Tornadoes, hail, floods and severe storms recorded here between 1955 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
The part of each tornado’s path NOAA recorded in this county, 68 in all. Zoom in and the paths widen to their surveyed width.
Hover or tap a bar to see that year.
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
September 28, 1986 · Polk, Iowa
June 18, 1974 · Polk, Iowa
Tornado F4 Tornado2 deaths, 50 injuries, $25.0M damage June 30, 2018 · Polk, Iowa
Emergency manager reported multiple water rescues across Ankeny, Johnston, Des Moines and Urbandale. Vehicles were stalled out in street flooding with water half way up the doors of some cars.
June 11, 2016 · Polk, Iowa
A 6 month old boy was left in an attended vehicle outside a business while the father was inside the business. The high at KDSM was 91 degrees that afternoon with the highest heat index of 97.
June 17, 2014 · Polk, Iowa
Thunderstorm winds blew down a large tree branch. A homeless individual died when a the branch fell on him at a homeless settlement along the banks of the Raccoon River east of Fluer Blvd.
August 11, 2010 · Polk, Iowa
Water rescue in progress regarding three vehicles with a total of 11 people near NE 8th Ave and NE 54th Ave. There was one fatality, 10 rescues and several injuries.
January 16, 2009 · Polk, Iowa
July 17, 2006 · Polk, Iowa
August 5, 2001 · Polk, Iowa
January 1, 1999 · Polk, Iowa
February 19, 1997 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
March 13, 1990 · Polk, Iowa
May 21, 2024 · Polk, Iowa
This was a long track tornado which started just to the southwest of the Johnston High School with fascia and soffit damage to houses along Catalina Drive. The tornado blew windows out of the high school and continued to produce tree and minor roof damage through the Ashton Point…
April 26, 2024 · Polk, Iowa
This tornado developed within the east side of the Des Moines Metro area just northwest of Easter Lake. Initial damage reports include damage to trees and fences and then eventually roof damage as the tornado progressed to the northeast. The tornado passed just to the southeast o…
March 5, 2022 · Polk, Iowa
This tornado passed from Warren county into Polk county near the intersection of Highway 69 and County Line Road. The tornado crossed E Pine Avenue removing the roof of a house and then clipped the north edge of Avon producing EF2 damage to a couple of houses. The tornado then cr…
June 30, 2018 · Polk, Iowa
Fourmile Creek at Easton Blvd crested at 17.47 feet on 1 July 2018 at 1030Z.
June 30, 2018 · Polk, Iowa
Walnut Creek at Des Moines 63rd Street crested at 17.37 feet on 1 July 2018 at 1130Z.
December 20, 2012 · Polk, Iowa
June 14, 2008 · Polk, Iowa
June 10, 2008 · Polk, Iowa
June 1, 2008 · Polk, Iowa
August 1, 2003 · Polk, Iowa
August 22, 2002 · Polk, Iowa
June 12, 2001 · Polk, Iowa
November 10, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 29, 1998 · Polk, Iowa
June 18, 1998 · Polk, Iowa
October 26, 1997 · Polk, Iowa
June 29, 1986 · Polk, Iowa
October 14, 1966 · Polk, Iowa
February 19, 2026 · Polk, Iowa
July 30, 2025 · Polk, Iowa
Large hardwood tree uprooted and fell on home. Delayed Report. Time estimated from radar.
July 28, 2025 · Polk, Iowa
Large tree branches down in Urbandale due to collapsing storm.
July 24, 2025 · Polk, Iowa
Peak wind gust from the RWIS mesonet station RAKI4 Ankeny.
July 24, 2025 · Polk, Iowa
Several large tree limbs down in town and small trees less than 6 inches in diameter. Some shingle damage. A microburst occurred over the northwest side of town.
July 20, 2025 · Polk, Iowa
Local law enforcement reported flash flooding over portions of the Des Moines metro area on the evening of July 20th 2025. Several intersections closed along 63rd Ave, with several stranded vehicles. George Flagg Parkways closed, with flooding reported in the Valley Junction area…
July 11, 2025 · Polk, Iowa
Ankeny airport reported a 52 kt gust.
July 11, 2025 · Polk, Iowa
Trained spotter reported an estimated wind gust of 70 mph.
July 11, 2025 · Polk, Iowa
Social media report of a wind gust measured at 67 mph.
July 10, 2025 · Polk, Iowa
Mature tree snapped in Ewing Park. Time estimated from radar.
July 10, 2025 · Polk, Iowa
Measured wind gust reported by local broadcast media.
July 10, 2025 · Polk, Iowa
Des Moines airport reported a wind gust of 74 mph.