Flash flooding was reported in southern Barry and Stone counties, including Roaring River State Park, after an estimated 6 inches of rain fell early Thursday.
Over the last 48 hours more than 10 inches of rain has fallen near Fort Leonard Wood.
Ten inches of rain fell in a matter of hours flooding a small town near Fort Leonard Wood.
Nixon was heading to St. Charles County on Friday for an aerial look at the high water and the condition of levees.
The National Weather Service says two of the tornadoes were rated EF-3, which means they contained winds measuring 136 to 165 miles per hour.
The storm Friday night produced two tornadoes, one that began in St. Charles County and traveled 32 miles through parts of St. Louis County.
An Illinois man was part of the storm chasing team from which three members were killed by a tornado in Oklahoma.
Most of the outages nearly 35,000 were on the Missouri side of the St. Louis region as of about 1:00 p.m. Monday.
The latest social updates on the severe weather that made its way through the St. Louis area Friday night.