The most recent reported hail day was 2026-03-15, 138 days ago. Union 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 2025-05-17 near Strong.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Arkansas. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-03-15, around El Dorado. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Union 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 26 separate hail days here since 2010 -- 1.5 a year over 17 years of record. Those days carry 48 separate reports between them, two or three on a typical one. 4 of those 17 years produced none at all. The busiest single year was 2025, with 4 hail days. The last five years have run hotter than the long-run rate: 11 days since 2022, against 1.2 a year before that.
4 of the 26 days reached 2 inches or more -- 15%, or about one hail day in 6, the last on 2025-05-17. Those big days do not follow the county's usual calendar: most of them fall in March, not April. 7 of the 26 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Arkansas, see the Arkansas hail map and history.
Reports cluster nearest El Dorado -- 18 of the county's 26 hail days -- then Strong (5), Smackover (3) and Huttig (3). That one town is named on 69% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| El Dorado | 5 | 1.25″ |
| Strong | 4 | 1.75″ |
| Smackover | 2 | 2.00″ |
| Huttig | 2 | 1.75″ |
| 1 NE El Dorado | 2 | 1.25″ |
The season runs March through May: 21 of the 26 hail days on record fall in those 3 months (81%). April is the single busiest month, with 9 of them (35%). That peak sits inside the window rather than at either end. Hail has also been reported in January, February, June and November, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| January | 1 |
| February | 1 |
| March | 7 |
| April | 9 |
| May | 5 |
| June | 2 |
| November | 1 |
That day put 3 reports on the map, the biggest 1.75 inches near El Dorado. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-03-15 | 1.75″ | 3 |
| 2025-05-17 | 2.00″ | 2 |
| 2025-05-06 | 1.00″ | 1 |
| 2025-04-26 | 1.00″ | 1 |
| 2025-03-23 | 1.00″ | 1 |
| 2024-05-24 | 1.25″ | 1 |
| 2023-05-08 | 1.00″ | 1 |
| 2023-04-15 | 1.25″ | 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 and parishes with a page of their own, over the state line included: Ouachita County (17 hail days), Columbia County (14), Ashley County (27), Union Parish, Louisiana (29) and Claiborne Parish, Louisiana (14). Union County sits in between.
Ouachita County · Columbia County · Ashley County · Union Parish, Louisiana · Claiborne Parish, Louisiana
Back to the Arkansas hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Union County, Arkansas only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.