M1.5 earthquake 16 km WSW of Rafter J Ranch, Wyoming

A magnitude 1.5 earthquake struck 16 km WSW of Rafter J Ranch, Wyoming on Mon, Jul 2, 2018, 7:36 PM MDT (01:36 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.1 11 km WNW of Hoback, Wyoming. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
1.5	ML, local (Richter)	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.097 · 14 stations
1.58	ML, local (Richter)	Montana Bureau of Mines and Geology	Final · ±0.243 · 7 stations

The USGS’s account of the effects of this earthquake.

Felt at Wilson.

From the USGS event page for us2000fvcn. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 62 in the 60 days after this one and 20 in the 30 days before it.

The first 60 of 62.

From the USGS Earthquake Hazards Program and its partner networks, event us2000fvcn (also filed as mb80300369). Read Fri, Oct 2, 2026, 12:40 AM UTC.