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Edition 2020-09

Hail days by metro, September 2020.

In September 2020, 12 of 333 metros had at least one day with a hail report within 10 miles of their centre, against 37 in September 2019. Minneapolis, MN led with 2 days, against its own September mean of 0.5 over 24 prior years of record. On 100 percent of metro hail days at least one report was measured by a person or an instrument; the rest were detected by radar alone. Nationally the month had 18 days with hail on record, against 28 a year earlier.

12

Of 333 metros with a hail day

18

Days with hail on record nationally

100%

Of metro hail days carried a measured report

2.50in

Largest measured, 5 Sep, MN

Hail days by metro, September 2020

Against each metro's own September on record

Hail days by metro, September 2020: each metro's hail days in the window, its year to date, its own mean for the span over the record, the share of its days carried by a measured report, and its largest measured and largest detected hail.
Rank Metro Days Year to date September mean Measured share Largest measured Largest detected
01 Minneapolis, MN 2 +1.5 5 0.5 100% 2 of 2 days measured 0.88″ None detected
02 Mesa, AZ 1 +0.7 3 0.3 100% 1 of 1 day measured 0.88″ None detected
03 Raleigh, NC 1 +1.0 4 0.0 100% 1 of 1 day measured 1.25″ None detected
04 St. Paul, MN 1 +0.6 3 0.4 100% 1 of 1 day measured 0.50″ None detected
05 Durham, NC 1 +1.0 1 0.0 100% 1 of 1 day measured 2.00″ None detected
06 Chandler, AZ 1 +0.7 3 0.3 100% 1 of 1 day measured 0.88″ None detected
07 Gilbert, AZ 1 +0.7 3 0.3 100% 1 of 1 day measured 0.88″ None detected
08 Grand Rapids, MI 1 +0.7 3 0.3 100% 1 of 1 day measured 0.25″ None detected
09 Cary, NC 1 +0.8 2 0.2 100% 1 of 1 day measured 2.25″ None detected
10 Salem, OR 1 +1.0 1 0.0 100% 1 of 1 day measured 0.88″ None detected
11 Rochester, MN 1 +1.0 4 0.0 100% 1 of 1 day measured 0.75″ None detected
12 Davenport, IA 1 +0.8 7 0.3 100% 1 of 1 day measured 0.70″ None detected

By state

The states by the hail days filed under each by its source, busiest first, with September 2019 beside it. The first 15 of 22; the rest are on their own pages.

  1. 01 Minnesota 9 days
    • 9 measured
    • 2.50″
    • 9 in September 2019
  2. 02 Michigan 5 days
    • 5 measured
    • 1.25″
    • 7 in September 2019
  3. 03 Wisconsin 4 days
    • 4 measured
    • 2.00″
    • 8 in September 2019
  4. 04 Kansas 3 days
    • 3 measured
    • 1.75″
    • 7 in September 2019
  5. 05 Iowa 3 days
    • 3 measured
    • 1.75″
    • 10 in September 2019
  6. 06 Texas 2 days
    • 2 measured
    • 1.00″
    • 4 in September 2019
  7. 07 Indiana 2 days
    • 2 measured
    • 1.75″
    • 2 in September 2019
  8. 08 Ohio 2 days
    • 2 measured
    • 2.00″
    • 2 in September 2019
  9. 09 New Mexico 2 days
    • 2 measured
    • 1.75″
    • 4 in September 2019
  10. 10 Illinois 2 days
    • 2 measured
    • 1.00″
    • 4 in September 2019
  11. 11 North Carolina 1 day
    • 1 measured
    • 2.25″
    • 4 in September 2019
  12. 12 Idaho 1 day
    • 1 measured
    • 1.50″
    • 5 in September 2019
  13. 13 Arizona 1 day
    • 1 measured
    • 0.88″
    • 5 in September 2019
  14. 14 Oregon 1 day
    • 1 measured
    • 0.88″
    • 4 in September 2019
  15. 15 South Dakota 1 day
    • 1 measured
    • 1.25″
    • 7 in September 2019

The busiest day of the month

Saturday 5 September 2020

Hail reports
148
Sources
×3
Measured
2.50″
States
5

Against September 2019

The same month a year earlier, counted the same way; the September 2019 edition has the full table. Lincoln, NE led then with 2 days.

12 −25

Metros with a hail day

September 2019 37

18 −10

Days with hail on record nationally

September 2019 28

18 −10

Days with a measured hail report

September 2019 28

532 −1,804

Hail reports, all sources

September 2019 2,336

Cite this edition

Titan Weather, Hail days by metro, September 2020. Compiled 25 August 2026. https://titanweather.com/data/2020/09

Compiled 25 August 2026 from the public federal storm record. The figures are the record as it stands; a revision by a federal source is carried here at the same address. The file carries every metro in the series, the ones with nothing this month included, with the same provenance line inside it.

Download September 2020 as CSV
Before you run an address

The month names the storms. The finder names the day.

The finder lists every day with hail on record within 10 miles of an address in the last 2 years, ranked by how many independent sources carried it, so the day a file names is a day the record holds.

Find the storm days
The next step

A metro is a region. A claim is an address.

This edition is the record around each metro's centre for one month: enough to rank, to compare with last year, and to cite. None of it says what reached one roof.

Run the address and the same archive is searched at the property: the storm, the date, the measured size, the distance and bearing from the roof, and the federal record each figure came from, in a document that states its own method. Ready in minutes.

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How this series is made

A metro
A metro, as this series uses the word, is a place the Census Bureau lists with a population of 100,000 or more, not a metropolitan statistical area. Smaller places have a hail-history page of their own; they are not in this table.
A hail day
A calendar date with at least one hail report in the archive within 10 miles of the metro's Census centre, from any source. Four sources describing one storm are one afternoon of hail, not four.
The mean
The metro's own hail days over the same span of the calendar, September, in each of the 24 prior years the record reaches, from 1996, divided by those years. A span is compared with itself, never with the country.
The measured share
Of a metro's hail days, the share on which at least one report came from a person or an instrument rather than from radar alone. A detection is a detection and is marked as one here and in every document we issue; the two are never added together.
Overlap
Two metros within 20 miles of each other share reports, so their counts are not exclusive and the national figures are distinct dates, not a sum of the table. The table ranks the record around each centre; it is not a report on any property, and it states no opinion about one.
The record
Searched from 1996 to today. Compiled 25 August 2026 and rebuilt as the federal sources revise it. Records are reproduced as the federal sources published them. The coverage page states what the record holds, by kind and by year.

About this record

Everything here is reproduced from public federal and volunteer weather records, as the agencies and observer networks that publish them released it. Titan Weather compiles the record; it does not observe the weather, and it is not affiliated with any source it cites.

No archive holds everything. Storms cross places where nobody is standing, instruments and spotters cover some areas better than others, sources revise their records, and recent reports can take weeks to arrive and settle. Where this page shows nothing, nothing was found in the sources searched, within the period and area it states. That is not a finding that no weather occurred.

These pages describe the public record near a place or on a date. They do not establish what reached any particular property, and nothing here is insurance, legal or engineering advice.