The most recent reported hail day was 2024-05-26 -- 2 years ago, with nothing reported since. Nowata County is hit in about half the years on record. 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 2014-06-05 near Delaware.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Oklahoma. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2024-05-26, around Delaware. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Nowata County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
Get free access Check an addressOur US-based call center calls the homeowners in this storm and books roof inspections straight onto your calendar. You work the storm; we fill the schedule. We dial -- you do not have to knock a single door.
See call-center options ->NOAA's Storm Prediction Center has logged 15 separate hail days here since 2010 -- 0.9 a year over 17 years of record. They carry 20 reports in total: most hail days here are logged from a single spot. 9 of those 17 years produced none at all. One year dominates the record: 2011 alone produced 3 of the 15 days. The last five years have been quieter than the long run: 1 days since 2022, against 1.2 a year before that.
Roof-killing hail is routine here: 4 of the 15 days reached 2 inches or more, 27% of them, the last on 2024-05-26. Those big days do not follow the county's usual calendar: most of them fall in May, not April. 6 of the 15 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Oklahoma, see the Oklahoma hail map and history.
Reports cluster nearest Nowata -- 6 of the county's 15 hail days -- then South Coffeyville (3), Delaware (2) and Lenapah (2). That one town is named on 40% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| South Coffeyville | 3 | 1.00″ |
| 3 N Nowata | 1 | 2.75″ |
| Delaware | 1 | 2.75″ |
| 7 Ne Nowata | 1 | 2.50″ |
| 6 E Delaware | 1 | 2.00″ |
The season runs March through July: 12 of the 15 hail days on record fall in those 5 months (80%). April is the single busiest month, with 4 of them (27%). That peak sits inside the window rather than at either end. Hail has also been reported in August, September and November, outside that window. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 4 |
| May | 3 |
| June | 3 |
| July | 1 |
| August | 1 |
| September | 1 |
| November | 1 |
That day put 1 report on the map, the biggest 2 inches near Delaware. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2024-05-26 | 2.00″ | 1 |
| 2020-11-24 | 1.50″ | 1 |
| 2020-07-11 | 1.00″ | 1 |
| 2019-06-01 | 1.75″ | 1 |
| 2019-03-29 | 1.00″ | 1 |
| 2017-08-10 | 2.00″ | 1 |
| 2017-05-27 | 1.75″ | 3 |
| 2016-05-09 | 1.00″ | 1 |
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, over the state line included: Washington County (40 hail days), Craig County (23), Rogers County (44) and Montgomery County, Kansas (52). Every one of them takes more hail than Nowata County.
Washington County · Craig County · Rogers County · Montgomery County, Kansas
Back to the Oklahoma hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Nowata County, Oklahoma only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.