August 1991 storm reports: hail, wind and tornadoes
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In August 1991, 188 hail, 541 damaging-wind and 46 tornado reports were logged on 30 storm days across 45 states. The largest hail reported was 4.50″ (softball size) in Pondera County, MT on August 13, 1991. The most hail reports came on August 15, 1991 (17).
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 1991 All 1991 storm days September 1991 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 1991
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 8, 1991 | 13 | 51 | 2 | 1.75″ | 15 |
| Aug 19, 1991 | 15 | 41 | 8 | 1.75″ | 14 |
| Aug 3, 1991 | 6 | 52 | 3 | 1.75″ | 8 |
| Aug 6, 1991 | 13 | 30 | 1 | 2.75″ | 14 |
| Aug 4, 1991 | 9 | 28 | 4 | 1.75″ | 18 |
| Aug 18, 1991 | 6 | 26 | 6 | 1.75″ | 8 |
| Aug 7, 1991 | 5 | 25 | 5 | 1.75″ | 14 |
| Aug 16, 1991 | 10 | 23 | 2 | 2.50″ | 7 |
| Aug 30, 1991 | 3 | 32 | 0 | 1.75″ | 9 |
| Aug 9, 1991 | 3 | 30 | 0 | 1.00″ | 9 |
Largest hail reported in August 1991
| Day | Size | Location |
|---|---|---|
| Aug 13, 1991 | 4.50″ (softball) | Pondera County, MT |
| Aug 24, 1991 | 4.50″ (softball) | Ransom County, ND |
| Aug 2, 1991 | 4.00″ (grapefruit) | Sherman County, KS |
| Aug 11, 1991 | 4.00″ (grapefruit) | Morgan County, CO |
| Aug 2, 1991 | 3.00″ (teacup) | Sherman County, KS |
| Aug 6, 1991 | 2.75″ (baseball) | Wibaux County, MT |
| Aug 25, 1991 | 2.75″ (baseball) | Benson County, ND |
| Aug 1, 1991 | 2.50″ (tennis ball) | Aroostook County, ME |
| Aug 1, 1991 | 2.50″ (tennis ball) | Aroostook County, ME |
| Aug 5, 1991 | 2.50″ (tennis ball) | Custer County, SD |
Storm reports by state, August 1991
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Oklahoma | 17 | 41 | 0 | 2.50″ |
| Ohio | 8 | 43 | 2 | 1.25″ |
| New York | 7 | 39 | 2 | 1.75″ |
| Indiana | 7 | 28 | 4 | 1.75″ |
| Kansas | 9 | 28 | 1 | 4.00″ |
| North Carolina | 4 | 23 | 10 | 1.75″ |
| Florida | 8 | 25 | 3 | 1.75″ |
| Texas | 5 | 29 | 2 | 1.75″ |
| Kentucky | 10 | 17 | 1 | 1.75″ |
| Pennsylvania | 4 | 23 | 1 | 1.75″ |
| Illinois | 4 | 19 | 1 | 1.75″ |
| Georgia | 2 | 17 | 0 | 1.00″ |
| Missouri | 5 | 14 | 0 | 1.75″ |
| North Dakota | 14 | 4 | 0 | 4.50″ |
| Colorado | 11 | 4 | 2 | 4.00″ |
| Maryland | 1 | 15 | 1 | 1.00″ |
| Oregon | 8 | 9 | 0 | 2.00″ |
| Michigan | 4 | 9 | 3 | 1.75″ |
| Arizona | 1 | 12 | 1 | 1.00″ |
| New Jersey | 1 | 12 | 1 | 0.75″ |
| Virginia | 0 | 13 | 1 | – |
| Iowa | 3 | 6 | 3 | 1.00″ |
| Minnesota | 9 | 3 | 0 | 1.75″ |
| South Dakota | 8 | 3 | 1 | 2.50″ |
| Vermont | 0 | 12 | 0 | – |
| Utah | 7 | 4 | 0 | 1.75″ |
| Idaho | 2 | 7 | 1 | 1.50″ |
| Louisiana | 0 | 10 | 0 | – |
| Montana | 7 | 2 | 1 | 4.50″ |
| New Hampshire | 2 | 8 | 0 | 1.00″ |
| South Carolina | 0 | 9 | 0 | – |
| Nebraska | 4 | 4 | 0 | 1.75″ |
| Tennessee | 1 | 7 | 0 | 1.75″ |
| Wyoming | 5 | 2 | 1 | 1.75″ |
| Arkansas | 2 | 5 | 0 | 1.00″ |
| Massachusetts | 0 | 6 | 1 | – |
| New Mexico | 2 | 4 | 1 | 1.75″ |
| West Virginia | 0 | 7 | 0 | – |
| Mississippi | 0 | 6 | 0 | – |
| Washington | 2 | 4 | 0 | 1.00″ |
| Connecticut | 1 | 4 | 0 | 0.75″ |
| Maine | 2 | 2 | 0 | 2.50″ |
| Nevada | 1 | 0 | 1 | 0.75″ |
| Alabama | 0 | 1 | 0 | – |
| Wisconsin | 0 | 1 | 0 | – |
Every storm day in August 1991
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 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.