FloodZoneMap.org

Flash Flood — Mercer, KY

Jul 1, 2021

Early on July 1st, there was a moist unstable air mass over southern Indiana and central Kentucky. Farther north in Indiana, a west to east oriented cold front was working its way south. This resulted in heavy rainfall and area flash flooding over central Kentucky as the front moved through the region. A Flash Flood Watch was in place before the event.

Source: NOAA National Weather Service Storm Events Database (event 970382). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Mercer, KY

This event is one of many recorded floods in Mercer County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Mercer County flood data →

More Flood Stories

Flood$400K damage

Mercer, KY · Mar 2, 1997

Record to near record rainfall from early March 1 through March 2 caused the highest flooding on the Kentucky River at Frankfort since 1937 with the river cresting at 45.2 feet at 1 pm est March 3 (flood stage is 31 feet).

Read the full account →
Flash Flood

Mercer, KY · Apr 4, 2025

On the night of April 2nd, 2025, a cold front approached the lower Ohio Valley. Along and ahead of the cold front, numerous supercells developed over southern Illinois and western Kentucky.

Read the full account →
Flood$100K damage

Mercer, KY · May 2, 2010

A stalled cold front over the Mississippi Valley spawned thunderstorms producing heavy rain from northern Mississippi through middle Tennessee and central Kentucky into southern Indiana.

Read the full account →
Flash Flood

Mercer, KY · Aug 7, 2013

Scattered thunderstorms developed during the late evening on August 7th, centered over the Kentucky Bluegrass Region. The slow movement of these storms, coupled with a tropical environment in which precipitable water values exceeded 2 inches, led to several very localized…

Read the full account →