Strong area of low pressure moved into the forecast area with a dry line out ahead of the main cold front.  Storms fired up along and just ahead of the dry line beginning in the early afternoon hours.  There were numerous reports of large hail with isolated damaging winds and tornadoes with this event.

Hail in FAYETTE, ILLINOIS
From 25-MAY-11 11:57:00 to 25-MAY-11 11:59:00 (CST-6)
Location: RAMSEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MONTGOMERY, ILLINOIS
From 25-MAY-11 14:04:00 to 25-MAY-11 14:04:00 (CST-6)
Location: TAYLOR SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ADAMS, ILLINOIS
From 25-MAY-11 14:10:00 to 25-MAY-11 14:10:00 (CST-6)
Location: QUINCY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MACOUPIN, ILLINOIS
From 25-MAY-11 14:50:00 to 25-MAY-11 14:50:00 (CST-6)
Location: BUNKER HILL
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MADISON, ILLINOIS
From 25-MAY-11 15:37:00 to 25-MAY-11 15:50:00 (CST-6)
Location: MADISON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MADISON, ILLINOIS
From 25-MAY-11 15:58:00 to 25-MAY-11 15:58:00 (CST-6)
Location: MITCHELL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MONTGOMERY, ILLINOIS
From 25-MAY-11 15:05:00 to 25-MAY-11 15:05:00 (CST-6)
Location: WAGGONER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds blew down several large trees and power lines around town.

Hail in ST. CLAIR, ILLINOIS
From 25-MAY-11 16:00:00 to 25-MAY-11 16:01:00 (CST-6)
Location: FREEBURG
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CLAIR, ILLINOIS
From 25-MAY-11 16:00:00 to 25-MAY-11 16:00:00 (CST-6)
Location: FREEBURG
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down numerous trees and power lines around town.

Hail in ST. CLAIR, ILLINOIS
From 25-MAY-11 16:10:00 to 25-MAY-11 16:10:00 (CST-6)
Location: MASCOUTAH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RANDOLPH, ILLINOIS
From 25-MAY-11 16:20:00 to 25-MAY-11 16:20:00 (CST-6)
Location: ELLIS GROVE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MADISON, ILLINOIS
From 25-MAY-11 16:21:00 to 25-MAY-11 16:21:00 (CST-6)
Location: HIGHLAND
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous large tree limbs.

Hail in RANDOLPH, ILLINOIS
From 25-MAY-11 16:48:00 to 25-MAY-11 16:48:00 (CST-6)
Location: BALDWIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in RANDOLPH, ILLINOIS
From 25-MAY-11 16:50:00 to 25-MAY-11 16:55:00 (CST-6)
Location: CHESTER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down several power poles on the east side of Chester.  Also, several trees were blown down along Illinois Route 3 between Chester and Rockwood.

Thunderstorm Wind in BOND, ILLINOIS
From 25-MAY-11 16:48:00 to 25-MAY-11 16:50:00 (CST-6)
Location: DURLEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds blew down several trees and power lines in Greenville and Smithboro.

Hail in MARION, ILLINOIS
From 25-MAY-11 16:50:00 to 25-MAY-11 16:50:00 (CST-6)
Location: CENTRALIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in BROWN, ILLINOIS
From 25-MAY-11 16:30:00 to 25-MAY-11 20:30:00 (CST-6)
Location: DAMON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to two inches of rain fell in a short amount of time causing flash flooding.  Several roads were closed due to flooding including County Roads 850N and 1600E between Copperstown and Star Bridge at the Brown/Schuyler county line.

Thunderstorm Wind in MARION, ILLINOIS
From 25-MAY-11 17:45:00 to 25-MAY-11 17:50:00 (CST-6)
Location: SLAP OUT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew down several trees.  A couple of the trees were blown onto County Highway 28 near Iuka Road and on Kell Road about 3 miles east of Kell.

Hail in MACOUPIN, ILLINOIS
From 25-MAY-11 15:00:00 to 25-MAY-11 15:00:00 (CST-6)
Location: CARLINVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in MONTGOMERY, ILLINOIS
From 25-MAY-11 16:49:00 to 25-MAY-11 16:49:00 (CST-6)
Location: NOKOMIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down several trees and power lines as well as numerous large tree limbs around town.

Thunderstorm Wind in MADISON, ILLINOIS
From 25-MAY-11 15:55:00 to 25-MAY-11 15:55:00 (CST-6)
Location: WOOD RIVER
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter