Hail history for Copan, Oklahoma
NOAA hail reports in and within about 5 km (3 miles) of Copan since 1983, with preliminary reports to November 3, 2026.
Readout · Copan
- Last hail
- Jun 17, 2025
- 1.75 in, golf ball size
- Hail days, last 5 years
- 2
- since Nov 3, 2021 · 2 reports
- Largest ever
- 4.50 in
- softball · May 14, 1986
39 reports on 37 days since 1983 · #148 of 584 Oklahoma places
Hail map · Copan
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Copan
The latest hail report in and around Copan is from June 17, 2025, 1.75 in (golf ball size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.75 in on June 17, 2025.
Over the 20 years 2006–2025, Copan logged 16 reports on 16 hail days, about 0.8 reports a year. That is 78% more than the median Oklahoma town on this site (0.5 a year) and ranks #148 of 584 Oklahoma cities and towns on this site for all-time reports. Copan accounts for 14% of the 286 reports filed in Washington County.
5% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Oklahoma town on this site. The largest hail on record here is 4.50 in (softball) on May 14, 1986.
Reports were down 40% in 2016–2025 (6) compared with 2006–2015 (10). The busiest year was 2009, with 3 reports on 3 days. Hail here peaks in May (36% of reports); 74% fall between April and June.
Reports a year 2006–2025 average
- Copan 0.8
- Washington County 5.8
- Median Oklahoma town on this site 0.5
Hail days 2006–2025
- Copan 16
- Washington County 70
- Median Oklahoma town on this site 8
Share 2 in or larger of sized reports
- Copan 5%
- Washington County 4%
- Median Oklahoma town on this site 8%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 1 | 1 | 2 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 17, 2025 | 1 | 1.75 in | — |
| May 17, 2025 | 1 | 0.75 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 14, 1986 | 4.50 insoftball | — | Washington | — | 11:48 local · NCEI |
| May 4, 2003 | 4.25 ingrapefruit | 5 E Miami | Ottawa | — | 17:05 local · NCEI |
| Jun 17, 2025 | 1.75 ingolf ball | 1.01 W Copan | Washington | $20K | 20:27 local · NCEI |
| Nov 24, 2020 | 1.75 ingolf ball | 0.2 E Copan | Washington | $25K | 19:35 local · NCEI |
| Oct 1, 2014 | 1.75 ingolf ball | 0.35 ESE Copan | Washington | $10K | 13:45 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
- Under 1 in 15 38%
- 1–2 in 22 56%
- 2 in + 2 5%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jun 17, 2025 | 1.75 ingolf ball | 1.01 W Copan | Washington | $20K | 20:27 local · NCEI |
| May 17, 2025 | 0.75 inpenny | 3 NW Copan | Washington | — | 23:24 local · NCEI |
| Nov 24, 2020 | 1.75 ingolf ball | 0.2 E Copan | Washington | $25K | 19:35 local · NCEI |
| Feb 28, 2017 | 1.00 inquarter | 3 N Copan | Washington | — | 23:10 local · NCEI |
| Apr 10, 2016 | 1.00 inquarter | 3 NE Copan | Washington | — | 18:59 local · NCEI |
| Mar 30, 2016 | 1.00 inquarter | 0.37 SE Copan | Washington | — | 16:30 local · NCEI |
| Apr 2, 2015 | 1.00 inquarter | 0.31 SE Copan | Washington | — | 19:24 local · NCEI |
| Oct 1, 2014 | 1.75 ingolf ball | 0.35 ESE Copan | Washington | $10K | 13:45 local · NCEI |
| Jun 18, 2011 | 1.75 ingolf ball | 2 NW Copan | Washington | $10K | 20:10 local · NCEI |
| Apr 24, 2011 | 0.88 innickel | Copan | Washington | — | 19:00 local · NCEI |
| Aug 10, 2009 | 0.88 innickel | Copan | Washington | — | 15:12 local · NCEI |
| May 1, 2009 | 1.00 inquarter | 2 N Copan | Washington | — | 12:04 local · NCEI |
Hail history near Copan
- Wann 11 km · 13
- Dewey 12 km · 19
- Bartlesville 18 km · 128
- Lenapah 26 km · 14
- South Coffeyville 29 km · 16
- Delaware 29 km · 10
- Ochelata 33 km · 35
- Nowata 34 km · 37
Questions about hail in Copan
How often does it hail in Copan, Oklahoma?
39 hail reports have been logged in and within about 5 km (3 miles) of Copan since 1983. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #148 of 584 Oklahoma places by number of reports.
When is hail season in Copan?
Most reports come in May, April, June. May alone accounts for 36% of all reports.
What is the largest hail recorded in Copan?
4.50 in (softball size) on May 14, 1986. 5% of reports here were 2 inches or larger.
When did it last hail in Copan?
The most recent report in this data is from June 17, 2025 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Copan 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 June 17, 2025.
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.