Monona County, IA hail & severe wind history
72 storm reports on file for Monona County between 2010-04-06 and 2026-05-17 — 44 hail and 28 severe thunderstorm wind. That averages 4.2 reports a year, and Jun is the busiest month.
At a glance
- Most recent hail report: Mar 6, 2026 — 1.5" (ping pong ball), 1.03 mi W of Blencoe.
- Hail was reported on 30 days since 2010 — about 1.8 hail days a year.
- Largest hail on record: 3.5" (teacup) on Jun 12, 2024.
- Monona County has more hail reports than 32% of the 99 Iowa counties we cover.
Search every Monona County report
Check a single date first, or filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the larger stones (1", quarter size, is the National Weather Service severe threshold).
Loading Monona County storm reports…
Worst storm days in Monona County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2024-06-12 | 3 | 3.5" (teacup) | — |
| 2011-05-12 | 3 | 2.75" (baseball) | — |
| 2011-04-09 | 3 | 1.75" (golf ball) | — |
| 2023-04-19 | 3 | 1.5" (ping pong ball) | — |
| 2011-08-18 | 3 | 1.25" (half dollar) | 60 mph |
| 2012-05-23 | 3 | 1" (quarter) | 63 mph |
| 2011-06-26 | 3 | — | 63 mph |
| 2016-09-15 | 2 | 1.5" (ping pong ball) | — |
| 2016-04-24 | 2 | 1" (quarter) | — |
| 2013-07-08 | 2 | 1" (quarter) | 60 mph |
Reports by year
Report counts are driven partly by how many people were around to report a storm, so recent years tend to look busier than the early 2010s. Treat the trend as a reporting trend, not purely a weather trend.
Notable large-hail events (2" and up)
| Date | Size | Near | What was reported |
|---|---|---|---|
| 2024-06-12 | 2.75" baseball | 0 mi N of Whiting | The office received a photo of significant damage to siding and windows on a home in Whiting, Iowa. This was accompanied by significant car damage and tree damage in the surrounding area. Hail was estimated to have ranged from golf ball to baseball sized. |
| 2024-06-12 | 3.5" teacup | 3 mi W of Onawa | A report from mPING of 3.5 inch hail. |
| 2011-05-12 | 2.75" baseball | 1.02 mi W of Whiting | Hail around baseball-size fell in the Whiting area which caused some vehicle damage. |
| 2011-05-12 | 2.75" baseball | 1.38 mi N of Ticonic | Hail around baseball-size fell near Rodney, from the same storm that produced similar size hail in the Whiting area. The hail caused some vehicle damage in the area. |
When does hail hit Monona County?
Across 17 years of records, June produced the most reports (17), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 0 | 0.0% |
| February | 0 | 0.0% |
| March | 4 | 5.6% |
| April | 11 | 15.3% |
| May | 15 | 20.8% |
| June | 17 | 23.6% |
| July | 12 | 16.7% |
| August | 10 | 13.9% |
| September | 3 | 4.2% |
| October | 0 | 0.0% |
| November | 0 | 0.0% |
| December | 0 | 0.0% |
Neighboring counties
Counties that share a border with Monona County (U.S. Census county adjacency), where we have storm records:
| County | Storm reports | Largest hail |
|---|---|---|
| Woodbury County, IA | 290 | 2.75" |
| Harrison County, IA | 156 | 3" |
| Burt County, NE | 113 | 2.8" |
| Ida County, IA | 105 | 2.5" |
| Crawford County, IA | 101 | 2.75" |
| Thurston County, NE | 70 | 1.75" |
Common questions about hail in Monona County
- How often does it hail in Monona County?
- Hail was reported on 30 separate days between 2010 and 2026, about 1.8 days a year, with June the busiest month for storm reports. 38 reports were quarter size (1") or larger.
- Does a report here mean hail hit my street?
- Not necessarily. Each report is one observation tied to a nearby landmark, and a county can be large. Storms also go unreported where few people live. Use the date check above to see what was reported nearby, and treat it as a starting point.
- How big is a 1.75" hailstone?
- Forecasters describe hail by everyday objects: 1" is a quarter, 1.75" a golf ball, 2.75" a baseball. The sizes in these reports are estimates made by the person reporting, not lab measurements.
- Where do I get the official record?
- All reports here come from the NOAA NCEI Storm Events Database, which you can search directly. For anything formal, use NOAA’s own records rather than this page.
Look up another place
About these numbers
Every row above is a report filed with the National Weather Service and archived in the NOAA NCEI Storm Events Database (FIPS 19133). Reports are eyewitness, trained-spotter and damage-survey observations, so they cluster near roads and towns and miss storms over empty country. Hail sizes are estimates. Damage figures are preliminary as filed and are never revised in this archive. Use this page for background, not for an insurance claim, a legal filing, or a roof assessment — for those, get the official record from NOAA directly.