M1.9 earthquake 15 km NW of Okarche, Oklahoma

A magnitude 1.9 earthquake struck 15 km NW of Okarche, Oklahoma on Thu, Aug 1, 2019, 9:47 PM CDT (02:47 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.5 14 km WSW of Kingfisher, Oklahoma. 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
1.9	ML, local (Richter)	Oklahoma Geological Survey	Preferred · Confirmed · ±0.18 · 21 stations
1.6	mb_Lg, Lg-wave body	USGS National Earthquake Information Center	Reviewed · ±0.228 · 5 stations

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 184 in the 30 days before it.

The first 60 of at least 200.

From the USGS Earthquake Hazards Program and its partner networks, event ok2019ozjr (also filed as us60004z4v). Read Thu, Oct 1, 2026, 11:13 AM UTC.