NOAA Storm Events · July 2017
Hail in July 2017: 1,064 NOAA reports across 41 states
NOAA logged 1,064 hail reports in July 2017, in 496 counties across 41 states. Minnesota had the most (161). The largest stone was 4 inches (a grapefruit), near Lafayette in Nicollet County, Minnesota, on July 9, 2017. The worst day was July 7, 2017, with 104 reports in 13 states.
- Where
- 496 counties in 41 states; Minnesota had 15% of the reports
- Largest stone
- 4 inches, a grapefruit, in Nicollet County, MN (near Lafayette), on July 9, 2017
- Worst day
- July 7, 2017: 104 reports in 13 states, 10% 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
July 7, 2017 was the worst day with 104 reports. A day with hail averaged 34.
| July 1 | 19 |
|---|---|
| July 2 | 48 |
| July 3 | 36 |
| July 4 | 64 |
| July 5 | 40 |
| July 6 | 63 |
| July 7 | 104 |
| July 8 | 19 |
| July 9 | 59 |
| July 10 | 54 |
| July 11 | 90 |
| July 12 | 25 |
| July 13 | 6 |
| July 14 | 10 |
| July 15 | 24 |
| July 16 | 40 |
| July 17 | 67 |
| July 18 | 42 |
| July 19 | 31 |
| July 20 | 26 |
| July 21 | 75 |
| July 22 | 24 |
| July 23 | 26 |
| July 24 | 8 |
| July 25 | 17 |
| July 26 | 2 |
| July 27 | 9 |
| July 28 | 2 |
| July 29 | 3 |
| July 30 | 4 |
| July 31 | 27 |
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.
| MN | 161 |
|---|---|
| ND | 140 |
| WI | 92 |
| SD | 91 |
| NE | 83 |
| OH | 56 |
| IL | 55 |
| IN | 35 |
| IA | 35 |
| TX | 30 |
| # | State | Reports | Share | Largest |
|---|---|---|---|---|
| 1 | Minnesota | 161 | 15.1% | 4 in |
| 2 | North Dakota | 140 | 13.2% | 2.75 in |
| 3 | Wisconsin | 92 | 8.6% | 3.5 in |
| 4 | South Dakota | 91 | 8.6% | 3 in |
| 5 | Nebraska | 83 | 7.8% | 2.75 in |
| 6 | Ohio | 56 | 5.3% | 2.5 in |
| 7 | Illinois | 55 | 5.2% | 2.5 in |
| 8 | Indiana | 35 | 3.3% | 1.75 in |
| 9 | Iowa | 35 | 3.3% | 1.75 in |
| 10 | Texas | 30 | 2.8% | 2.5 in |
| # | County | Reports | Largest |
|---|---|---|---|
| 1 | Otter Tail County, MN | 17 | 2 in |
| 2 | Bottineau County, ND | 13 | 1.75 in |
| 3 | Grand Forks County, ND | 11 | 1.75 in |
| 4 | Codington County, SD | 10 | 3 in |
| 5 | Cook County, IL | 10 | 1.5 in |
| 6 | Dakota County, MN | 10 | 1.5 in |
| 7 | Steele County, ND | 10 | 2.5 in |
| 8 | Traill County, ND | 10 | 2 in |
| 9 | Polk County, MN | 9 | 1.75 in |
| 10 | Walworth County, WI | 9 | 1 in |
County names link to the full hail history where we have published that county. The CSV below lists all 496 counties and all 41 states.
How July 2017 compares
| Compared with | Reports | July 2017 was |
|---|---|---|
| June 2017 | 1,818 | -754 (-41%) |
| July 2016 | 1,560 | -496 (-32%) |
| the average July in the other 11 years | 1,187 | -123 (-10%) |
July 2017 was the 8th busiest July of the 12 in the record and the 45th busiest of all 150 months.
| 2014 | 1287 |
|---|---|
| 2015 | 1122 |
| 2016 | 1560 |
| 2017 | 1064 |
| 2018 | 1140 |
| 2019 | 1141 |
| 2020 | 1392 |
| 2021 | 764 |
| 2022 | 898 |
| 2023 | 2139 |
| 2024 | 844 |
| 2025 | 768 |
Every July 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.