September 1971 storm reports: hail, wind and tornadoes
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In September 1971, 13 hail, 32 damaging-wind and 47 tornado reports were logged on 22 storm days across 26 states. The largest hail reported was 2.50″ (tennis ball size) in Gila County, AZ on September 17, 1971. The most hail reports came on September 5, 1971 (3).
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← August 1971 All 1971 storm days October 1971 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of September 1971
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Sep 16, 1971 | 0 | 5 | 18 | – | 7 |
| Sep 4, 1971 | 1 | 13 | 1 | 0.87″ | 7 |
| Sep 1, 1971 | 1 | 2 | 4 | 1.75″ | 3 |
| Sep 5, 1971 | 3 | 4 | 0 | 1.75″ | 4 |
| Sep 10, 1971 | 0 | 1 | 6 | – | 3 |
| Sep 28, 1971 | 0 | 2 | 3 | – | 2 |
| Sep 6, 1971 | 2 | 1 | 1 | 1.75″ | 3 |
| Sep 9, 1971 | 1 | 0 | 3 | 1.50″ | 4 |
| Sep 12, 1971 | 0 | 0 | 3 | – | 3 |
| Sep 17, 1971 | 1 | 0 | 2 | 2.50″ | 3 |
Largest hail reported in September 1971
| Day | Size | Location |
|---|---|---|
| Sep 17, 1971 | 2.50″ (tennis ball) | Gila County, AZ |
| Sep 1, 1971 | 1.75″ (golf ball) | Pima County, AZ |
| Sep 5, 1971 | 1.75″ (golf ball) | Creek County, OK |
| Sep 5, 1971 | 1.75″ (golf ball) | Okmulgee County, OK |
| Sep 5, 1971 | 1.75″ (golf ball) | Cottle County, TX |
| Sep 6, 1971 | 1.75″ (golf ball) | Grady County, OK |
| Sep 23, 1971 | 1.75″ (golf ball) | El Paso County, TX |
| Sep 9, 1971 | 1.50″ (ping pong ball) | Dubuque County, IA |
| Sep 11, 1971 | 1.00″ (quarter) | Lawrence County, IN |
| Sep 29, 1971 | 1.00″ (quarter) | Sarpy County, NE |
Storm reports by state, September 1971
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| Texas | 2 | 2 | 7 | 1.75″ |
| Florida | 0 | 4 | 4 | – |
| Louisiana | 0 | 0 | 8 | – |
| Oklahoma | 4 | 4 | 0 | 1.75″ |
| Arizona | 2 | 2 | 3 | 2.50″ |
| Missouri | 0 | 7 | 0 | – |
| Wisconsin | 0 | 1 | 5 | – |
| Alabama | 0 | 0 | 5 | – |
| Iowa | 2 | 2 | 0 | 1.50″ |
| Mississippi | 0 | 1 | 3 | – |
| South Dakota | 0 | 3 | 0 | – |
| Arkansas | 0 | 0 | 2 | – |
| Indiana | 1 | 0 | 1 | 1.00″ |
| Michigan | 0 | 2 | 0 | – |
| Minnesota | 1 | 0 | 1 | 1.00″ |
| New Mexico | 0 | 0 | 2 | – |
| Pennsylvania | 0 | 1 | 1 | – |
| Illinois | 0 | 1 | 0 | – |
| Kansas | 0 | 1 | 0 | – |
| Massachusetts | 0 | 0 | 1 | – |
| Maryland | 0 | 0 | 1 | – |
| Nebraska | 1 | 0 | 0 | 1.00″ |
| Ohio | 0 | 0 | 1 | – |
| South Carolina | 0 | 0 | 1 | – |
| Tennessee | 0 | 1 | 0 | – |
| Utah | 0 | 0 | 1 | – |
Every storm day in September 1971
Sep 1 Sep 2 Sep 3 Sep 4 Sep 5 Sep 6 Sep 7 Sep 9 Sep 10 Sep 11 Sep 12 Sep 13 Sep 14 Sep 16 Sep 17 Sep 18 Sep 19 Sep 23 Sep 24 Sep 28 Sep 29 Sep 30
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.