A frontal boundary was slowly sinking south across forecast area. Several rounds of storms developed and  moved east along the front dumping up to 8 inches of rain in a 24 hour period from 7 am June 25th to 7 am June 26th.  This caused considerable flash flooding, especially in Lincoln County Missouri and Calhoun County Illinois. There were also numerous reports of damaging winds and large hail.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 25-JUN-15 17:25:00 to 25-JUN-15 17:25:00 (CST-6)
Location: ORCHARD FARM
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down numerous large tree limbs around town.

Hail in LINCOLN, MISSOURI
From 25-JUN-15 17:58:00 to 25-JUN-15 17:58:00 (CST-6)
Location: TROY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in LEWIS, MISSOURI
From 26-JUN-15 12:00:00 to 26-JUN-15 14:55:00 (CST-6)
Location: FENWAY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 4 inches of rain fell in a short amount of time onto already saturated soils causing flash flooding.  Several roads were flooded including Highway J just south of Lewistown.

Flash Flood in LINCOLN, MISSOURI
From 25-JUN-15 19:15:00 to 26-JUN-15 06:30:00 (CST-6)
Location: LOUISVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 8 inches of rain fell over a short amount of time onto already saturated soils causing flash flooding. Numerous roads were flooded including Highway 79 in Winfield, Routes H and BB near Davis, and Routes O and D just southeast of Olney. Over 30 water rescues of over 50 people from homes and vehicles were performed throughout the county. The worst hit areas were Winfield, Troy, Davis, Hawk Point, and Old Monroe. About 2 miles south of Winfield, Bob's Creek was flowing so high and forcefully that the floodwaters washed away areas underneath the railroad tracks.

Flash Flood in KNOX, MISSOURI
From 26-JUN-15 07:40:00 to 26-JUN-15 13:00:00 (CST-6)
Location: COLONY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 3 inches of rain fell in a short amount of time onto already saturated soils causing flash flooding.  Several roads were flooded including Highway 15 in Edina.

Flash Flood in ST. CHARLES, MISSOURI
From 25-JUN-15 18:45:00 to 26-JUN-15 06:30:00 (CST-6)
Location: PORTAGE DES SIOUX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to three inches of rain fell in a short amount of time onto already saturated soils causing flash flooding.  Several roads were flooded including Highway 94 near Orchard Farm and Portage Des Sioux and Route H between Boschertown and Portage Des Sioux.

Flash Flood in BOONE, MISSOURI
From 25-JUN-15 19:15:00 to 26-JUN-15 06:30:00 (CST-6)
Location: ROCHEPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Up to four inches of rain fell in a short amount of time onto already saturated soils causing flash flooding.  Numerous roads were flooded including East Small Lane, off of Highway VV north of Columbia.

Thunderstorm Wind in AUDRAIN, MISSOURI
From 25-JUN-15 18:55:00 to 25-JUN-15 18:55:00 (CST-6)
Location: MEXICO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down a large tree onto Jefferson Road on the southeast side of town.

Thunderstorm Wind in MONROE, MISSOURI
From 25-JUN-15 18:55:00 to 25-JUN-15 18:55:00 (CST-6)
Location: SANTA FE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down a large tree.

Thunderstorm Wind in AUDRAIN, MISSOURI
From 25-JUN-15 19:10:00 to 25-JUN-15 19:15:00 (CST-6)
Location: LADDONIA
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down several large trees and numerous tree limbs. Also, just east of Laddonia, the winds overturned several empty railroad cars. The railroad cars blocked the track's intersections with County Road 509 and Locust Street.

Hail in MONROE, MISSOURI
From 25-JUN-15 18:15:00 to 25-JUN-15 18:15:00 (CST-6)
Location: EVANSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in WARREN, MISSOURI
From 25-JUN-15 19:50:00 to 25-JUN-15 19:50:00 (CST-6)
Location: WARRENTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm wind blew the roof off of a mobile home and knocked down several large trees and power lines.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 25-JUN-15 20:24:00 to 25-JUN-15 20:24:00 (CST-6)
Location: CHESTERFIELD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds blew down several large tree limbs.

Thunderstorm Wind in MONROE, MISSOURI
From 25-JUN-15 18:22:00 to 25-JUN-15 18:32:00 (CST-6)
Location: MADISON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous large tree limbs and a couple of trees.

Thunderstorm Wind in MONTGOMERY, MISSOURI
From 25-JUN-15 19:05:00 to 25-JUN-15 19:15:00 (CST-6)
Location: WELLSVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds several large trees as well as numerous large tree limbs.  One tree snapped and fell onto a home in Wellsville causing moderate damage and a two car carport was blown over.