The most recent reported hail day was 2024-05-17 -- 2 years ago, with nothing reported since. Genesee County is hit in most years. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2023-07-20 near Davison.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Michigan. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2024-05-17, around Goodrich. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Genesee County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 15 separate hail days here since 2010 -- 0.9 a year over 17 years of record. Those days carry 32 separate reports between them, two or three on a typical one. 6 of those 17 years produced none at all. One year dominates the record: 2012 alone produced 4 of the 15 days. The last five years have been quieter than the long run: 3 days since 2022, against 1.0 a year before that.
3 of the 15 days reached 2 inches or more -- 20%, or about one hail day in 5, the last on 2023-07-20. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 5 of the 15 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Michigan, see the Michigan hail map and history.
Reports cluster nearest Flint -- 3 of the county's 15 hail days -- then Mount Morris (3), Davison (2), Flushing (2) and Clio (2). Beyond those, NOAA names Grand Blanc and Otisville on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Mount Morris | 3 | 1.00″ |
| Davison | 1 | 2.75″ |
| 2 Ese Flushing | 1 | 2.00″ |
| 5 Nnw Davison | 1 | 2.00″ |
| 1 Ese Flushing | 1 | 1.75″ |
The season runs May through September: 13 of the 15 hail days on record fall in those 5 months (87%). July is the single busiest month, with 5 of them (33%). That peak sits inside the window rather than at either end. Hail has also been reported in March and April, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 1 |
| May | 3 |
| June | 1 |
| July | 5 |
| August | 2 |
| September | 2 |
That day put 1 report on the map, the biggest 1.25 inches near Goodrich. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2024-05-17 | 1.25″ | 1 |
| 2023-07-20 | 2.75″ | 6 |
| 2022-04-24 | 1.00″ | 1 |
| 2021-09-12 | 1.00″ | 1 |
| 2020-08-28 | 2.00″ | 4 |
| 2017-07-07 | 1.50″ | 2 |
| 2015-08-02 | 1.00″ | 1 |
| 2014-09-20 | 1.00″ | 1 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.75 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Oakland County (28 hail days), Livingston County (13) and Bay County (15). Genesee County sits in between.
Oakland County · Livingston County · Bay County
Back to the Michigan hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Genesee County, Michigan only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.