NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Dunlap, IA
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Dunlap, Iowa since records began in 1851. Since 1950, 110 tornadoes have touched down within 25 miles, 9 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 110
- EF3 or stronger
- 9
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
7 deaths in all
What the records show for Dunlap
The highest rating among the 110 tornadoes within 25 miles is F3 or EF3, reached 9 times; the most recent, on April 26, 2024, came within 25 miles. The deadliest, an EF3 on June 11, 2008, killed 4 people. Of the 110, one had a path within 5 miles of the city centre, and 50 have come since 2000. May has had the most tornadoes, 32. The most recent tornado was on May 24, 2024. Of the 241 Iowa cities on this site, 73% have more tornadoes within 25 miles than Dunlap. Hail has been reported within 10 miles 46 times since 1962, with stones up to 2.5 inches (tennis ball size). Of the 241 Iowa cities, 93% have more hail reports within 10 miles than Dunlap.
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Tornadoes within 25 miles of Dunlap
By decade
- 2020s19(2 EF3+)
- 2010s12(1 EF3+)
- 2000s19(1 EF3+)
- 1990s26(4 EF3+)
- 1980s13
- 1970s6
- 1960s11(1 EF3+)
- 1950s4
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 11, 2008 | EF3 | 14 mi | 12.96 mi | 4 / 48 |
| May 16, 1999 | F3 | 15 mi | 7.5 mi | 2 / 16 |
| Apr 26, 2024 | EF3 | 14 mi | 40.27 mi | 1 / 3 |
| Apr 26, 2024 | EF3 | 25 mi | 19.06 mi | 0 / 0 |
| Apr 9, 2011 | EF3 | 23 mi | 3.38 mi | 0 / 14 |
| May 16, 1999 | F3 | 18 mi | 6.2 mi | 0 / 0 |
| Jun 16, 1992 | F3 | in town | 26 mi | 0 / 3 |
| Apr 26, 1991 | F3 | 18 mi | 7.7 mi | 0 / 0 |
| Jul 26, 1969 | F3 | 16 mi | 22.5 mi | 0 / 0 |
| Apr 26, 2024 | EF2 | 18 mi | 9.26 mi | 0 / 0 |
| Jul 12, 2023 | EF2 | 20 mi | 9.4 mi | 0 / 0 |
| Mar 23, 2009 | EF2 | 20 mi | 8.6 mi | 0 / 0 |
The strongest 12 of 110, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Dunlap
The Storm Prediction Center has 46 hail reports within 10 miles of Dunlap since 1962, made on 36 separate days. Of these, 31 were 1 inch across or larger, and 3 reached 2 inches. The largest, 2.5 inches (tennis ball size), fell on August 6, 2011. The most recent report is from September 22, 2025. May has the most reports, 16.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Dunlap
The nearest NOAA station with 1991–2020 climate normals is Logan, IA, 18 miles southwest of Dunlap at 990 feet. July is the warmest, with an average high of 86°F and low of 64°F; January is the coolest, at 31°F and 10°F. June is the wettest at 5.2 inches of precipitation on average and January the driest at 0.7 inches; the year adds up to 34.5 inches over 60 days with at least a tenth of an inch. Highs reach 90°F on about 24 days a year, almost all from May to September. Lows fall below freezing on about 154 nights a year. Snowfall averages 28.7 inches a year, most of it in January. That 34.5 inches is more than at 29 of the 124 Iowa stations used on this site (23%). Denison, 18 miles northeast, has its own station (Denison, IA): 33.6 inches a year, 0.9 less than here, and a July average high of 83°F against 86°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 31 | 10 | 0.7 | 2 | 7.9 |
| Feb | 36 | 14 | 1.0 | 3 | 6.4 |
| Mar | 49 | 26 | 1.8 | 5 | 4.1 |
| Apr | 62 | 36 | 3.4 | 7 | 0.9 |
| May | 73 | 49 | 5.0 | 8 | 0.0 |
| Jun | 82 | 60 | 5.2 | 7 | 0.0 |
| Jul | 86 | 64 | 4.1 | 6 | 0.0 |
| Aug | 84 | 61 | 4.3 | 6 | 0.0 |
| Sep | 78 | 51 | 3.5 | 5 | 0.0 |
| Oct | 65 | 38 | 2.6 | 5 | 0.6 |
| Nov | 49 | 25 | 1.5 | 3 | 2.2 |
| Dec | 35 | 15 | 1.4 | 3 | 6.6 |
| Year | 61 | 38 | 34.5 | 60 | 28.7 |
Averages for 1991–2020 at Logan, IA (990 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Dunlap
Since 1996, the National Weather Service has logged 38 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Dunlap: 28 thunderstorm wind reports, 4 flash floods, 4 floods and 2 heavy rain events. None is recorded as killing or injuring anyone; the NWS estimated $2.7 million in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on June 16, 2017.
March 13, 2019: flood 3 miles from the centre of Dunlap — $2.2 million damage.
NWS: “Thiere was for flooding along the Boyer River. 33 feet at 7 pm on March 13th.”
July 14, 2010: thunderstorm wind 9 miles from the centre of Dunlap — $210,000 damage.
NWS: “Winds estimated over 60 MPH bent crops over at a 45 degree angle along highway 30 just northeast of Dow City.”
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Harrison County, which includes Dunlap, has been named in 24 federal disaster or emergency declarations since 1965, 21 of them major disasters (by incident: 9 floods, 9 severe storms, 2 biological emergencies, 1 hurricane). The latest major disaster declaration was Severe Winter Storm, on May 21, 2025. FEMA's National Risk Index gives Harrison County a Very Low rating for natural hazard risk overall; by hazard: Relatively Moderate for hail and strong wind; Relatively Low for tornadoes and inland flooding; Very Low for lightning and heat waves. It models the county's expected loss from all 18 hazards it covers at $9.8 million a year, the 78th highest of 99 Iowa counties; of the hazards above, the largest share, $4.2 million (43%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Dunlap
- Woodbine, IA9 mi
- Logan, IA17 mi
- Denison, IA18 mi
- Harlan, IA22 mi
- Missouri Valley, IA25 mi
- Onawa, IA28 mi
- Manning, IA28 mi
- Tekamah, NE31 mi
- Ida Grove, IA34 mi
- Fort Calhoun, NE34 mi
- Blair, NE35 mi
- Audubon, IA36 mi
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