FloodZoneMap.org

Flash Flood — Allamakee, IA

Sep 12, 2019

A line of thunderstorms moved across northeast Iowa during the afternoon of September 12th. These storms produced a weak tornado in the vicinity of Ossian (Winneshiek County) that damaged some farm buildings and numerous trees. A second tornado occurred northwest of Farmersburg (Clayton County). The damage from this tornado was limited to a few trees, some outbuildings and one home had branches impaled through a wall. In Marquette and McGregor (Clayton County) runoff from the heavy rains turned

Source: NOAA National Weather Service Storm Events Database (event 856797). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Allamakee, IA

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

View Allamakee County flood data →

More Flood Stories

Flood1 death$25K damage

Allamakee, IA · Aug 19, 2007

A nearly stationary front across the region was the focus for thunderstorms across northeast Iowa during the late afternoon and evening of August 19. Excessive rainfall amounts of 2 to 5 inches in two to three hours caused flash flooding.

Read the full account →
Flash Flood$2.0M damage

Allamakee, IA · Jun 7, 2008

A warm front extended east to west across the Upper Mississippi Valley on June 7, which provided the focus for thunderstorms producing excessive rainfall. In fact, these storms exhibited very high rainfall rates, which led to 1 to 2 inch rainfall amounts in an hour.

Read the full account →
Flood$35K damage

Allamakee, IA · Jun 24, 2024

Above normal rainfall over the course of June, combined with a robust rainfall event between June 20th and 22nd, led to widespread river flooding across portions of northeast Iowa.

Read the full account →
Flood$25K damage

Allamakee, IA · Jun 24, 2024

Above normal rainfall over the course of June, combined with a robust rainfall event between June 20th and 22nd, led to widespread river flooding across portions of northeast Iowa.

Read the full account →