Thomas County, Kansas Hail Map & History
Thomas County was hit as recently as 2026-07-01, 75 days ago. Thomas County is hit in most years, and usually several times over. The largest stone on record here is 4.25 inches and 4.2 times the National Weather Service's 1 inch severe criterion, reported on 2010-07-12 near Colby.
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 2026-07-01, around Gem. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Thomas 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 Thomas County
NOAA's Storm Prediction Center has logged 77 separate hail days here since 2010 -- 4.5 a year over 17 years of record. Those days carry 191 separate reports between them, two or three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2017, with 8 hail days. The last five years track the long-run rate, with 21 days since 2022.
Roof-killing hail is routine here: 19 of the 77 days reached 2 inches or more, 25% of them, the last on 2026-07-01. Those big days do not follow the county's usual calendar: most of them fall in July, not May. 34 of the 77 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 Thomas County
Reports cluster nearest Colby -- 37 of the county's 77 hail days -- then Brewster (20), Levant (20), Mingo (12) and Menlo (9). That one town is named on 48% of them. Beyond those, NOAA names Gem, Rexford, Winona, Halford and Oakley on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Colby | 16 | 4.25″ |
| Brewster | 12 | 2.50″ |
| 4 N Colby | 9 | 2.75″ |
| Menlo | 7 | 2.75″ |
| 4 W Colby | 5 | 3.00″ |
When it hails in Thomas County
The season runs May through August: 67 of the 77 hail days on record fall in those 4 months (87%). May is the single busiest month, with 25 of them (32%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in April, September, October and November, outside that window. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| April | 5 |
| May | 25 |
| June | 13 |
| July | 16 |
| August | 13 |
| September | 2 |
| October | 2 |
| November | 1 |
Recent Thomas County hail days
That day put 3 reports on the map, the biggest 2 inches near Gem. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-01 | 2.00″ | 3 |
| 2026-06-21 | 1.00″ | 1 |
| 2026-05-17 | 1.00″ | 1 |
| 2026-05-16 | 1.00″ | 2 |
| 2025-08-29 | 1.50″ | 1 |
| 2025-07-19 | 1.00″ | 1 |
| 2025-07-06 | 1.00″ | 2 |
| 2025-06-19 | 1.25″ | 3 |
How to read the Thomas 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 4.25 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: Logan County (83 hail days), Rawlins County (79) and Sheridan County (55). Thomas County sits in between.
Logan County · Rawlins County · Sheridan 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, Thomas County, Kansas only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.