Hail History

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Hail history for Slope County, ND

Last hail in the countyAug 11, 20262 in (hen egg)
Hail days, last 12 months1
Largest hail since 20063.75 inJun 30, 2015
Hail days since 200636
Days with hail 1 inch or larger28
Tornadoes in the county2
Damaging wind reports in the county45

58 hail reports in Slope County since 2006 on 36 days. The largest stones measured 3.75 in on Jun 30, 2015.

Recent hail in Slope County

DateHail sizeWhereSource
Aug 11, 20262 in
hen egg		Amidon, Rhame
3 hail reports		NWS storm report (preliminary)
Jul 20, 20251 in
quarter		Amidon
1 hail report		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 Slope County by year

1061070820921041111231311421541631721831912022112223124125126

When hail season peaks in Slope County

JanFebMarApr1May11Jun16Jul6Aug2SepOctNovDec

Damaging thunderstorm winds in Slope County

45 reports of damaging thunderstorm wind in Slope County since 2006, on 28 days. The strongest measured gust was 85 mph on Jul 13, 2024.

DateStrongest gustWhereSource
Jun 27, 202668 mph, measuredAmidon
2 wind reports		NOAA Storm Events
Jun 7, 202660 mph, measuredAmidon
2 wind reports		NOAA Storm Events
Aug 7, 202572 mph, measuredMarmarth, Amidon
4 wind reports		NOAA Storm Events
Jul 27, 202560 mph, measuredAmidon
1 wind report		NOAA Storm Events
Jun 20, 202560 mph, estimatedAmidon
1 wind report		NOAA Storm Events
Jun 16, 202559 mph, measuredAmidon
1 wind report		NOAA Storm Events
Jul 13, 202485 mph, measuredAmidon
1 wind report		NOAA Storm Events
Jun 27, 202481 mph, measuredAmidon, Marmarth
3 wind reports		NOAA Storm Events
Jun 22, 202469 mph, measuredAmidon
2 wind reports		NOAA Storm Events
Jul 29, 202359 mph, measuredAmidon
1 wind report		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 Slope 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).