NOAA Storm Events · August 2018
Hail in August 2018: 863 NOAA reports across 39 states
NOAA logged 863 hail reports in August 2018, in 373 counties across 39 states. Colorado had the most (122). The largest stone was 4.25 inches (a grapefruit), near Grant in Perkins County, Nebraska, on August 6, 2018. The worst day was August 6, 2018, with 108 reports in 14 states.
- Where
- 373 counties in 39 states; Colorado had 14% of the reports
- Largest stone
- 4.25 inches, a grapefruit, in Perkins County, NE (near Grant), on August 6, 2018
- Worst day
- August 6, 2018: 108 reports in 14 states, 13% of the month
- Days with hail
- 31 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
August 6, 2018 was the worst day with 108 reports. A day with hail averaged 28.
| August 1 | 34 |
|---|---|
| August 2 | 9 |
| August 3 | 45 |
| August 4 | 14 |
| August 5 | 28 |
| August 6 | 108 |
| August 7 | 48 |
| August 8 | 30 |
| August 9 | 20 |
| August 10 | 13 |
| August 11 | 14 |
| August 12 | 15 |
| August 13 | 26 |
| August 14 | 39 |
| August 15 | 20 |
| August 16 | 41 |
| August 17 | 24 |
| August 18 | 23 |
| August 19 | 11 |
| August 20 | 5 |
| August 21 | 2 |
| August 22 | 16 |
| August 23 | 31 |
| August 24 | 12 |
| August 25 | 15 |
| August 26 | 43 |
| August 27 | 34 |
| August 28 | 68 |
| August 29 | 7 |
| August 30 | 4 |
| August 31 | 64 |
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.
| CO | 122 |
|---|---|
| SD | 94 |
| NE | 83 |
| IA | 73 |
| MN | 69 |
| KS | 48 |
| ND | 39 |
| WI | 36 |
| WY | 32 |
| VA | 31 |
| # | State | Reports | Share | Largest |
|---|---|---|---|---|
| 1 | Colorado | 122 | 14.1% | 4 in |
| 2 | South Dakota | 94 | 10.9% | 4 in |
| 3 | Nebraska | 83 | 9.6% | 4.25 in |
| 4 | Iowa | 73 | 8.5% | 3 in |
| 5 | Minnesota | 69 | 8.0% | 3.25 in |
| 6 | Kansas | 48 | 5.6% | 2 in |
| 7 | North Dakota | 39 | 4.5% | 2.5 in |
| 8 | Wisconsin | 36 | 4.2% | 2 in |
| 9 | Wyoming | 32 | 3.7% | 2.5 in |
| 10 | Virginia | 31 | 3.6% | 1.75 in |
| # | County | Reports | Largest |
|---|---|---|---|
| 1 | El Paso County, CO | 54 | 4 in |
| 2 | Laramie County, WY | 22 | 2.5 in |
| 3 | Pennington County, SD | 16 | 1.75 in |
| 4 | Minnehaha County, SD | 15 | 1.75 in |
| 5 | Cass County, ND | 10 | 2.5 in |
| 6 | Weld County, CO | 10 | 2.75 in |
| 7 | Aitkin County, MN | 9 | 3.25 in |
| 8 | Colfax County, NM | 9 | 2.25 in |
| 9 | Hennepin County, MN | 9 | 1 in |
| 10 | Garden County, NE | 8 | 2.75 in |
County names link to the full hail history where we have published that county. The CSV below lists all 373 counties and all 39 states.
How August 2018 compares
| Compared with | Reports | August 2018 was |
|---|---|---|
| July 2018 | 1,140 | -277 (-24%) |
| August 2017 | 769 | +94 (+12%) |
| the average August in the other 11 years | 777 | +86 (+11%) |
August 2018 was the 5th busiest August of the 12 in the record and the 54th busiest of all 150 months.
| 2014 | 768 |
|---|---|
| 2015 | 1022 |
| 2016 | 568 |
| 2017 | 769 |
| 2018 | 863 |
| 2019 | 1287 |
| 2020 | 974 |
| 2021 | 735 |
| 2022 | 378 |
| 2023 | 920 |
| 2024 | 636 |
| 2025 | 494 |
Every August 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.