Harper County, Kansas Hail Map & History
Harper County was hit as recently as 2026-06-21, 85 days ago. Harper 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 2024-04-30 near Anthony.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Kansas. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-06-21, around Harper. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Harper 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 Harper County
NOAA's Storm Prediction Center has logged 33 separate hail days here since 2010 -- 1.9 a year over 17 years of record. They carry 55 reports in total: most hail days here are logged from a single spot. 4 of those 17 years produced none at all. The busiest single year was 2026, with 4 hail days. The last five years track the long-run rate, with 9 days since 2022.
5 of the 33 days reached 2 inches or more -- 15%, or about one hail day in 7, the last on 2025-09-01. Those big days do not follow the county's usual calendar: most of them fall in April, not May. 9 of the 33 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Kansas, see the Kansas hail map and history.
Hardest-hit places in Harper County
Reports cluster nearest Anthony -- 13 of the county's 33 hail days -- then Harper (8), Bluff City (7), Attica (6) and Waldron (2). Beyond those, NOAA names Argonia and Crystal Springs on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Anthony | 7 | 2.75″ |
| 2 E Harper | 3 | 1.00″ |
| Attica | 2 | 2.50″ |
| Bluff City | 2 | 1.75″ |
| Harper | 2 | 1.75″ |
When it hails in Harper County
The season runs March through June: 27 of the 33 hail days on record fall in those 4 months (82%). May is the single busiest month, with 14 of them (42%). That peak sits inside the window rather than at either end. January, November and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 2 |
| April | 6 |
| May | 14 |
| June | 5 |
| July | 1 |
| August | 2 |
| September | 1 |
| October | 1 |
Recent Harper County hail days
That day put 1 report on the map, the biggest 1 inch near Harper. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-21 | 1.00″ | 1 |
| 2026-06-18 | 1.75″ | 4 |
| 2026-04-17 | 1.00″ | 1 |
| 2026-03-10 | 1.00″ | 1 |
| 2025-09-01 | 2.50″ | 2 |
| 2025-07-21 | 1.00″ | 1 |
| 2025-05-24 | 1.00″ | 1 |
| 2024-05-25 | 2.00″ | 3 |
How to read the Harper 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 2.75 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: Kingman County (49 hail days), Sumner County (57) and Barber County (40). Every one of them takes more hail than Harper County.
Kingman County · Sumner County · Barber County
Back to the Kansas hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Harper County, Kansas only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.