The map shows quakes of M1.5 and up from the last 90 days, the 4 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.

past hourpast daypast weekearlier in the last 90 daysbiggest on recordbigger dot = stronger quake

0last 24 hours

0last 7 days

0last 30 days

1last 12 months

M3.8largest in 10 years

In the last 30 days, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Mills. The biggest quake on record near Mills — records go back to 1980 — was the M5.3 of Oct 18, 1984, 15:30 UTC: 29 km W of Esterbrook, Wyoming.

Biggest on record (since 1980) · M5.3 in 1984Big enough to feel last year (M4+) · 0

Latest earthquakes near Mills

Mag	Location	Local time	Depth	Distance
M3.0	12 km SSE of Edgerton, Wyoming	Feb 12, 2026, 12:54 AM	10 km	53 km NNE
M3.3	27 km E of Bairoil, Wyoming	Aug 25, 2022, 08:10 PM	5 km	98 km SW
M3.8	12 km NW of Rolling Hills, Wyoming	Aug 01, 2021, 09:50 PM	10 km	39 km ENE
M3.2	16 km NW of Rolling Hills, Wyoming	Jul 22, 2020, 01:11 PM	34 km	34 km ENE
M3.2	16 km S of Casper Mountain, Wyoming	Aug 22, 2016, 04:53 AM	5 km	29 km SSE
M3.1	18 km SSW of Midwest, Wyoming	Nov 30, 2015, 08:16 AM	5 km	47 km N
M4.2	21 km E of Antelope Hills, Wyoming	Oct 19, 1996, 07:27 AM	5 km	37 km NE
M4.5	36 km W of Esterbrook, Wyoming	Oct 18, 1984, 09:57 AM	33 km	70 km SE
M5.3	29 km W of Esterbrook, Wyoming	Oct 18, 1984, 09:30 AM	33 km	74 km SE
M4.0	36 km WSW of Esterbrook, Wyoming	Feb 13, 1983, 06:44 AM	5 km	85 km SE

Earthquakes per year near Mills (M3.0 and up, within 100 km)

M3.0–3.9 M4.0+

Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.

What the last year looked like near Mills

How big they were

M1.5–2.00 (0%)

M2.0–3.00 (0%)

M3.0–4.01 (100%)

M4.0–5.00 (0%)

M5.0+0 (0%)

How deep they were

0–10 km1 (100%)

10–30 km0 (0%)

30–70 km0 (0%)

70+ km0 (0%)

Every quake of M1.5 or bigger within 100 km over the last year — 1 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.

The 4 biggest earthquakes on record near Mills (M4.0 and up, since 1980)

Mag	Location	Date (UTC)	Distance
M5.3	29 km W of Esterbrook, Wyoming	Oct 18, 1984, 15:30 UTC	74 km
M4.5	36 km W of Esterbrook, Wyoming	Oct 18, 1984, 15:57 UTC	70 km
M4.2	21 km E of Antelope Hills, Wyoming	Oct 19, 1996, 13:27 UTC	37 km
M4.0	36 km WSW of Esterbrook, Wyoming	Feb 13, 1983, 13:44 UTC	85 km

Nearby places

Casper, WY (5 km) · Evansville, WY (8 km) · Bar Nunn, WY (8 km) · Glenrock, WY (40 km)

USGS data fetched Nov 03, 2026, 15:45 UTC · page built Nov 03, 2026, 15:45 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.