August 2011 storm reports: hail, wind and tornadoes
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In August 2011, 1,780 hail, 3,080 damaging-wind and 56 tornado reports were logged on 31 storm days across 48 states. The largest hail reported was 4.50″ (softball size) in Leavenworth County, KS on August 19, 2011. The most hail reports came on August 18, 2011 (267). Tornadoes killed 2.
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 2011 All 2011 storm days September 2011 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 2011
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 18, 2011 | 267 | 251 | 6 | 4.25″ | 25 |
| Aug 9, 2011 | 177 | 239 | 4 | 4.25″ | 20 |
| Aug 1, 2011 | 196 | 185 | 0 | 3.00″ | 20 |
| Aug 7, 2011 | 78 | 236 | 1 | 2.75″ | 22 |
| Aug 8, 2011 | 67 | 241 | 1 | 2.75″ | 26 |
| Aug 19, 2011 | 139 | 166 | 2 | 4.50″ | 26 |
| Aug 21, 2011 | 75 | 197 | 2 | 3.00″ | 31 |
| Aug 13, 2011 | 89 | 145 | 0 | 2.50″ | 19 |
| Aug 12, 2011 | 65 | 156 | 0 | 2.50″ | 19 |
| Aug 24, 2011 | 49 | 135 | 3 | 1.75″ | 19 |
Largest hail reported in August 2011
| Day | Size | Location |
|---|---|---|
| Aug 19, 2011 | 4.50″ (softball) | Leavenworth County, KS |
| Aug 9, 2011 | 4.25″ (grapefruit) | Rooks County, KS |
| Aug 18, 2011 | 4.25″ (grapefruit) | Knox County, NE |
| Aug 18, 2011 | 4.25″ (grapefruit) | Dixon County, NE |
| Aug 18, 2011 | 4.25″ (grapefruit) | Douglas County, NE |
| Aug 19, 2011 | 4.25″ (grapefruit) | Leavenworth County, KS |
| Aug 1, 2011 | 3.00″ (teacup) | Nassau County, NY |
| Aug 1, 2011 | 3.00″ (teacup) | Butte County, SD |
| Aug 1, 2011 | 3.00″ (teacup) | Westchester County, NY |
| Aug 10, 2011 | 3.00″ (teacup) | Logan County, CO |
Storm reports by state, August 2011
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Kansas | 157 | 272 | 0 | 4.50″ |
| Nebraska | 200 | 90 | 13 | 4.25″ |
| South Dakota | 162 | 114 | 2 | 3.00″ |
| Ohio | 128 | 84 | 1 | 2.75″ |
| Missouri | 44 | 168 | 0 | 2.75″ |
| Oklahoma | 37 | 171 | 1 | 1.75″ |
| South Carolina | 24 | 178 | 0 | 1.75″ |
| New York | 80 | 116 | 3 | 3.00″ |
| North Carolina | 44 | 143 | 6 | 1.75″ |
| Pennsylvania | 93 | 81 | 0 | 1.75″ |
| Virginia | 45 | 123 | 2 | 1.75″ |
| Arkansas | 16 | 125 | 0 | 1.75″ |
| Indiana | 51 | 89 | 0 | 2.00″ |
| Iowa | 58 | 81 | 0 | 3.00″ |
| Georgia | 11 | 124 | 0 | 1.75″ |
| North Dakota | 66 | 55 | 0 | 2.00″ |
| Minnesota | 57 | 63 | 0 | 1.75″ |
| Michigan | 46 | 68 | 5 | 2.00″ |
| Maryland | 50 | 66 | 2 | 2.25″ |
| Illinois | 68 | 49 | 0 | 2.50″ |
| Texas | 8 | 81 | 4 | 1.25″ |
| Montana | 45 | 44 | 1 | 2.00″ |
| New Jersey | 21 | 54 | 2 | 1.75″ |
| Tennessee | 13 | 64 | 0 | 1.50″ |
| Mississippi | 6 | 70 | 0 | 1.25″ |
| Alabama | 7 | 68 | 0 | 1.75″ |
| Kentucky | 2 | 70 | 0 | 1.00″ |
| Massachusetts | 38 | 25 | 0 | 1.75″ |
| Colorado | 42 | 13 | 2 | 3.00″ |
| Florida | 4 | 47 | 2 | 1.75″ |
| Maine | 30 | 19 | 0 | 1.75″ |
| Wisconsin | 18 | 25 | 6 | 2.25″ |
| Louisiana | 5 | 43 | 0 | 1.00″ |
| Wyoming | 32 | 15 | 0 | 2.75″ |
| New Hampshire | 12 | 26 | 1 | 1.75″ |
| Arizona | 0 | 37 | 0 | – |
| Connecticut | 18 | 19 | 0 | 1.25″ |
| West Virginia | 4 | 24 | 0 | 1.25″ |
| Utah | 9 | 15 | 1 | 1.50″ |
| Vermont | 12 | 12 | 0 | 1.75″ |
| Delaware | 5 | 15 | 1 | 1.25″ |
| Idaho | 4 | 11 | 0 | 1.00″ |
| New Mexico | 4 | 7 | 1 | 1.75″ |
| California | 1 | 8 | 0 | 0.88″ |
| Nevada | 0 | 4 | 0 | – |
| Oregon | 3 | 1 | 0 | 1.00″ |
| District of Columbia | 0 | 2 | 0 | – |
| Rhode Island | 0 | 1 | 0 | – |
Every storm day in August 2011
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.