Deep low pressure moved across the northern Great Lakes, with a strong cold front trailing well south into Arkansas. A 50 to 60 knot low level jet aided in advecting in dewpoints greater than 60 degrees. 0-1km storm relative helicity values of 400 to 600 m2/s2 setup the perfect environment for individual thunderstorms to rapidly rotate with the lower values into far southern Lower Michigan. While favorable conditions existed, the area was just far enough north of the best conditions to keep the most severe weather away. However, isolated wind damage and one tornado was reported.

Thunderstorm Wind in CASS, MICHIGAN
From 17-NOV-13 15:33:00 to 17-NOV-13 15:34:00 (EST-5)
Location: JONES
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported seven power poles were snapped. Other damage included the roof torn off a small shed and several center pivots being damaged. A snowmobile trailer was lifted and then tossed 100 yards.

Thunderstorm Wind in BRANCH, MICHIGAN
From 17-NOV-13 16:10:00 to 17-NOV-13 16:11:00 (EST-5)
Location: UNION CITY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported several trees down near Union Lake.

Tornado in CASS, MICHIGAN
From 17-NOV-13 15:27:00 to 17-NOV-13 15:29:00 (EST-5)
Location: PARK SHR RESORT
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A survey of damage in the Cassopolis area by a NWS Survey team revealed that a EF1 tornado produced damage along a roughly four tenths of a mile path. Touchdown occurred on the southern outskirts of Cassopolis at a farm where a older two story barn was severely damaged with the entire second story of the barn being destroyed with damage thrown upward of 200 yards downstream (DI: SBO DOD 8). The tornado continued quickly northeast, passing across the northwestern part of the Ross Beatty Jr./Sr. High School property and impacting a detached two car garage, causing its total destruction (DI: SBO DOD: 6). Debris was thrown up to 500 yards northeast from the point of impact onto the Park Shore Golf Course, where several trees were snapped or uprooted. Maximum wind speeds with the tornado are estimated at 110 mph.

Thunderstorm Wind in BERRIEN, MICHIGAN
From 17-NOV-13 14:55:00 to 17-NOV-13 14:56:00 (EST-5)
Location: STEVENSVILLE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported multiple trees were blown down on Red Arrow Highway. A tree was also down onto a local residence.

Thunderstorm Wind in CASS, MICHIGAN
From 17-NOV-13 15:25:00 to 17-NOV-13 15:26:00 (EST-5)
Location: LA GRANGE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter found tree limbs down. Damage to a building was reported by the spotter, but no details were given on the amount of damage.

Thunderstorm Wind in ST. JOSEPH, MICHIGAN
From 17-NOV-13 15:51:00 to 17-NOV-13 15:52:00 (EST-5)
Location: CENTREVILLE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported trees and power lines down throughout the entire county.