Prolonged hot and humid conditions coupled with dry mid-levels in the atmosphere, led to extreme amounts of mixed-layer convective available potential energy (MLCAPE). The existence of deep layer shear allowed for numerous strong updrafts to develop across East Central MN with the primary hazard being hail in the afternoon hours. Later that evening in Southwestern MN, a surface boundary would converge on a cold pool which then would produce a line of thunderstorms capable of producing damaging wind gusts.
Hail measurements ranged between penny (0.75 inch) to Hen-Egg (2.0 inch) size. The highest measured hail was reported in the city of Morgan, MN or 13 miles SE of Redwood Falls located in Redwood County.
Strong winds uprooted trees, broke large tree branches across much of the region affected by these storms. The areas with the most damage occurred in Chisago County as well as a line from Nicollet to Waseca Counties. The strongest gust (57 mph) was recorded at 11:56 PM at the Mankato Regional Airport.

Hail in REDWOOD, MINNESOTA
From 27-JUL-23 16:05:00 to 27-JUL-23 16:15:00 (CST-6)
Location: MORGAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHISAGO, MINNESOTA
From 27-JUL-23 18:10:00 to 27-JUL-23 18:20:00 (CST-6)
Location: TAYLORS FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in REDWOOD, MINNESOTA
From 27-JUL-23 16:05:00 to 27-JUL-23 16:15:00 (CST-6)
Location: MORGAN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Mostly quarter size hail fell but spotter was able to measure one hail stone that was half-dollar size.

Hail in CHISAGO, MINNESOTA
From 27-JUL-23 14:40:00 to 27-JUL-23 14:50:00 (CST-6)
Location: RUSH CITY MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Photo measurement provided via social media.

Thunderstorm Wind in CHISAGO, MINNESOTA
From 27-JUL-23 14:10:00 to 27-JUL-23 14:20:00 (CST-6)
Location: SUNRISE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees measuring 8 to 10-inch diameter and powerlines down across roadway, 3 miles east of Sunrise, MN or 7 miles NE of North Branch, MN.

Thunderstorm Wind in CHISAGO, MINNESOTA
From 27-JUL-23 14:45:00 to 27-JUL-23 15:00:00 (CST-6)
Location: RUSH CITY MUNI ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several trees down 2 miles ESE of Rush City, MN.

Thunderstorm Wind in BLUE EARTH, MINNESOTA
From 27-JUL-23 23:20:00 to 27-JUL-23 23:30:00 (CST-6)
Location: MANKATO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm winds brough down several trees and large branches down in the Skyline neighborhood in Mankato, MN.

Hail in REDWOOD, MINNESOTA
From 27-JUL-23 16:05:00 to 27-JUL-23 16:15:00 (CST-6)
Location: MORGAN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Photo of hail stone that fell from a strong thunderstorm provided through social media.

Hail in ISANTI, MINNESOTA
From 27-JUL-23 18:10:00 to 27-JUL-23 18:20:00 (CST-6)
Location: WEBER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm produced a combination of quarter size hail up to half-dollar size hail.

Hail in SHERBURNE, MINNESOTA
From 27-JUL-23 19:30:00 to 27-JUL-23 19:40:00 (CST-6)
Location: ELK RIVER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MEEKER, MINNESOTA
From 27-JUL-23 19:50:00 to 27-JUL-23 20:00:00 (CST-6)
Location: LITCHFIELD MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BLUE EARTH, MINNESOTA
From 27-JUL-23 23:20:00 to 27-JUL-23 23:30:00 (CST-6)
Location: MANKATO
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Large branches downed from strong thunderstorm wind gusts in Lion Park. Mankato Regional Airport recorded a 50-mph gust at 11:56 PM.

Thunderstorm Wind in WASECA, MINNESOTA
From 27-JUL-23 23:40:00 to 27-JUL-23 23:50:00 (CST-6)
Location: JANESVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm winds brought down a 10-inch diameter tree limb which blocked a roadway in Janesville, MN.

Hail in MEEKER, MINNESOTA
From 27-JUL-23 19:50:00 to 27-JUL-23 20:00:00 (CST-6)
Location: LITCHFIELD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KANDIYOHI, MINNESOTA
From 27-JUL-23 20:30:00 to 27-JUL-23 20:40:00 (CST-6)
Location: LAKE LILLIAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in REDWOOD, MINNESOTA
From 27-JUL-23 16:40:00 to 27-JUL-23 16:50:00 (CST-6)
Location: MORGAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ISANTI, MINNESOTA
From 27-JUL-23 18:10:00 to 27-JUL-23 18:20:00 (CST-6)
Location: WEBER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in NICOLLET, MINNESOTA
From 27-JUL-23 22:30:00 to 27-JUL-23 23:30:00 (CST-6)
Location: LAFAYETTE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A strong line of thunderstorms progressed across Nicollet County where numerous trees downed and flattened corn along a extending line from Lafayette, MN to North Mankato, MN. Local broadcast media provided a photo of a large tree branch down in Spring Lake Park which had been brought down by strong thunderstorm winds. The AWOS observation site located at Mankato Regional Airport recorded a wind gust of 50 mph at 11:56 PM.

Thunderstorm Wind in NICOLLET, MINNESOTA
From 27-JUL-23 23:10:00 to 27-JUL-23 23:20:00 (CST-6)
Location: NORTH MANKATO
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Photo of large tree branches downed by strong thunderstorm winds in Spring Lake Park. Mankato Regional Airport reported a 50 mph wind gusts at 11:56 PM.

Hail in NICOLLET, MINNESOTA
From 27-JUL-23 23:15:00 to 27-JUL-23 23:25:00 (CST-6)
Location: OSHAWA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public