Maryland earthquake felt in Bethesda, across DC region

UPDATE - 3:00 AM, August 4, 2021: The USGS now reports that the earthquake occurred at a depth of 3.4 kilometers. Latest USGS map pinpoints Clarksville, MD as epicenter, although it has not been officially named as such yet.

A 2.1 magnitude earthquake was felt in Bethesda, Rockville, Silver Spring, Derwood, and other parts of Montgomery County; Prince George's County, and Howard County at 2:11 AM this morning. The sound was audible here in Montgomery County, and was more noticeable than the shaking of the ground. According to the United States Geological Survey, the epicenter of the earthquake was 3 km from Highland, Maryland.

Earthquake rattles Bethesda

An earthquake 10km ENE of Dover, Delaware was felt here in Bethesda just before 5:00 PM this afternoon. The earthquake's magnitude has been estimated to have been between 4.1 and 5.06. At the moment, it is being termed a 4.1, after several revisions. The quake lasted about 6-10 seconds here in Bethesda, causing minor rattling of structures and objects.

A 2011 earthquake felt here lasted longer, and was significantly stronger. It was a 5.8 centered near Mineral, Virginia. Now, we can expect two aftershocks, based on my experience in the 2011 Virginia earthquake. Listen out, because they were missed by many in Bethesda that year.