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Higher than average rainfall
The Mississippi River Basin (in which more than half of the Continental United States feeds into the Mississippi River via smaller rivers and tributaries), begins seeing higher than average rainfall. According to the National Oceanic Atmospheric Administration (NOAA), rainfall in April 1993 hits 4 inches, one full inch above the average. -
5 inches of rainfall in May
Rainfall in the Mississippi River Basin hits 5 inches for the month (average: below 4 inches). -
7 inches of rainfall in June
Rainfall in the Mississippi River Basin hits 7 inches for the month (average: 4 inches). -
Boat navigation closed
The U.S. Coast Guard closes boat navigation on the Mississippi and Missouri rivers for the St. Louis region in early July. -
Rain falls 20 days or more in July
Rain falls 20 days or more in many Midwestern states, compared to the average of 8 or 9 days, according to the NOAA. -
7 inches of rain in July
The Mississippi River Basin records nearly 7 inches of rain for the month (average: 4 inches). -
Mississippi River crests
Mississippi River crests at St. Louis on July 12 at about 43 feet. -
Levees near Kaskaskia, Illinois fail
Levees near Kaskaskia, Illinois fail on July 22, forcing the entire town to evacuate. -
The Missouri River crests at Kansas City
The Missouri River crests at Kansas City at 48.87 feet on July 27. -
Mississippi River at St. Louis crests
On August 1, the Mississippi River at St. Louis crests at 49.58 feet, setting a new flood stage record. Other flood stage records would be set this day in Winfield, Missouri (39.6 feet), Alton, Illinois (42.72 feet) and Grafton, Illinois (38.17 feet). -
Levees break near Columbia, Illinois
Levees break near Columbia, Illinois on August 1, flooding the towns of Valmeyer and Fults. -
7 inches of rainfall in August
Rainfall in the Mississippi River Basin nearly tops 7 inches for the month (average: below 4 inches).
