NOAA Storm Events · October 2021
Hail in October 2021: 117 NOAA reports across 19 states
NOAA logged 117 hail reports in October 2021, in 70 counties across 19 states. Oklahoma had the most (26). The largest stone was 3 inches (a teacup), near Norman in Cleveland County, Oklahoma, on October 10, 2021. The worst day was October 5, 2021, with 25 reports in 2 states.
- Where
- 70 counties in 19 states; Oklahoma had 22% of the reports
- Largest stone
- 3 inches, a teacup, in Cleveland County, OK (near Norman), on October 10, 2021
- Worst day
- October 5, 2021: 25 reports in 2 states, 21% of the month
- Days with hail
- 16 of 31 days had at least one report
- under 1 in
- 1 to 1.74 in
- 1.75 to 2.74 in
- 2.75 in and up
Day by day
October 5, 2021 was the worst day with 25 reports. A day with hail averaged 7.
| October 1 | 4 |
|---|---|
| October 2 | 0 |
| October 3 | 0 |
| October 4 | 2 |
| October 5 | 25 |
| October 6 | 2 |
| October 7 | 3 |
| October 8 | 4 |
| October 9 | 8 |
| October 10 | 17 |
| October 11 | 2 |
| October 12 | 15 |
| October 13 | 0 |
| October 14 | 6 |
| October 15 | 5 |
| October 16 | 0 |
| October 17 | 0 |
| October 18 | 0 |
| October 19 | 0 |
| October 20 | 3 |
| October 21 | 0 |
| October 22 | 0 |
| October 23 | 3 |
| October 24 | 9 |
| October 25 | 0 |
| October 26 | 9 |
| October 27 | 0 |
| October 28 | 0 |
| October 29 | 0 |
| October 30 | 0 |
| October 31 | 0 |
Where it hit hardest
Ranked by NOAA hail reports. A report is one spotter or sensor entry for one county and storm, so counts follow where people live as well as where hail fell.
| OK | 26 |
|---|---|
| AZ | 17 |
| KS | 12 |
| SD | 9 |
| MS | 8 |
| AR | 7 |
| IL | 7 |
| TX | 7 |
| MO | 5 |
| OH | 4 |
| # | State | Reports | Share | Largest |
|---|---|---|---|---|
| 1 | Oklahoma | 26 | 22.2% | 3 in |
| 2 | Arizona | 17 | 14.5% | 1.75 in |
| 3 | Kansas | 12 | 10.3% | 1.75 in |
| 4 | South Dakota | 9 | 7.7% | 1.75 in |
| 5 | Mississippi | 8 | 6.8% | 1.75 in |
| 6 | Arkansas | 7 | 6.0% | 1.25 in |
| 7 | Illinois | 7 | 6.0% | 1.75 in |
| 8 | Texas | 7 | 6.0% | 1.75 in |
| 9 | Missouri | 5 | 4.3% | 1.5 in |
| 10 | Ohio | 4 | 3.4% | 1 in |
| # | County | Reports | Largest |
|---|---|---|---|
| 1 | Maricopa County, AZ | 15 | 1.75 in |
| 2 | Cleveland County, OK | 5 | 3 in |
| 3 | Jerauld County, SD | 5 | 1.75 in |
| 4 | McClain County, OK | 5 | 1.75 in |
| 5 | Canadian County, OK | 3 | 2 in |
| 6 | Oklahoma County, OK | 3 | 1.75 in |
| 7 | Sandusky County, OH | 3 | 1 in |
| 8 | Winston County, MS | 3 | 1.25 in |
| 9 | Baxter County, AR | 2 | 1 in |
| 10 | Cheyenne County, NE | 2 | 1.5 in |
County names link to the full hail history where we have published that county. The CSV below lists all 70 counties and all 19 states.
How October 2021 compares
| Compared with | Reports | October 2021 was |
|---|---|---|
| September 2021 | 326 | -209 (-64%) |
| October 2020 | 68 | +49 (+72%) |
| the average October in the other 11 years | 175 | -58 (-33%) |
October 2021 was the 8th busiest October of the 12 in the record and the 105th busiest of all 150 months.
| 2014 | 477 |
|---|---|
| 2015 | 157 |
| 2016 | 208 |
| 2017 | 178 |
| 2018 | 107 |
| 2019 | 153 |
| 2020 | 68 |
| 2021 | 117 |
| 2022 | 169 |
| 2023 | 213 |
| 2024 | 93 |
| 2025 | 99 |
Every October in the record, 2014 to 2025. Months after June 2026 are not in NOAA's file yet.
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Download the data
Source: NOAA NCEI Storm Events Database, hail rows at county level, data through June 2026. Reports are preliminary and unverified: they show that hail was reported in a county, not that a given roof was damaged. Method: how we count. More: State of Hail by year · county hail history · press.
Source: NOAA Storm Events Database, public domain. Counts and tables on this page are free to reuse with credit to PickARoofer under CC BY 4.0.