Hail History

Hail history for Atlantic, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Atlantic since 1971, with preliminary reports to November 3, 2026.

Readout · Atlantic

Last hail
Sep 6, 2026
1.00 in, quarter size · preliminary
Hail days, last 5 years
2
since Nov 3, 2021 · 2 reports
Largest ever
3.00 in
teacup · May 13, 2001

45 reports on 33 days since 1971 · #35 of 483 Iowa places

Hail map · Atlantic

Atlantic Marne Lewis Griswold Walnut Anita Massena 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
45 most recent reports with a location; Cass County is shaded. Open street map

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What the record says about Atlantic

The latest hail report in and around Atlantic is from September 6, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.00 in on September 6, 2026.

Over the 20 years 2006–2025, Atlantic logged 13 reports on 12 hail days, about 0.7 reports a year. That is 44% more than the median Iowa town on this site (0.5 a year) and ranks #35 of 483 Iowa cities and towns on this site for all-time reports. Atlantic accounts for 26% of the 175 reports filed in Cass County.

7% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Iowa town on this site. The largest hail on record here is 3.00 in (teacup) on May 13, 2001 near Atlantic.

Reports were down 70% in 2016–2025 (3) compared with 2006–2015 (10). The busiest year was 2001, with 9 reports on 4 days. Hail here peaks in May (36% of reports); 78% fall between April and June.

Reports a year 2006–2025 average

  • Atlantic 0.7
  • Cass County 3.1
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Atlantic 12
  • Cass County 42
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Atlantic 7%
  • Cass County 13%
  • Median Iowa town on this site 6%

Hail over time

0369 1971: 1 reports, largest 1.00 in 1980: 1 reports, largest 2.75 in 1980 1983: 1 reports, largest 1.75 in 1984: 3 reports, largest 1.75 in 1985: 1 reports, largest 1.75 in 1990 1992: 1 reports, largest 2.50 in 1999: 2 reports, largest 1.75 in 2000: 4 reports, largest 1.75 in 2000 2001: 9 reports, largest 3.00 in 2002: 1 reports, largest 1.75 in 2003: 1 reports, largest 0.88 in 2004: 2 reports, largest 1.75 in 2005: 4 reports, largest 1.00 in 2006: 2 reports, largest 0.75 in 2007: 4 reports, largest 1.25 in 2008: 3 reports, largest 1.00 in 2009: 1 reports, largest 0.75 in 2010 2017: 1 reports, largest 1.00 in 2020 2021: 1 reports, largest 1.25 in 2022: 1 reports, largest 0.75 in 2026: 1 reports, largest 1.00 in
Reports per year, 1971–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
05101520 Jan Feb Mar April: 9 reports (20%) Apr May: 16 reports (36%) May June: 10 reports (22%) Jun July: 4 reports (9%) Jul August: 4 reports (9%) Aug September: 2 reports (4%) Sep Oct Nov Dec
All 45 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 1 1
2025 0
2024 0
2023 0
2022 1 1
2021 1 1
2020 0
2019 0
2018 0
2017 1 1

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Sep 6, 2026 1 1.00 in View
Jun 14, 2022 1 0.75 in —

Largest hail on record

Largest hail reports in Atlantic
Date Size Location County Damage Time · source
May 13, 2001 3.00 inteacup Atlantic Cass $75K 08:02 local · NCEI
Jun 6, 1980 2.75 inbaseball — Cass — 07:32 local · NCEI
Jul 18, 1992 2.50 intennis ball — Cass — 23:45 local · NCEI
Aug 1, 2004 1.75 ingolf ball Atlantic Cass $15K 13:03 local · NCEI
Aug 20, 2002 1.75 ingolf ball Atlantic Cass $25K 10:11 local · NCEI

Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.

Size of every report

Most recent reports

Most recent hail reports in Atlantic
Date Size Location County Damage Time · source
Sep 6, 2026 1.00 inquarter 2 N Atlantic Cass — 20:31 UTC · NWS prelim.
Jun 14, 2022 0.75 inpenny 0.69 N Atlantic Cass — 21:34 local · NCEI
Jun 18, 2021 1.25 inhalf dollar 1.25 ENE Atlantic Cass — 22:32 local · NCEI
May 8, 2017 1.00 inquarter 1.04 E Atlantic Cass — 01:40 local · NCEI
Jun 19, 2009 0.75 inpenny 3.4 WNW Wiota Cass — 04:05 local · NCEI
Sep 23, 2008 1.00 inquarter 0.52 E Atlantic Cass $2K 15:40 local · NCEI
Apr 22, 2008 1.00 inquarter 1.25 ENE Atlantic Cass $3K 00:26 local · NCEI
Apr 22, 2008 1.00 inquarter 0.52 E Atlantic Cass $3K 00:20 local · NCEI
Jun 21, 2007 0.88 innickel 0.52 E Atlantic Cass $2K 15:00 local · NCEI
May 23, 2007 1.25 inhalf dollar 2.08 N Fletcher Chapel Cass $10K 14:28 local · NCEI
May 6, 2007 0.75 inpenny 2.08 N Fletcher Chapel Cass — 01:54 local · NCEI
Apr 3, 2007 0.88 innickel 2.14 NNW Fletcher Chapel Cass $1K 00:50 local · NCEI

Hail history near Atlantic

Questions about hail in Atlantic

How often does it hail in Atlantic, Iowa?

45 hail reports have been logged in and within about 5 km (3 miles) of Atlantic since 1971. Over the 20 years 2006–2025 that averages 0.7 reports a year. That ranks #35 of 483 Iowa places by number of reports.

When is hail season in Atlantic?

Most reports come in May, June, April. May alone accounts for 36% of all reports.

What is the largest hail recorded in Atlantic?

3.00 in (teacup size) on May 13, 2001 near Atlantic. 7% of reports here were 2 inches or larger.

When did it last hail in Atlantic?

The most recent report in this data is from September 6, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Atlantic had in the last five years?

2 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was September 6, 2026.

Where does this hail data come from?

Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.