A relatively weak earthquake rattled Ohio earlier today at 3:47 am, generating some reports to USGS’s “Did you feel it?” web-based earthquake reporting tool from residents who noted the shaking from the early-morning quake. Today’s earthquake happened right next to where an earthquake struck just last month, and didn’t happen far from where a series of earthquakes struck last September. A magnitude 3.6 earthquake struck here last August.
According to USGS, just outside of Madison northeast of Cleveland today, a magnitude 2.6 earthquake struck. The depth of the earthquake was 5 km which is more shallow than the 6.3 km deep quake that struck last month. While shaking was reported by people in the region, there were no reports of damage or injuries.
According to the Ohio Department of Natural Resources, Ohio has deployed a seismic network with 21 seismograph stations throughout the state that continuously monitor and record earthquake activity. The Ohio Seismic Network (OhioSeis) went online in January 1999, ending a five-year gap during which there was only one operating station in Ohio. Ohio has 24/7 monitoring and coverage by seismic stations with automatic detection, location and magnitude determination.
Earthquake activity in Ohio is not common. A magnitude 2.6 earthquake struck outside of Toledo in May. Before that, an earthquake hit on March 20 about 14 miles southwest of Gallipolis; it was a magnitude 2.3 event. On February 4, an even weaker magnitude 2.0 event struck near Athens. On January 23, an earthquake of the same magnitude, 2.0, struck near Fairport Harbor.
USGS says Ohio has experienced more than 160 felt earthquakes since 1776. Most of these events caused no damage or injuries. However, 15 Ohio earthquakes resulted in property damage and some minor injuries. The largest historic earthquake in the state occurred in 1937. The 1936 event had an estimated magnitude of 5.4 and caused considerable damage in the town of Anna and in several other western Ohio communities.
