North Dakota Hail Map & History
North Dakota was hit as recently as 2026-09-07, 7 days ago. NOAA's Storm Prediction Center has logged 552 separate hail days in North Dakota since 2010, across 3,606 individual storm reports. 145 of those days brought hail 2 inches or larger, and the largest stone on record is 5 inches on 2010-07-13 near Fort Yates, Sioux.
North Dakota's Red River valley (Fargo, Grand Forks) and the Bismarck area are struck by large hail through the short, intense storm season. Pick a date below to see the NOAA radar swath and reports, or check a specific address.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in North Dakota. Radar-indicated, not a guarantee of damage.
A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls North Dakota 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 ->Hail history in North Dakota
North Dakota averages 32 reported hail days a year across 17 years of NOAA archive, about 9 of them carrying hail 2″ or larger -- the size that routinely totals roofs. Major metros watched here: Fargo, Bismarck, Grand Forks.
When it hails in North Dakota
North Dakota's busiest hail month is July, with 180 of its 552 hail days on record. May through August holds 495 of them, 90% of the record.
| Month | Hail days since 2010 |
|---|---|
| February | 1 |
| March | 2 |
| April | 5 |
| May | 54 |
| June | 150 |
| July | 180 |
| August | 111 |
| September | 47 |
| October | 2 |
Top North Dakota counties by hail frequency
| County | Hail days since 2010 | Largest stone |
|---|---|---|
| Morton | 68 | 3.00″ |
| Cass | 61 | 2.50″ |
| Grant | 56 | 4.25″ |
| Ward | 56 | 2.75″ |
| Burleigh | 55 | 4.50″ |
| Barnes | 55 | 2.75″ |
North Dakota hail history by county
53 North Dakota counties have at least 13 NOAA hail days on record since 2010 -- enough archive signal for a page of their own. Ordered by hail days.
Morton County · Cass County · Grant County · Ward County · Barnes County · Burleigh County · Stark County · Williams County · Hettinger County · Mountrail County · Stutsman County · Grand Forks County · McKenzie County · McLean County · Adams County · Dunn County · Benson County · Kidder County · Richland County · Bowman County · Eddy County · McHenry County · Mercer County · Pembina County · Bottineau County · Ramsey County · Sioux County · Wells County · Emmons County · McIntosh County · Renville County · Towner County · Dickey County · LaMoure County · Walsh County · Cavalier County · Divide County · Burke County · Griggs County · Ransom County · Sargent County · Steele County · Traill County · Billings County · Logan County · Nelson County · Oliver County · Slope County · Golden Valley County · Pierce County · Foster County · Rolette County · Sheridan County
Recent North Dakota hail days
| Date | Max hail | Reports |
|---|---|---|
| 2026-09-07 | 1.75″ | 1 |
| 2026-09-06 | 1.75″ | 6 |
| 2026-09-05 | 1.50″ | 3 |
| 2026-09-03 | 1.50″ | 2 |
| 2026-09-02 | 1.00″ | 1 |
| 2026-08-24 | 3.25″ | 10 |
| 2026-08-23 | 1.50″ | 2 |
| 2026-08-11 | 3.50″ | 28 |
How to read the North Dakota map
The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC ground reports. Yellow is around an inch, red is 1.5 to 2″, and purple is 2″ and up -- see how hail size maps to roof damage. Click any spot on the map to see the hail history at that point, or look up a full street address on the hail history by address tool. Today's nationwide activity is on today's hail report.
Nearby states
Arkansas · New Mexico · Wyoming · North Carolina · Georgia · Montana
FAQ
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.