Two rounds of storms moved across southeast Minnesota on May 19th. The first occurred from late morning through the middle of the afternoon and produced primarily large hail across Mower and Olmsted Counties. The largest reported hail with this activity was ping pong ball sized near Lyle (Mower County), Adams (Mower County), south of Rochester (Olmsted County) and east of Rochester. The second round of storms also produced hail, although not as large as the earlier storms. The largest reported hail in the late afternoon was quarter sized north of Genoa (Olmsted County). A large tree, estimated to be four feet in diameter, was blown down near Whalan (Fillmore County). Flash flooding across eastern Winona County caused several mud slides, washouts and some cars were submerged in water. Winona County declared a state of emergency and the Governor of Minnesota authorized emergency assistance to help with the recovery.

Hail in MOWER, MINNESOTA
From 19-MAY-22 11:30:00 to 19-MAY-22 11:30:00 (CST-6)
Location: LYLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Half dollar sized hail fell in Lyle.

Hail in MOWER, MINNESOTA
From 19-MAY-22 11:29:00 to 19-MAY-22 11:29:00 (CST-6)
Location: LYLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MOWER, MINNESOTA
From 19-MAY-22 11:48:00 to 19-MAY-22 11:48:00 (CST-6)
Location: ADAMS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Ping pong ball sized hail fell just south of Adams.

Hail in MOWER, MINNESOTA
From 19-MAY-22 11:24:00 to 19-MAY-22 11:24:00 (CST-6)
Location: LYLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball sized hail was reported northwest of Lyle.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:36:00 to 19-MAY-22 12:36:00 (CST-6)
Location: (RST)ROCHESTER MUNI
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Ping pong ball sized hail fell south of Rochester.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:35:00 to 19-MAY-22 12:35:00 (CST-6)
Location: ROCHESTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:37:00 to 19-MAY-22 12:37:00 (CST-6)
Location: (RST)ROCHESTER MUNI
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar sized hail was reported south of Rochester.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:33:00 to 19-MAY-22 12:33:00 (CST-6)
Location: ROCHESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported southwest of Rochester.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:37:00 to 19-MAY-22 12:37:00 (CST-6)
Location: ROCHESTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:40:00 to 19-MAY-22 12:40:00 (CST-6)
Location: CHESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported east of Rochester.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:37:00 to 19-MAY-22 12:37:00 (CST-6)
Location: ROCHESTER
Magnitude: 1.50 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ping pong sized hail fell east of Rochester. Several cars were damaged by the hail.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 12:34:00 to 19-MAY-22 12:34:00 (CST-6)
Location: ROCHESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported southwest of Rochester.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 15:07:00 to 19-MAY-22 15:07:00 (CST-6)
Location: GENOA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 15:06:00 to 19-MAY-22 15:06:00 (CST-6)
Location: GENOA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported northwest of Genoa.

Hail in OLMSTED, MINNESOTA
From 19-MAY-22 18:37:00 to 19-MAY-22 18:37:00 (CST-6)
Location: (RST)ROCHESTER MUNI
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in FILLMORE, MINNESOTA
From 19-MAY-22 18:45:00 to 19-MAY-22 18:45:00 (CST-6)
Location: WHALAN
Magnitude: 35.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree, estimated to have a 4 foot diameter trunk, was blown down east of Whalan.

Hail in WINONA, MINNESOTA
From 19-MAY-22 19:42:00 to 19-MAY-22 19:42:00 (CST-6)
Location: NEW HARTFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter sized hail fell in New Hartford.

Hail in HOUSTON, MINNESOTA
From 19-MAY-22 19:35:00 to 19-MAY-22 19:35:00 (CST-6)
Location: HOKAH
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half dollar sized hail fell near Hokah.

Heavy Rain in WINONA, MINNESOTA
From 19-MAY-22 11:34:00 to 19-MAY-22 21:56:00 (CST-6)
Location: STOCKTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

In Stockton, 3.54 inches of rain fell.

Heavy Rain in WINONA, MINNESOTA
From 19-MAY-22 11:34:00 to 19-MAY-22 21:54:00 (CST-6)
Location: STOCKTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Just west of Stockton, 3.41 inches of rain fell.

Heavy Rain in WINONA, MINNESOTA
From 19-MAY-22 11:40:00 to 19-MAY-22 22:04:00 (CST-6)
Location: WINONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

On the southeast side of Winona, 3.29 inches of rain fell.

Thunderstorm Wind in OLMSTED, MINNESOTA
From 20-MAY-22 00:59:00 to 20-MAY-22 00:59:00 (CST-6)
Location: JUDGE
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The automated weather observing equipment at the Rochester airport measured a 63 mph gust.

Flash Flood in WINONA, MINNESOTA
From 19-MAY-22 21:45:00 to 19-MAY-22 23:45:00 (CST-6)
Location: WINONA MUNI ARPT
Flood cause: Heavy Rain
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Public

Runoff from heavy rains caused mud slides and washouts to occur in the area around Homer with the debris covering several roads. Some cars were submerged in the flood waters. A state of emergency was declared and the Governor of Minnesota authorized emergency assistance to help with the recovery.