Severe thunderstorms produced damaging wind and hail, along with torrential rainfall across the I-25 Corridor and Northeast Plains.  Areas hardest hit included:  eastern Boulder, Douglas, eastern Larimer, Washington and Weld counties.  Hail up to tennis ball size (2.5 inches), was observed near Black Hollow Reservoir east of Fort Collins.  Elsewhere the hail ranged from quarter to golfball size.  The hail damaged homes and vehicles.  Strong winds also produced some tree damage.  Torrential rainfall produced extensive street flooding around Fort Collins.  Torrential rain and small hail also occurred in the town of Estes Park. The hail piled up to a foot deep in spots, and had to be removed using snowplows. People in the community helped drivers dig out cars and clear the roadway on East Elkhorn Avenue.  Minor flooding also occurred in some of the nearby businesses.  Minor flash flooding was also observed in Washington County.

Hail in LARIMER, COLORADO
From 27-JUL-22 18:39:00 to 27-JUL-22 18:39:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 27-JUL-22 18:35:00 to 27-JUL-22 18:35:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.00 
Reported by: CoCoRaHS

Hail in WELD, COLORADO
From 27-JUL-22 17:08:00 to 27-JUL-22 17:08:00 (MST-7)
Location: GALETON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WELD, COLORADO
From 27-JUL-22 17:03:00 to 27-JUL-22 17:03:00 (MST-7)
Location: PURCELL
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in WELD, COLORADO
From 27-JUL-22 16:48:00 to 27-JUL-22 16:48:00 (MST-7)
Location: PIERCE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in WELD, COLORADO
From 27-JUL-22 16:25:00 to 27-JUL-22 16:25:00 (MST-7)
Location: NUNN
Magnitude: 1.00 
Reported by: CoCoRaHS

Thunderstorm Wind in WELD, COLORADO
From 27-JUL-22 15:41:00 to 27-JUL-22 15:41:00 (MST-7)
Location: ROCKPORT
Magnitude: 51.00 MG
Reported by: Mesonet

Hail in WELD, COLORADO
From 27-JUL-22 19:15:00 to 27-JUL-22 19:15:00 (MST-7)
Location: SEVERANCE
Magnitude: 1.50 
Reported by: CoCoRaHS

Thunderstorm Wind in LARIMER, COLORADO
From 27-JUL-22 19:00:00 to 27-JUL-22 19:00:00 (MST-7)
Location: TIMNATH
Magnitude: 52.00 EG
Reported by: CoCoRaHS

Large tree limbs were knocked down.

Hail in LARIMER, COLORADO
From 27-JUL-22 20:30:00 to 27-JUL-22 21:00:00 (MST-7)
Location: ESTES PARK
Magnitude: 0.75 
Reported by: Broadcast Media

Torrential hail and rain occurred in the town of Estes Park.  The hail piled up to a foot deep and snowplows were called in to remove it.

Flash Flood in WASHINGTON, COLORADO
From 27-JUL-22 22:54:00 to 27-JUL-22 23:54:00 (MST-7)
Location: OTIS STANSFIELD ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six inches of water was observed running across County Road 44 at Highway 61.

Thunderstorm Wind in DOUGLAS, COLORADO
From 27-JUL-22 22:33:00 to 27-JUL-22 22:33:00 (MST-7)
Location: PARKER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in DOUGLAS, COLORADO
From 27-JUL-22 22:23:00 to 27-JUL-22 22:23:00 (MST-7)
Location: HIGHLANDS RANCH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in JEFFERSON, COLORADO
From 27-JUL-22 22:09:00 to 27-JUL-22 22:09:00 (MST-7)
Location: COLUMBINE
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in BOULDER, COLORADO
From 27-JUL-22 21:00:00 to 27-JUL-22 21:00:00 (MST-7)
Location: GOLD HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARIMER, COLORADO
From 27-JUL-22 19:48:00 to 27-JUL-22 19:48:00 (MST-7)
Location: GLEN HAVEN
Magnitude: 1.50 
Reported by: Amateur Radio

Hail in WELD, COLORADO
From 27-JUL-22 19:37:00 to 27-JUL-22 19:37:00 (MST-7)
Location: SEVERANCE
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in WELD, COLORADO
From 27-JUL-22 19:27:00 to 27-JUL-22 19:27:00 (MST-7)
Location: SEVERANCE
Magnitude: 1.75 
Reported by: Storm Chaser

Hail in WELD, COLORADO
From 27-JUL-22 19:08:00 to 27-JUL-22 19:08:00 (MST-7)
Location: SEVERANCE
Magnitude: 2.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in WELD, COLORADO
From 27-JUL-22 19:02:00 to 27-JUL-22 19:02:00 (MST-7)
Location: SEVERANCE
Magnitude: 2.50 
Reported by: NWS Employee

Hail in LARIMER, COLORADO
From 27-JUL-22 19:00:00 to 27-JUL-22 19:00:00 (MST-7)
Location: TIMNATH
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Wind-driven hail caused some damage to a house, and tree limbs were knocked down.

Hail in LARIMER, COLORADO
From 27-JUL-22 18:53:00 to 27-JUL-22 18:53:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.50 
Reported by: Law Enforcement

Windows were smashed by large hail.

Hail in LARIMER, COLORADO
From 27-JUL-22 18:48:00 to 27-JUL-22 18:48:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.75 
Reported by: CoCoRaHS

Hail in LARIMER, COLORADO
From 27-JUL-22 18:47:00 to 27-JUL-22 18:47:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.75 
Reported by: Social Media

Hail in LARIMER, COLORADO
From 27-JUL-22 18:47:00 to 27-JUL-22 18:47:00 (MST-7)
Location: WELLINGTON
Magnitude: 2.00 
Reported by: Emergency Manager

Hail in LARIMER, COLORADO
From 27-JUL-22 18:45:00 to 27-JUL-22 18:45:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.50 
Reported by: NWS Employee

Hail damaged a window.

Hail in WELD, COLORADO
From 27-JUL-22 18:44:00 to 27-JUL-22 18:44:00 (MST-7)
Location: PIERCE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LARIMER, COLORADO
From 27-JUL-22 18:41:00 to 27-JUL-22 18:41:00 (MST-7)
Location: WELLINGTON
Magnitude: 1.00 
Reported by: Trained Spotter