Hail and tornadoes in Big Horn County, WY

Since January 2021, radar estimated hail somewhere in Big Horn County, WY on 50 days. The biggest estimate: 2 in or larger (hen egg), on Sat, Oct 11, 2025. Hail was reported to the National Weather Service inside the county on 3 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since January 2021

1 inch or larger

days, estimated or reported

Largest radar estimate

2+ in

Sat, Oct 11, 2025

Largest reported

1.25 in

Fri, May 26, 2023

Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Radar-estimated hail on Sat, Oct 11, 2025 around the place, with the hail reported that day — Sat, Oct 11, 2025: radar-estimated hail around Big Horn County, WY, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 43 hail reports in Big Horn County, WY on 22 days, 5 of them 2 inches or larger. The largest: 2.5 in, near Greybull, on Fri, Aug 7, 2009.

By decade: 2000s: 21 · 2010s: 19 · 2020s: 3

Tornadoes since 1950

7 tornadoes have touched Big Horn County, WY since 1950, none of them rated F3/EF3 or stronger.

Strongest

Mon, Jun 1, 2009 · EF1 · 0.36 mi long, 35 yd wide · near Rairden
Mon, Jun 12, 2017 · EF0 · 3.14 mi long, 30 yd wide · near Winchester
Sat, May 24, 2014 · EF0 · 0.77 mi long, 20 yd wide · near Cowley Airport
Thu, Aug 12, 2010 · EF0 · 2.44 mi long, 30 yd wide · near Emblem
Wed, Jun 1, 2005 · F0 · 0.5 mi long, 30 yd wide · near Byron

Most recent

Mon, Jun 12, 2017 · EF0 · 3.14 mi long, 30 yd wide · near Winchester
Sat, May 24, 2014 · EF0 · 0.77 mi long, 20 yd wide · near Cowley Airport
Thu, Aug 12, 2010 · EF0 · 2.44 mi long, 30 yd wide · near Emblem
Mon, Jun 1, 2009 · EF1 · 0.36 mi long, 35 yd wide · near Rairden
Wed, Jun 1, 2005 · F0 · 10 mi long, 20 yd wide · near Burlington
Wed, Jun 1, 2005 · F0 · 4 mi long, 30 yd wide · near Lovell
Wed, Jun 1, 2005 · F0 · 0.5 mi long, 30 yd wide · near Byron

By decade: 2000s: 4 · 2010s: 3

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

Thu, Jul 16, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 14, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 8, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 7, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 7, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Oct 11, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Fri, Sep 12, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 31, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 30, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 29, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 18, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 14, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 5, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 21, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jun 15, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 1, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, May 11, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Apr 21, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Sep 12, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 19, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 22, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 20, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 17, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jul 12, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, May 13, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Sep 9, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jul 22, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 6, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 1, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 19, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Mon, Jun 12, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 9, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 8, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jun 7, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 5, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, May 26, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1.25 in (5 SW BYRON, WY)
Thu, May 25, 2023
Reported in the county
- 1 in (8 NW GREYBULL, WY)
Tue, Jan 10, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, Sep 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 26, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 24, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jul 16, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 6, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 4, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Fri, Jun 24, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, May 17, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (3 N BASIN, WY)
Sat, Apr 9, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Aug 4, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jul 1, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, May 7, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Big Horn County, WY now →Get warned before the next storm →

Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.