Hail History

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Hail history for Harper County, OK

Last hail in the countyJun 16, 20262.75 in (baseball)
Hail days, last 12 months3
Largest hail since 20064.25 inMar 2, 2008
Hail days since 200656
Days with hail 1 inch or larger46
Tornadoes in the county13
Damaging wind reports in the county80

120 hail reports in Harper County since 2006 on 56 days. The largest stones measured 4.25 in on Mar 2, 2008.

Recent hail in Harper County

DateHail sizeWhereSource
Jun 16, 20262.75 in
baseball		Laverne, Rosston
4 hail reports		NOAA Storm Events
Mar 10, 20260.75 in
penny		May
1 hail report		NOAA Storm Events
Mar 4, 20261 in
quarter		Buffalo
1 hail report		NOAA Storm Events
Sep 17, 20251.75 in
golf ball		Selman
1 hail report		NOAA Storm Events
Sep 8, 20252.5 in
tennis ball		Rosston, Laverne
3 hail reports		NOAA Storm Events
May 18, 20252.75 in
baseball		Rosston, Laverne
6 hail reports		NOAA Storm Events
Apr 24, 20252.25 inSelman, Buffalo
3 hail reports		NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Harper County by year

30680770840911031131231321421511621721821922012122212324425326

When hail season peaks in Harper County

JanFeb4Mar9Apr20May11Jun3Jul3Aug4Sep1Oct1NovDec

Damaging thunderstorm winds in Harper County

80 reports of damaging thunderstorm wind in Harper County since 2006, on 47 days. The strongest measured gust was 86 mph on Sep 17, 2021.

DateStrongest gustWhereSource
Jun 27, 202660 mph, estimatedMay
1 wind report		NOAA Storm Events
Jun 21, 202672 mph, measuredBuffalo
6 wind reports		NOAA Storm Events
Aug 17, 202581 mph, measuredBuffalo
1 wind report		NOAA Storm Events
Aug 3, 202558 mph, measuredLaverne
1 wind report		NOAA Storm Events
Jun 7, 202571 mph, measuredBuffalo
2 wind reports		NOAA Storm Events
Aug 25, 202460 mph, estimatedLaverne
1 wind report		NOAA Storm Events
Aug 14, 202459 mph, measuredBuffalo
1 wind report		NOAA Storm Events
Jul 16, 202464 mph, measuredBuffalo
3 wind reports		NOAA Storm Events
Jun 13, 202459 mph, measuredBuffalo
1 wind report		NOAA Storm Events
Aug 5, 202379 mph, measuredBuffalo
2 wind reports		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Harper County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).