FloodZoneMap.org

Flash Flood — Allen, IN

Aug 29, 2017

High precipitable water values, combine with a slow moving area of rain and embedded thunderstorms over the Fort Wayne Metro area, caused flooding and flash flooding across mainly the northern portions of Fort Wayne. Three to just under five inches of rain fell within a few hour period, overwhelming drains. Within a few hours of the rain ended, flood waters rapidly receded. Lightning sparked several fires as well.

Source: NOAA National Weather Service Storm Events Database (event 716792). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Allen, IN

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

View Allen County flood data →

More Flood Stories

Flood$7.0M damage

Allen, IN · Jul 5, 2003

Flash flooding and record river flooding occurred over the southern sections of the Northern Indiana County Warning Area starting July 4th and 5th with river flooding abating by July 14th.

Read the full account →
Flood

Allen, IN · Apr 2, 2025

The atmosphere was primed for severe weather during the afternoon and evening hours of April 2nd. 0-1 km SRH values of 300 to 500 m2/s2, 60 to 70 kts of shear and MLCAPE of around 1000 J/KG set the stage for numerous thunderstorms.

Read the full account →
Flash Flood$10K damage

Allen, IN · Jul 18, 2007

Weak, but persistent warm air advection moved into the region extending from eastern Iowa into northern Indiana. Extreme instability developed to the west across Illinois where CAPEs exceeded 5000 j/kg and LI's reached -10 C.

Read the full account →
Flood

Allen, IN · Jul 8, 2020

Another multicell day with short-lived but intense cores due to moderate instability/low shear. Outflow interactions dominated the evolution once again.

Read the full account →