Warren storm history

High temperatures in the upper 90s combined with high humidity to produce heat index values over 105 degrees for several days. The heat index peaked near 110 degrees.

Hot and extremely humid conditions led to heat index values over 105 degrees for a week. The heat index values peaked around 112 degrees.

The Warren County emergency manager reported golf ball sized hail at Marthasville.

A member of the public measured 1.32 inches having fallen 1 mile southwest of Warrenton just before reports of flooding started coming in. All reports came from the emergency manager and all locations listed typically flood when heavy rain falls. Spots include: Highway O at Walnu…

The storm began early on the 5th, with primarily sleet and snow falling through the morning. After a brief break in the afternoon, more snow fell in the evening. A total of 6 to 11 inches of snow and sleet fell across the county. As much as 1 inch of this fell in the form of slee…

Thunderstorm winds knocked a powerline and a tree down along Powerline Road between Missouri Highway A and Missouri Route 47.

Thunderstorm winds snapped a weak tree at its base at Coorperative Way just south of I-70.

A trained spotter reported tree damage across Highway A with lots of debris.

Widespread large hail up to three inches in diameter fell across the southern half of Warren County, including the following towns: Pendelton, Warrenton, Truesdale, Innsbrook and Wright City.

A swath of damaging winds extended from 3 miles west of Warrenton through the town of Warrenton. Numerous large trees were snapped off, as well as numerous tree limbs. Also, the roof of a mobile home was torn off and one house sustained roof damage when a tree limb speared a hole…

Thunderstorm winds snapped off several large tree limbs and blew down a tree that was a foot in diameter across the road.

A brief period of heavy snow brought 4 to 6 inches of snowfall. Snowfall rates exceeded 1 inch per hour and led to hazardous driving conditions. Numerous vehicle accidents were reported. Interstate 70 was shut down for several hours due to a multi-vehicle pile up near Warrenton.

Wind chill values dropped to as low as 32 below zero with the coldest values during the nighttime hours.

An intensifying discrete thunderstorm produced quarter sized hail along I-70 in Warren County. This storm went on to produce up to golf ball sized hail just after crossing the border into St. Charles County.

One cell amidst a group of disorganized convection produced wind gusts strong enough to bring down multiple power poles along I-70 very near the Montgomery and Warren county line.

A period of very hot and extremely humid weather began on Sunday, August 20 and lasted through Friday, August 25. The combination of heat and humidity led to heat index values of 115 to 120 as observed at numerous reporting sites in the region.

Thunderstorm winds blew a tree down onto a bridge that crosses Bear Creek, about 4 miles south southwest of High Hill. About 4 miles northeast of Jonesburg, a tree fell onto an occupied car causing moderate injuries to the occupant.

Thunderstorm winds blew down numerous trees and power lines along a stretch of Highway 47 between Warrenton and the Warren/Lincoln County line south of Hawk Point.

Thunderstorm winds blew a tree onto power lines at Highway EE and Wild Flower Lane.

Thunderstorm winds blew down power lines in Marthasville as well as a couple of trees and numerous tree limbs. In Dutzow, numerous trees and power lines were blown down.

A wide swath of large hail from about 3 miles north of Warrenton to about 3 miles north of Wright City.

Between 1 and 2 inches of snow fell. The snow combined with gusty northwest winds (35-45 mph gusts) created extremely hazardous travel with sporadic near-blizzard conditions during the heaviest snowfall. Road conditions deteriorated rapidly during this event.

Thunderstorm winds blew down several large trees onto Highway 94 just west of Marthasville.

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…

Thunderstorm winds blew down several trees as well as numerous tree limbs around town. Also, several fences were damaged.

There were two rounds of snow with this system. Snowfall ranged from 8 to 10 inches.

Thunderstorm winds peeled off a portion of a flat roof on Daniel Boone Elementary School in the Warren County R-III School District.

Thunderstorm winds blew down several power lines between Hopewell and Marthasville.

A swath of wind damage across portions of Warren County. Several manufactured homes sustained minor damage to underpinning, tie downs and supports, about 3 miles north northeast of Warrenton. In Warrenton, a large sign near a shopping center was damaged. Several trees were blown …

Up to four inches of rain fell in about a 6 hour period causing flash flooding. Several roads were flooded including the intersection of Highway B and West Veterans Memorial Parkway.

Up to five inches of rain fell in a short amount of time causing flash flooding. Numerous roads were flooded including the intersection of Highway U and Booneslick Road, at the intersection of Highway B and Veterans Memorial Parkway and on State Highway 47 at Willow Road. A swift…

Thunderstorm winds destroyed an old pole barn on the south side of I-70, between Warrenton and Wright City.

Several rounds of snow beginning the evening of February 14th. The last round of accumulating snow exited Warren County by 8 pm on February 15th. Overall, snowfall amounts ranged from 6 to 8 inches.

Up to four inches of rain fell in about a two and a half hour time period causing flash flooding. Several roads were flooded in and around the Wright City area, including the intersection of State Highways M and H. One road, Roelker Road south of intersection with Appaloosa Way, …

Up to four inches of rain fell in a short amount of time causing flash flooding across the southern portions of Warren County. In Treloar, several roads were flooded as well as a couple of basements. Also, Highway N was closed due to high water and several roads in the Concord Hi…