The most recent reported hail day was 2023-06-24 -- 3 years ago, with nothing reported since. Traill County is hit in most years. The largest stone on record here is 2 inches, a hen egg and twice the National Weather Service's 1 inch severe criterion, reported on 2022-07-14 near Grandin.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in North Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2023-06-24, around Mayville. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Traill 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 25 separate hail days here since 2010 -- 1.5 a year over 17 years of record. Those days carry 56 separate reports between them, two or three on a typical one. 4 of those 17 years produced none at all. One year dominates the record: 2019 alone produced 5 of the 25 days. The last five years have been quieter than the long run: 2 days since 2022, against 1.9 a year before that.
Most hail here stays under 2 inches: only 2 of the 25 days on record passed it, 8%, the last on 2022-07-14. Those big days do not follow the county's usual calendar: most of them fall in July, not June. 9 of the 25 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of North Dakota, see the North Dakota hail map and history.
Reports cluster nearest Hatton -- 8 of the county's 25 hail days -- then Buxton (7), Mayville (5), Reynolds (4) and Clifford (3). Beyond those, NOAA names Hillsboro, Portland, Grandin, Caledonia and Blanchard on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Hatton | 4 | 1.75″ |
| Mayville | 3 | 1.50″ |
| Hillsboro | 2 | 1.75″ |
| Buxton | 2 | 1.50″ |
| Reynolds | 2 | 1.00″ |
The season runs June through August: 23 of the 25 hail days on record fall in those 3 months (92%). June is the single busiest month, with 10 of them (40%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in May and September, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| May | 1 |
| June | 10 |
| July | 9 |
| August | 4 |
| September | 1 |
That day put 2 reports on the map, the biggest 1 inch near Mayville. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2023-06-24 | 1.00″ | 2 |
| 2022-07-14 | 2.00″ | 1 |
| 2021-07-19 | 1.00″ | 2 |
| 2021-06-07 | 1.00″ | 5 |
| 2019-09-21 | 1.00″ | 1 |
| 2019-08-19 | 1.50″ | 2 |
| 2019-07-11 | 1.00″ | 1 |
| 2019-06-29 | 1.50″ | 3 |
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 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, over the state line included: Steele County (24 hail days), Grand Forks County (45), Cass County (60), Norman County, Minnesota (31) and Polk County, Minnesota (59). Traill County sits in between.
Steele County · Grand Forks County · Cass County · Norman County, Minnesota · Polk County, Minnesota
Back to the North Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Traill County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.