August 2017 storm reports: hail, wind and tornadoes
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In August 2017, 769 hail, 1,477 damaging-wind and 117 tornado reports were logged on 31 storm days across 48 states. The largest hail reported was 4.25″ (grapefruit size) in Barber County, KS on August 9, 2017. The most hail reports came on August 10, 2017 (92).
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 2017 All 2017 storm days September 2017 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 2017
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 22, 2017 | 10 | 271 | 3 | 1.75″ | 16 |
| Aug 4, 2017 | 14 | 213 | 3 | 1.25″ | 17 |
| Aug 10, 2017 | 92 | 73 | 0 | 4.25″ | 13 |
| Aug 12, 2017 | 61 | 88 | 5 | 2.75″ | 16 |
| Aug 2, 2017 | 66 | 85 | 1 | 2.75″ | 22 |
| Aug 19, 2017 | 37 | 106 | 5 | 2.50″ | 14 |
| Aug 18, 2017 | 55 | 60 | 8 | 2.00″ | 12 |
| Aug 3, 2017 | 25 | 87 | 5 | 1.75″ | 24 |
| Aug 13, 2017 | 60 | 37 | 1 | 3.00″ | 16 |
| Aug 16, 2017 | 15 | 46 | 14 | 2.50″ | 9 |
Largest hail reported in August 2017
| Day | Size | Location |
|---|---|---|
| Aug 9, 2017 | 4.25″ (grapefruit) | Barber County, KS |
| Aug 10, 2017 | 4.25″ (grapefruit) | Sheridan County, KS |
| Aug 10, 2017 | 4.25″ (grapefruit) | Trego County, KS |
| Aug 10, 2017 | 4.25″ (grapefruit) | Trego County, KS |
| Aug 10, 2017 | 3.00″ (teacup) | Prowers County, CO |
| Aug 13, 2017 | 3.00″ (teacup) | Custer County, NE |
| Aug 26, 2017 | 3.00″ (teacup) | Box Butte County, NE |
| Aug 2, 2017 | 2.75″ (baseball) | Lincoln County, NE |
| Aug 9, 2017 | 2.75″ (baseball) | San Miguel County, NM |
| Aug 9, 2017 | 2.75″ (baseball) | San Miguel County, NM |
Storm reports by state, August 2017
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Pennsylvania | 12 | 283 | 3 | 1.75″ |
| New York | 21 | 206 | 3 | 1.75″ |
| Nebraska | 124 | 47 | 7 | 3.00″ |
| Kansas | 87 | 80 | 0 | 4.25″ |
| South Dakota | 128 | 35 | 1 | 2.75″ |
| Texas | 14 | 72 | 23 | 2.50″ |
| Oklahoma | 16 | 74 | 4 | 2.00″ |
| Colorado | 75 | 12 | 4 | 3.00″ |
| Maryland | 6 | 81 | 1 | 1.00″ |
| Ohio | 26 | 47 | 1 | 1.75″ |
| New Mexico | 34 | 22 | 1 | 2.75″ |
| Virginia | 2 | 49 | 2 | 1.00″ |
| Iowa | 32 | 12 | 5 | 1.75″ |
| Arizona | 2 | 39 | 1 | 1.00″ |
| Minnesota | 18 | 7 | 17 | 2.00″ |
| West Virginia | 3 | 33 | 0 | 1.00″ |
| Florida | 1 | 30 | 4 | 0.88″ |
| Michigan | 21 | 9 | 3 | 1.75″ |
| Wisconsin | 31 | 2 | 0 | 1.50″ |
| Georgia | 0 | 31 | 1 | – |
| Illinois | 14 | 13 | 4 | 1.75″ |
| Missouri | 15 | 14 | 0 | 2.00″ |
| New Hampshire | 4 | 25 | 0 | 1.75″ |
| Massachusetts | 4 | 22 | 0 | 1.00″ |
| South Carolina | 1 | 25 | 0 | 1.00″ |
| California | 10 | 13 | 0 | 1.75″ |
| Vermont | 1 | 22 | 0 | 1.75″ |
| Arkansas | 8 | 13 | 1 | 1.75″ |
| Mississippi | 0 | 11 | 11 | – |
| New Jersey | 2 | 20 | 0 | 0.75″ |
| Montana | 8 | 12 | 0 | 1.00″ |
| North Dakota | 19 | 1 | 0 | 2.75″ |
| Indiana | 10 | 9 | 0 | 1.25″ |
| North Carolina | 1 | 16 | 0 | 0.88″ |
| Kentucky | 3 | 13 | 0 | 1.00″ |
| Louisiana | 0 | 7 | 7 | – |
| Maine | 2 | 10 | 2 | 1.50″ |
| Wyoming | 6 | 7 | 0 | 1.00″ |
| Connecticut | 4 | 7 | 0 | 1.00″ |
| Idaho | 0 | 11 | 0 | – |
| Tennessee | 0 | 5 | 6 | – |
| Alabama | 0 | 5 | 5 | – |
| Nevada | 0 | 10 | 0 | – |
| Utah | 3 | 6 | 0 | 1.00″ |
| District of Columbia | 0 | 5 | 0 | – |
| Delaware | 0 | 2 | 0 | – |
| Oregon | 1 | 1 | 0 | 1.00″ |
| Rhode Island | 0 | 1 | 0 | – |
Every storm day in August 2017
Aug 1 Aug 2 Aug 3 Aug 4 Aug 5 Aug 6 Aug 7 Aug 8 Aug 9 Aug 10 Aug 11 Aug 12 Aug 13 Aug 14 Aug 15 Aug 16 Aug 17 Aug 18 Aug 19 Aug 20 Aug 21 Aug 22 Aug 23 Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 Aug 29 Aug 30 Aug 31
A storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Read more about NOAA storm reports.