Nelson County, North Dakota Hail Map & History
Nelson County was hit as recently as 2026-08-24, 21 days ago. Nelson County has recorded hail in nearly every year on the archive. The largest stone on record here is 3.25 inches and 3.2 times the National Weather Service's 1 inch severe criterion, reported on 2026-08-24 near Tolna.
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 2026-08-24, around Tolna. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Nelson 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 ->How often it hails in Nelson County
NOAA's Storm Prediction Center has logged 24 separate hail days here since 2010 -- 1.4 a year over 17 years of record. They carry 34 reports in total: most hail days here are logged from a single spot. 2 of those 17 years produced none at all. The busiest single year was 2019, with 3 hail days. The last five years track the long-run rate, with 5 days since 2022.
Most hail here stays under 2 inches: only 2 of the 24 days on record passed it, 8%, the last on 2026-08-24. Those big days do not follow the county's usual calendar: most of them fall in July, not June. 6 of the 24 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of North Dakota, see the North Dakota hail map and history.
Hardest-hit places in Nelson County
Reports cluster nearest Lakota -- 7 of the county's 24 hail days -- then Aneta (4), Tolna (3), Michigan (3) and McVille (3). Beyond those, NOAA names Brocket, Petersburg and Pekin on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Aneta | 3 | 1.25″ |
| 2 NW Tolna | 2 | 3.25″ |
| 3 Sw Brocket | 2 | 1.75″ |
| 1 N Tolna | 1 | 3.00″ |
| Kloten | 1 | 2.00″ |
When it hails in Nelson County
The season runs June through August: 21 of the 24 hail days on record fall in those 3 months (88%). June is the single busiest month, with 8 of them (33%). 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 | 2 |
| June | 8 |
| July | 7 |
| August | 6 |
| September | 1 |
Recent Nelson County hail days
That day put 5 reports on the map, the biggest 3.25 inches near Tolna. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-24 | 3.25″ | 5 |
| 2025-06-28 | 1.00″ | 1 |
| 2025-06-22 | 1.00″ | 1 |
| 2023-06-27 | 1.00″ | 1 |
| 2022-06-24 | 1.00″ | 1 |
| 2021-08-22 | 1.00″ | 1 |
| 2021-08-09 | 1.25″ | 1 |
| 2020-06-25 | 1.50″ | 1 |
How to read the Nelson County map
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 3.25 inches, which is the purple band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own: Ramsey County (33 hail days), Griggs County (25) and Steele County (25). Every one of them takes more hail than Nelson County.
Ramsey County · Griggs County · Steele County
Back to the North Dakota hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Nelson County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.