As a cold front moved across the region, a squall line developed and moved rapidly east across the forecast area. There were numerous reports of damaging winds, large hail and 8 tornadoes.

Hail in ADAMS, ILLINOIS
From 06-MAR-17 22:30:00 to 06-MAR-17 22:30:00 (CST-6)
Location: QUINCY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ADAMS, ILLINOIS
From 06-MAR-17 22:41:00 to 06-MAR-17 22:41:00 (CST-6)
Location: (UIN)QUINCY MUNI ARP
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in PIKE, ILLINOIS
From 06-MAR-17 23:34:00 to 06-MAR-17 23:34:00 (CST-6)
Location: PLEASANT HILL
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew over a utility pole in town.

Thunderstorm Wind in GREENE, ILLINOIS
From 07-MAR-17 00:11:00 to 07-MAR-17 00:11:00 (CST-6)
Location: ROODHOUSE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MADISON, ILLINOIS
From 07-MAR-17 00:45:00 to 07-MAR-17 00:45:00 (CST-6)
Location: FAIRMONT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds snapped off several large tree limbs.

Thunderstorm Wind in MACOUPIN, ILLINOIS
From 07-MAR-17 00:45:00 to 07-MAR-17 00:45:00 (CST-6)
Location: BUNKER HILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds took some shingles off of roofs, knocked over fences and snapped a few small trees around town. Also, some sheet metal was torn off of a couple of barns in the area.

Thunderstorm Wind in MACOUPIN, ILLINOIS
From 07-MAR-17 00:52:00 to 07-MAR-17 00:52:00 (CST-6)
Location: STAUNTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew the awning off of a business in town.

Tornado in MACOUPIN, ILLINOIS
From 07-MAR-17 00:50:00 to 07-MAR-17 00:57:00 (CST-6)
Location: SAWYERVILLE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado first formed on the southwest side of Sawyerville, destroying one garage and damaging two cars inside.  Damage was rated EF1 in this area. Several outbuildings sustained minor to moderate damage as well as the tornado moved through the southern portions of town. Most damage was to trees and loss of roof covering on homes and outbuildings. Several power poles were also downed.  Further to the northeast, the tornado caused similar damage in the Lake Kaho area. The tornado crossed Interstate 55 near Panther Creek Road, continued northeast crossing into Montgomery County about 2.2 miles northeast of Interstate 55.

Tornado in MONTGOMERY, ILLINOIS
From 07-MAR-17 00:57:00 to 07-MAR-17 01:03:00 (CST-6)
Location: LITCHFIELD MUNI ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado continued northeast crossing into Montgomery County about 2.2 miles northeast of Interstate 55.  After crossing U.S. Route 66, the tornado caused minor roof and tree damage on East First Road just south of Grosenheider Lane.  For the remainder of the track, minor roof, siding and tree damage was observed. The tornado dissipated southeast of Litchfield along Flat School Road. Damage was rated EF0 in Montgomery County. Overall, the tornado was rated EF1 with a path length of 12.92 miles and a max path width of 100 yards.

Thunderstorm Wind in MONTGOMERY, ILLINOIS
From 07-MAR-17 01:04:00 to 07-MAR-17 01:04:00 (CST-6)
Location: LITCHFIELD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds snapped off several large tree limbs.

Tornado in MONTGOMERY, ILLINOIS
From 07-MAR-17 01:14:00 to 07-MAR-17 01:19:00 (CST-6)
Location: IRVING
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado formed on east side of Irving and moved northeast. The bulk of the damage was EF0 with downed large tree limbs and partial removal of metal covering of farm outbuildings. A couple of grain bins, empty, were tossed into fields about 100 to 200 yards, on North 16th Avenue, just west of Witt Trail. One home east of Witt had the chimney blown off. A barn at the same location was pushed such that it ended up leaning about 6 inches off center. The tornado lifted and dissipated on Hillside Avenue about a quarter of a mile east of the intersection with East 22nd Road. Overall, the tornado was rated EF1 with a path length of 7.17 miles and a max path width of 100 yards.

Thunderstorm Wind in MONROE, ILLINOIS
From 07-MAR-17 01:05:00 to 07-MAR-17 01:05:00 (CST-6)
Location: COLUMBIA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down a highway sign on I-255.

Thunderstorm Wind in ST. CLAIR, ILLINOIS
From 07-MAR-17 01:27:00 to 07-MAR-17 01:27:00 (CST-6)
Location: MASCOUTAH
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CLINTON, ILLINOIS
From 07-MAR-17 01:45:00 to 07-MAR-17 01:45:00 (CST-6)
Location: BECKEMEYER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down a large tree at Redwood Street and Camp Joy Road.