HailEvidence NWS storm records · per-address verification

HailEvidencehail history → Monona, IA

Monona, IA hail history

Every figure below is from the NOAA NCEI Storm Events Database — the official NWS record — counting events recorded within 10 miles of the Monona city centroid, 1950 to present.

39hail events since 1950
18≥ 1.00" (quarter) or larger
2.00"largest on record · 1978-08-18
2022-06-28most recent hail event

Hail by year — last 15 years

YearHail events ≤ 10 miLargest hail
2026 0
2025 0
2024 0
2023 0
2022 2 0.88" (nickel)
2021 0
2020 2 1.00" (quarter)
2019 0
2018 1 0.88" (nickel)
2017 2 1.25" (half dollar)
2016 0
2015 0
2014 0
2013 0
2012 1 1.00" (quarter)

Note: the current and prior year reflect the latest NCEI compile and grow as NWS finalizes reports; same-day activity appears on this site's storm-day pages before it reaches this table.

Wind and tornado record

Most recent recorded events

DateTypeMagnitudeDistance
2024-06-12 Thunderstorm Wind 69 mph 3.1 mi
2024-06-12 Thunderstorm Wind 59 mph 9.3 mi
2024-06-12 Thunderstorm Wind 58 mph 9.9 mi
2024-06-12 Thunderstorm Wind 69 mph 6.6 mi
2024-05-21 Thunderstorm Wind 66 mph 0.1 mi
2022-06-28 Hail 0.88" 6 mi
2022-06-28 Hail 0.75" 6.5 mi
2021-08-27 Thunderstorm Wind 52 mph 0.1 mi
2021-08-27 Thunderstorm Wind 58 mph 9.3 mi
2020-07-09 Thunderstorm Wind 40 mph 9.4 mi

2024-06-12: “Reports of trees and power lines down across northern Clayton County were relayed by law enforcement.”

2024-06-12: “A 59 mph gust was measured near Postville.”

2024-06-12: “Trees were reported down in the Yellow River area. Large amounts of dust and dirt were kicked up as well.”

Disputing a claim at a Monona address?

This page covers the city. A claim dispute needs the record around your address: every NWS-recorded event within 1, 3 and 10 miles, the disputed date highlighted, citations formatted for an insurance appeal.

Verify an address — $29
NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure.

source: NOAA NCEI Storm Events computed 2026-06-12