During the early morning of Tuesday, July 26th, 2022, a complex of training thunderstorms set up roughly along the I-70 corridor in Missouri and I-64 corridor in Illinois. Several rounds of thunderstorms with rainfall rates exceeding 2in/hr affected this area, including the St. Louis metropolitan area, through the early hours of July 26th and into the morning commute. Upwards of 11 of rain fell over the course of roughly 8 hours in an axis from Hawk Point, MO to St. Peters, MO according to radar-estimated rainfall products and several CoCoRaHS/spotter reports. A longer axis of over 8 of rain fell from northern Montgomery County in Missouri to St. Clair County in Illinois, causing multiple swift water rescues and scores of flooded interstates and homes across the St. Louis metropolitan area. St. Louis-Lambert International Airport also observed a new all-time record for daily precipitation: 8.64 of rain fell since midnight Central Standard Time (Daylight Savings Time is not used for climatological record-keeping). This value broke the previous record of 6.85, which occurred on August 20th, 1915 due to the remnants of the Galveston 1915 Hurricane. The storm-total rainfall was 9.07, but spans two days. Two fatalities were reported: one in St. Louis City, where a man drowned in his car near Skinker Blvd, and another in Hazelwood where a man drowned attempting to flee his flooded truck.

Flash Flood in AUDRAIN, MISSOURI
From 26-JUL-22 03:30:00 to 26-JUL-22 06:00:00 (CST-6)
Location: SKINNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to 7 inches of rain fell in a 6 to 10 hour period with the heaviest rain across the southern half of Audrain County. Numerous roads were flooded including U.S. Business 54, East Liberty Road at Reading Farms, South Morris Street, Lakeview Road at Elmwood Road, Fairground Road and Park Crest Road. Four vehicles were stranded on the flooded roadways. All of the vehicle occupants were moved to safety and no injuries were reported.

Flash Flood in MONTGOMERY, MISSOURI
From 26-JUL-22 02:00:00 to 26-JUL-22 06:00:00 (CST-6)
Location: WELLSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Up to 7 inches of rain fell in a 6 to 10 hour period causing flash flooding. Numerous roads were flooded across the northern half of the county, including Highway 19 just south of Wellsville, Route 161 between Buell and Route V, Route CC near White Oak Road, and Route E between Kneubuhler Road and Pine Knot Road. No injuries were reported.

Flash Flood in ST. LOUIS, MISSOURI
From 26-JUL-22 01:30:00 to 26-JUL-22 10:45:00 (CST-6)
Location: (SUS)SPIRIT/ST LOUIS
Flood cause: Heavy Rain
Property damage: 50.00M
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 10 inches of rain fell in a period of 8 hours causing catastrophic flooding in portions of St. Louis County. Numerous roads were flooded. There were multiple swift water rescues and scores of flooded interstates and homes across the St. Louis metropolitan area. One fatality was reported in Hazelwood where a 39 year old man drowned attempting to flee his flooded truck. His body was found about half a mile down stream from the semi truck. St. Louis-Lambert International Airport also observed a new all-time record for daily precipitation: 8.64 of rain fell since midnight Central Standard Time (Daylight Savings Time is not used for climatological record-keeping). This value broke the previous record of 6.85, which occurred on August 20th, 1915 due to the remnants of the Galveston 1915 Hurricane. The storm-total rainfall was 9.07, but spans two days. Several hundred homes and businesses sustained minor to major flood damage. A large number of unoccupied vehicles were damaged/destroyed due to the flooding as well.  Dollar amount damage so far is estimated around $50 million.

Flash Flood in ST. LOUIS (C), MISSOURI
From 26-JUL-22 02:30:00 to 26-JUL-22 10:45:00 (CST-6)
Location: CARONDELET
Flood cause: Heavy Rain
Property damage: 85.00M
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Up to 9 inches of rain fell in a period of 8 hours causing catastrophic flooding in portions of the city of St. Louis. Numerous roads were flooded. There were multiple swift water rescues and scores of flooded interstates and homes across the City of St. Louis. One fatality was at the intersection of Skinker Boulevard and Enright Avenue, just north of the Delmar Loop, where a 60 year old man drowned after driving into the flooded roadway. Firefighters helped or rescued around 70 residents. Property damage was very significant in some hard-hit areas, including the southwest part of the city where 14 to 15 homes experienced significant flooding. A large number of unoccupied vehicles were damaged/destroyed due to the flooding as well. The Metro Link station at Forest Park Parkway and DeBaliviere Avenue was flooded causing $35 million in damage to a two car train, tracks, towers, vehicles and equipment at the station. Dollar amount damage so far is estimated around $85 million.

Flash Flood in WARREN, MISSOURI
From 26-JUL-22 02:00:00 to 26-JUL-22 11:15:00 (CST-6)
Location: PENDLETON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to 10 inches of rain fell in a 6 to 10 hour period causing flash flooding. Numerous roads were flooded including Highway A at the intersection with Highway W, Morsey Center Road about half a mile east of Highway A, and State Highway 47 just south of Powerline Road. Culvert was washed away on Pin Oak Church Road just east of y intersection near New Truxton Road, making the road impassable.

Flash Flood in LINCOLN, MISSOURI
From 26-JUL-22 03:00:00 to 26-JUL-22 11:15:00 (CST-6)
Location: OLNEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Department of Highways

Up to 11 inches of rain fell between a 6 to 10 hour period causing flash flooding. The heaviest rain was across the far southern portions of Lincoln County. Numerous roads were flooded including Route J south of Troy, Route C west of Old Monroe, and Route MM. Also, a culvert was washed out on Route U between Fred Norton Road and Giles road. Several water rescues were performed. One driver was northbound on Highway J just south of Big Creek in the early morning hours and could not see the flooded roadway in front of her. Before she knew it she was in the water and could not back out of it. The vehicle began to float and fill with water. She called her husband, told him where she was at and asked for him to call 911. She managed to get out of one of her back doors and slip out, grabbing a branch just before her vehicle was completely submerged. It took two and a half hours for the fire rescue to get a boat to the location and rescue her from the tree she was clinging to. She was uninjured. With the other rescues, no one was injured as well.

Flash Flood in ST. CHARLES, MISSOURI
From 26-JUL-22 00:45:00 to 26-JUL-22 11:15:00 (CST-6)
Location: FORISTELL
Flood cause: Heavy Rain
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 13 inches of rain fell in a 6 to 10 hour period causing widespread flash flooding. The axis of heaviest rain extended from just north of Wentzville east southeastward through northern portions of O'Fallon through St. Peters and into St. Charles. Numerous roads were flooded throughout St. Charles County. Interstate 70 was flooded with up to five feet of water around the intersection with Mid Rivers Mall Drive. Fire and rescue searched and cleared several dozen vehicles in this area and rescued 8 people from the rising waters. Also, in the area of Harry S. Truman Blvd and Premier Parkway, several drivers were rescued from their flooded vehicles. In the area of Mexico Road and Spencer Road, multiple vehicles were trapped by rapidly rising waters of Spencer Creek. One vehicle in this area was swept off the roadway into Spencer Creek. The driver escaped but was clinging to a tree in the fast moving water that was over 8 feet deep. He was rescued and was not injured. Between 1 am and 11 am, 87 people were evacuated from homes or businesses in St. Charles County. One hundred seventeen buildings were damaged from the flooding. Forty Nine of them sustained major damage, 46 sustained moderate damage and 22 buildings sustained minor damage. So far damage is estimated to be around $10 million dollars.