August 1966 storm reports: hail, wind and tornadoes
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In August 1966, 53 hail, 109 damaging-wind and 58 tornado reports were logged on 27 storm days across 40 states. The largest hail reported was 3.00″ (teacup size) in Caddo County, OK on August 10, 1966. The most hail reports came on August 9, 1966 (10).
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 1966 All 1966 storm days September 1966 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 1966
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 6, 1966 | 8 | 11 | 4 | 2.00″ | 10 |
| Aug 9, 1966 | 10 | 7 | 6 | 2.75″ | 12 |
| Aug 15, 1966 | 6 | 10 | 3 | 2.25″ | 7 |
| Aug 5, 1966 | 5 | 5 | 6 | 2.75″ | 5 |
| Aug 11, 1966 | 2 | 7 | 7 | 2.00″ | 11 |
| Aug 7, 1966 | 3 | 8 | 3 | 1.75″ | 6 |
| Aug 8, 1966 | 4 | 8 | 1 | 1.75″ | 7 |
| Aug 10, 1966 | 2 | 10 | 0 | 3.00″ | 5 |
| Aug 12, 1966 | 2 | 5 | 4 | 1.25″ | 9 |
| Aug 16, 1966 | 2 | 6 | 2 | 1.75″ | 7 |
Largest hail reported in August 1966
| Day | Size | Location |
|---|---|---|
| Aug 10, 1966 | 3.00″ (teacup) | Caddo County, OK |
| Aug 28, 1966 | 3.00″ (teacup) | Jefferson County, OK |
| Aug 5, 1966 | 2.75″ (baseball) | Towner County, ND |
| Aug 5, 1966 | 2.75″ (baseball) | Ramsey County, ND |
| Aug 9, 1966 | 2.75″ (baseball) | Baca County, CO |
| Aug 9, 1966 | 2.50″ (tennis ball) | Harper County, OK |
| Aug 10, 1966 | 2.50″ (tennis ball) | Tillman County, OK |
| Aug 15, 1966 | 2.25″ (hen egg) | Jackson County, MO |
| Aug 6, 1966 | 2.00″ (hen egg) | Grant County, SD |
| Aug 6, 1966 | 2.00″ (hen egg) | Coconino County, AZ |
Storm reports by state, August 1966
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Oklahoma | 4 | 12 | 0 | 3.00″ |
| Texas | 3 | 5 | 8 | 1.75″ |
| New Mexico | 2 | 7 | 5 | 2.00″ |
| Kansas | 4 | 6 | 2 | 1.75″ |
| Michigan | 5 | 5 | 2 | 1.75″ |
| Ohio | 5 | 7 | 0 | 1.75″ |
| Colorado | 3 | 4 | 4 | 2.75″ |
| Wisconsin | 3 | 5 | 2 | 2.00″ |
| North Dakota | 2 | 2 | 5 | 2.75″ |
| Arizona | 2 | 4 | 2 | 2.00″ |
| Minnesota | 2 | 2 | 3 | 1.50″ |
| New York | 2 | 5 | 0 | 1.00″ |
| South Dakota | 3 | 3 | 1 | 2.00″ |
| Florida | 0 | 2 | 4 | – |
| Iowa | 0 | 5 | 1 | – |
| Wyoming | 2 | 3 | 1 | 0.75″ |
| Louisiana | 0 | 4 | 1 | – |
| Missouri | 2 | 3 | 0 | 2.25″ |
| Pennsylvania | 0 | 4 | 1 | – |
| Idaho | 0 | 4 | 0 | – |
| Indiana | 0 | 4 | 0 | – |
| Massachusetts | 0 | 1 | 3 | – |
| Nebraska | 2 | 2 | 0 | 1.50″ |
| Arkansas | 0 | 3 | 0 | – |
| Georgia | 0 | 1 | 2 | – |
| Illinois | 1 | 1 | 1 | 0.75″ |
| Kentucky | 1 | 0 | 1 | 0.75″ |
| Mississippi | 0 | 2 | 0 | – |
| Montana | 2 | 0 | 0 | 1.75″ |
| New Hampshire | 1 | 0 | 1 | 1.25″ |
| New Jersey | 1 | 1 | 0 | 1.75″ |
| South Carolina | 0 | 1 | 1 | – |
| West Virginia | 0 | 0 | 2 | – |
| Alabama | 0 | 0 | 1 | – |
| Connecticut | 0 | 0 | 1 | – |
| North Carolina | 0 | 0 | 1 | – |
| Oregon | 0 | 0 | 1 | – |
| Tennessee | 1 | 0 | 0 | 2.00″ |
| Utah | 0 | 1 | 0 | – |
| Vermont | 0 | 0 | 1 | – |
Every storm day in August 1966
Aug 1 Aug 2 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 25 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.