August 1963 storm reports: hail, wind and tornadoes
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In August 1963, 43 hail, 93 damaging-wind and 26 tornado reports were logged on 31 storm days across 38 states. The largest hail reported was 4.00″ (grapefruit size) in Anoka County, MN on August 11, 1963. The most hail reports came on August 1, 1963 (7). Tornadoes killed 2.
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 1963 All 1963 storm days September 1963 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 1963
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 1, 1963 | 7 | 11 | 2 | 2.00″ | 12 |
| Aug 8, 1963 | 4 | 9 | 2 | 2.75″ | 9 |
| Aug 13, 1963 | 2 | 5 | 4 | 1.75″ | 8 |
| Aug 16, 1963 | 5 | 3 | 3 | 3.00″ | 6 |
| Aug 28, 1963 | 1 | 10 | 0 | 1.00″ | 5 |
| Aug 3, 1963 | 2 | 6 | 1 | 1.75″ | 5 |
| Aug 2, 1963 | 2 | 5 | 0 | 1.00″ | 3 |
| Aug 27, 1963 | 1 | 5 | 1 | 2.75″ | 4 |
| Aug 6, 1963 | 3 | 1 | 2 | 1.50″ | 4 |
| Aug 7, 1963 | 2 | 4 | 0 | 1.00″ | 6 |
Largest hail reported in August 1963
| Day | Size | Location |
|---|---|---|
| Aug 11, 1963 | 4.00″ (grapefruit) | Anoka County, MN |
| Aug 16, 1963 | 3.00″ (teacup) | Olmsted County, MN |
| Aug 8, 1963 | 2.75″ (baseball) | Cass County, ND |
| Aug 8, 1963 | 2.75″ (baseball) | Clay County, ND |
| Aug 27, 1963 | 2.75″ (baseball) | Custer County, NE |
| Aug 8, 1963 | 2.50″ (tennis ball) | Goodhue County, MN |
| Aug 16, 1963 | 2.50″ (tennis ball) | Juneau County, WI |
| Aug 1, 1963 | 2.00″ (hen egg) | McKenzie County, ND |
| Aug 1, 1963 | 2.00″ (hen egg) | Richland County, MT |
| Aug 3, 1963 | 1.75″ (golf ball) | Cuyahoga County, OH |
Storm reports by state, August 1963
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Texas | 0 | 8 | 4 | – |
| Florida | 1 | 3 | 6 | 1.00″ |
| Kansas | 1 | 7 | 2 | 1.00″ |
| Oklahoma | 2 | 7 | 1 | 1.00″ |
| North Dakota | 4 | 5 | 0 | 2.75″ |
| Wisconsin | 4 | 2 | 3 | 2.50″ |
| Minnesota | 6 | 1 | 1 | 4.00″ |
| Arizona | 0 | 7 | 0 | – |
| Nebraska | 2 | 4 | 1 | 2.75″ |
| Pennsylvania | 2 | 4 | 1 | 1.75″ |
| South Dakota | 1 | 5 | 1 | 0.75″ |
| Montana | 3 | 3 | 0 | 2.00″ |
| Illinois | 3 | 2 | 0 | 1.00″ |
| Maryland | 2 | 3 | 0 | 1.00″ |
| Arkansas | 0 | 4 | 0 | – |
| Georgia | 0 | 4 | 0 | – |
| New York | 1 | 3 | 0 | 0.75″ |
| Connecticut | 1 | 2 | 0 | 1.00″ |
| Mississippi | 0 | 3 | 0 | – |
| New Mexico | 0 | 1 | 2 | – |
| Ohio | 1 | 2 | 0 | 1.75″ |
| Delaware | 0 | 2 | 0 | – |
| Iowa | 0 | 2 | 0 | – |
| Massachusetts | 1 | 1 | 0 | 0.75″ |
| Missouri | 0 | 1 | 1 | – |
| New Hampshire | 1 | 0 | 1 | 1.00″ |
| South Carolina | 0 | 0 | 2 | – |
| Tennessee | 0 | 2 | 0 | – |
| Utah | 2 | 0 | 0 | 1.50″ |
| Washington | 2 | 0 | 0 | 1.75″ |
| Colorado | 0 | 1 | 0 | – |
| Idaho | 1 | 0 | 0 | 0.75″ |
| Indiana | 0 | 1 | 0 | – |
| Louisiana | 0 | 1 | 0 | – |
| Maine | 1 | 0 | 0 | 0.75″ |
| Michigan | 0 | 1 | 0 | – |
| New Jersey | 0 | 1 | 0 | – |
| Oregon | 1 | 0 | 0 | 1.00″ |
Every storm day in August 1963
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.