laying towards the southeast.

Hail in YUMA, COLORADO
From 08-AUG-23 16:08:00 to 08-AUG-23 16:08:00 (MST-7)
Location: YUMA
Magnitude: 4.00 
Reported by: Storm Chaser

Hail in YUMA, COLORADO
From 08-AUG-23 16:18:00 to 08-AUG-23 16:18:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.75 
Reported by: Public

Hail in YUMA, COLORADO
From 08-AUG-23 18:07:00 to 08-AUG-23 18:16:00 (MST-7)
Location: IDALIA
Magnitude: 1.50 
Reported by: Public

Multiple reports of dime to ping pong ball sized hail observed in Idalia over a duration of nine minutes.

Tornado in YUMA, COLORADO
From 08-AUG-23 17:23:00 to 08-AUG-23 17:32:00 (MST-7)
Location: ABARR
Tornado F-scale: EFU
Reported by: NWS Storm Survey

A tornado remained in open fields, short of crossing County Road J. No damage was observed.

Tornado in YUMA, COLORADO
From 08-AUG-23 18:00:00 to 08-AUG-23 18:14:00 (MST-7)
Location: KIRK
Tornado F-scale: EFU
Reported by: NWS Storm Survey

The tornado faded and reappeared more than once during its lifetime. The tornado ended before crossing CR S, remaining over an open field. No damage was observed.

Hail in YUMA, COLORADO
From 08-AUG-23 16:40:00 to 08-AUG-23 16:40:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.75 
Reported by: Trained Spotter

Up to golf ball hail observed.

Hail in YUMA, COLORADO
From 08-AUG-23 16:08:00 to 08-AUG-23 16:08:00 (MST-7)
Location: YUMA
Magnitude: 1.75 
Reported by: Social Media

Hail in YUMA, COLORADO
From 08-AUG-23 16:16:00 to 08-AUG-23 16:16:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in YUMA, COLORADO
From 08-AUG-23 16:20:00 to 08-AUG-23 16:20:00 (MST-7)
Location: YUMA ARPT
Magnitude: 87.00 EG
Property damage: 145.00K
Reported by: NWS Storm Survey

Five power poles were blown down or snapped along Highway 59.

Hail in YUMA, COLORADO
From 08-AUG-23 17:00:00 to 08-AUG-23 17:00:00 (MST-7)
Location: ABARR
Magnitude: 2.50 
Reported by: Public

Hail in YUMA, COLORADO
From 08-AUG-23 18:22:00 to 08-AUG-23 18:22:00 (MST-7)
Location: KIRK
Magnitude: 5.25 
Reported by: Storm Chaser

Hail measured at 5.25 inches fell on Hwy 36. This hail stone was later determined to be a new Colorado state record for largest hail stone.

Hail in YUMA, COLORADO
From 08-AUG-23 16:55:00 to 08-AUG-23 16:55:00 (MST-7)
Location: ABARR
Magnitude: 2.75 
Reported by: Public

Multiple reports of large hail from storm chasers on the highway and a homeowner next to the highway of ping pong ball to baseball sized hail.

Tornado in YUMA, COLORADO
From 08-AUG-23 18:25:00 to 08-AUG-23 18:40:00 (MST-7)
Location: IDALIA
Tornado F-scale: EF2
Property damage: 30.00K
Reported by: NWS Storm Survey

Based on damage to power poles the tornado tracked south than east along CR 2. The tornado damaged half an irrigation pivot and snapped nine power poles along CR 2. Then it shifted south again before reaching the CR2/ CR Y intersection. Based on radar data the tornado continued south-southeast into Kit Carson County, ending northwest of the CR MM/CR 44 intersection.

Tornado in YUMA, COLORADO
From 08-AUG-23 15:57:00 to 08-AUG-23 16:25:00 (MST-7)
Location: YUMA ARPT
Tornado F-scale: EF3
Property damage: 1.00M
Reported by: NWS Storm Survey

The tornado began in far eastern Washington County near the town of Hyde and moved east-southeast into northwest Yuma County. In Yuma County, the tornado remained southwest of the city of Yuma, where it looped around three times along the path causing damage to irrigation pivots, trees, and numerous power poles. The tornado dissipated during a fourth large loop. There was also significant damage to a residential property, three grain bins, and a machine shed towards the end of the path. Image of the actual tornado path is attached.

Hail in CHEYENNE, COLORADO
From 08-AUG-23 21:25:00 to 08-AUG-23 21:25:00 (MST-7)
Location: AROYA
Magnitude: 2.75 
Property damage: 10.00K
Reported by: Broadcast Media

Baseball size hail broke numerous double paned windows in a home in extreme northwest Cheyenne County. A few miles away, quarter to golf ball size hail accumulated to a depth of six inches.

Hail in YUMA, COLORADO
From 08-AUG-23 16:40:00 to 08-AUG-23 16:40:00 (MST-7)
Location: SCHRAMM
Magnitude: 3.00 
Reported by: Social Media

Thunderstorm Wind in KIT CARSON, COLORADO
From 08-AUG-23 20:10:00 to 08-AUG-23 20:10:00 (MST-7)
Location: PECONIC
Magnitude: 61.00 EG
Property damage: 1.00K
Reported by: Social Media

A few healthy 2 inch tree limbs were reported down.

Hail in KIT CARSON, COLORADO
From 08-AUG-23 20:10:00 to 08-AUG-23 20:10:00 (MST-7)
Location: PECONIC
Magnitude: 1.00 
Reported by: Public

Hail was observed at MM 447 on I-70.

Hail in YUMA, COLORADO
From 08-AUG-23 16:48:00 to 08-AUG-23 16:48:00 (MST-7)
Location: YUMA ARPT
Magnitude: 1.25 
Reported by: Public

Tornado in KIT CARSON, COLORADO
From 08-AUG-23 18:40:00 to 08-AUG-23 18:47:00 (MST-7)
Location: BURLINGTON ARPT
Tornado F-scale: EF2
Reported by: NWS Storm Survey

Based on damage to power poles the tornado tracked south then east along CR 2. The tornado damaged half an irrigation pivot and snapped nine power poles along CR 2. Then it shifted south again before reaching the CR2/ CR Y intersection. Based on radar data the tornado continued south-southeast into Kit Carson County, ending northwest of the CR MM/CR 44 intersection. No damage was observed in Kit Carson County.