July 1966 storm reports: hail, wind and tornadoes
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In July 1966, 102 hail, 335 damaging-wind and 100 tornado reports were logged on 31 storm days across 42 states. The largest hail reported was 4.50″ (softball size) in Becker County, MN on July 4, 1966. The most hail reports came on July 10, 1966 (16). Tornadoes killed 3.
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← June 1966 All 1966 storm days August 1966 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of July 1966
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Jul 10, 1966 | 16 | 38 | 17 | 4.00″ | 18 |
| Jul 5, 1966 | 4 | 33 | 5 | 2.75″ | 13 |
| Jul 14, 1966 | 6 | 27 | 0 | 2.50″ | 11 |
| Jul 4, 1966 | 5 | 23 | 4 | 4.50″ | 11 |
| Jul 6, 1966 | 9 | 17 | 4 | 2.00″ | 8 |
| Jul 12, 1966 | 9 | 18 | 2 | 2.00″ | 10 |
| Jul 9, 1966 | 7 | 14 | 6 | 1.50″ | 10 |
| Jul 13, 1966 | 2 | 20 | 4 | 2.00″ | 14 |
| Jul 8, 1966 | 6 | 12 | 6 | 4.00″ | 9 |
| Jul 26, 1966 | 2 | 12 | 4 | 2.00″ | 10 |
Largest hail reported in July 1966
| Day | Size | Location |
|---|---|---|
| Jul 4, 1966 | 4.50″ (softball) | Becker County, MN |
| Jul 8, 1966 | 4.00″ (grapefruit) | Hennepin County, MN |
| Jul 10, 1966 | 4.00″ (grapefruit) | Fayette County, KY |
| Jul 28, 1966 | 3.00″ (teacup) | Bennett County, SD |
| Jul 5, 1966 | 2.75″ (baseball) | Greeley County, KS |
| Jul 23, 1966 | 2.75″ (baseball) | Richland County, ND |
| Jul 31, 1966 | 2.75″ (baseball) | Mercer County, ND |
| Jul 5, 1966 | 2.50″ (tennis ball) | Richardson County, NE |
| Jul 14, 1966 | 2.50″ (tennis ball) | Flathead County, MT |
| Jul 2, 1966 | 2.00″ (hen egg) | Roosevelt County, MT |
Storm reports by state, July 1966
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Minnesota | 8 | 22 | 13 | 4.50″ |
| South Dakota | 9 | 14 | 11 | 3.00″ |
| Ohio | 8 | 22 | 1 | 1.75″ |
| Kansas | 5 | 23 | 2 | 2.75″ |
| North Dakota | 7 | 11 | 12 | 2.75″ |
| Wisconsin | 2 | 14 | 14 | 1.25″ |
| Illinois | 4 | 22 | 1 | 2.00″ |
| Indiana | 5 | 14 | 6 | 1.75″ |
| Nebraska | 7 | 16 | 1 | 2.50″ |
| Georgia | 0 | 18 | 5 | – |
| Tennessee | 3 | 18 | 1 | 2.00″ |
| Montana | 13 | 4 | 2 | 2.50″ |
| Michigan | 2 | 13 | 2 | 1.75″ |
| Texas | 4 | 10 | 3 | 1.75″ |
| Iowa | 0 | 11 | 5 | – |
| Kentucky | 5 | 9 | 1 | 4.00″ |
| Colorado | 2 | 7 | 3 | 1.75″ |
| New York | 2 | 10 | 0 | 2.00″ |
| North Carolina | 1 | 10 | 0 | 1.00″ |
| Pennsylvania | 2 | 7 | 1 | 1.00″ |
| South Carolina | 1 | 9 | 0 | 1.00″ |
| Massachusetts | 0 | 7 | 0 | – |
| Mississippi | 0 | 5 | 2 | – |
| Missouri | 0 | 6 | 0 | – |
| Oklahoma | 2 | 3 | 1 | 1.25″ |
| Arkansas | 0 | 5 | 0 | – |
| Connecticut | 1 | 4 | 0 | 1.75″ |
| Florida | 1 | 4 | 0 | 1.25″ |
| Vermont | 2 | 3 | 0 | 2.00″ |
| Alabama | 0 | 3 | 1 | – |
| Arizona | 0 | 2 | 2 | – |
| Idaho | 3 | 0 | 0 | 1.75″ |
| Louisiana | 0 | 1 | 2 | – |
| New Hampshire | 0 | 0 | 3 | – |
| New Mexico | 1 | 1 | 1 | 1.00″ |
| West Virginia | 0 | 3 | 0 | – |
| Wyoming | 0 | 1 | 2 | – |
| Maine | 1 | 0 | 1 | 0.75″ |
| New Jersey | 1 | 1 | 0 | 1.00″ |
| California | 0 | 0 | 1 | – |
| Maryland | 0 | 1 | 0 | – |
| Washington | 0 | 1 | 0 | – |
Every storm day in July 1966
Jul 1 Jul 2 Jul 3 Jul 4 Jul 5 Jul 6 Jul 7 Jul 8 Jul 9 Jul 10 Jul 11 Jul 12 Jul 13 Jul 14 Jul 15 Jul 16 Jul 17 Jul 18 Jul 19 Jul 20 Jul 21 Jul 22 Jul 23 Jul 24 Jul 25 Jul 26 Jul 27 Jul 28 Jul 29 Jul 30 Jul 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.