Cass County was hit as recently as 2026-06-10, 51 days ago. Cass County is hit in most years, and usually several times over. 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 2025-04-17 near Greenwood.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Nebraska. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-06-10, around Union. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Cass 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 50 separate hail days here since 2010 -- 2.9 a year over 17 years of record. Those days carry 101 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2024, with 5 hail days. The last five years track the long-run rate, with 16 days since 2022.
7 of the 50 days reached 2 inches or more -- 14%, or about one hail day in 7, the last on 2025-04-17. Those big days do not follow the county's usual calendar: most of them fall in June, not May. 20 of the 50 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Nebraska, see the Nebraska hail map and history.
Reports cluster nearest Plattsmouth -- 13 of the county's 50 hail days -- then Union (8), Eagle (7), Murray (7) and Greenwood (6). Beyond those, NOAA names Manley, Avoca, Elmwood, Weeping Water, Cedar Creek, Nehawka, Alvo, Murdock and Louisville on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Plattsmouth | 9 | 1.75″ |
| Avoca | 6 | 1.75″ |
| Eagle | 4 | 2.75″ |
| Greenwood | 4 | 2.75″ |
| Weeping Water | 4 | 1.75″ |
The season runs April through August: 40 of the 50 hail days on record fall in those 5 months (80%). May is the single busiest month, with 12 of them (24%). That peak sits inside the window rather than at either end. Hail has also been reported in March, September, October and November, outside that window. January, February and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| March | 2 |
| April | 8 |
| May | 12 |
| June | 12 |
| July | 1 |
| August | 7 |
| September | 4 |
| October | 3 |
| November | 1 |
That day put 1 report on the map, the biggest 1 inch near Union. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-10 | 1.00″ | 1 |
| 2026-05-17 | 1.00″ | 1 |
| 2026-05-15 | 1.00″ | 1 |
| 2025-04-17 | 2.75″ | 13 |
| 2024-10-30 | 1.00″ | 1 |
| 2024-06-25 | 1.00″ | 1 |
| 2024-06-12 | 1.75″ | 1 |
| 2024-05-21 | 2.50″ | 2 |
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: Sarpy County (40 hail days), Otoe County (39) and Douglas County (65). Cass County sits in between.
Sarpy County · Otoe County · Douglas County
Back to the Nebraska hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Cass County, Nebraska only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.