A 2.4-magnitude earthquake hit parts of Girard and the North Side of Youngstown about 6:25 a.m. Saturday.
The U.S. Geological Survey said the quake was centered near the D & L Energy Inc. brine injection well that is being studied as the possible culprit to the cluster of minor earthquakes that have plagued the area since last March, according to Tribune news partner WYTV.
The Ohio Department of Natural Resources, which regulates brine injection wells, has said no proof yet exists linking the well to the quakes, but is eyeing the plugging procedure as a precaution.
According to data on the USGS website, the tremor was felt as far away as Canfield and could also be felt in Niles and Warren. There were no reports of damage or injuries.
Saturday's event is the latest in a series of small area earthquakes since March.
The first quakes of the year <u>were also the first earthquakes in historic times centered at Youngstown and in Mahoning County</u>
. According to the ODNR, on March 17 magnitude 2.1 and 2.6 quakes rattled the Youngstown and Austintown areas.
The ground went silent for a few months, but temblors have been felt at least once a month since August, according to ODNR. The strongest was a 2.7-magnitude quake in September; the weakest was the 2.1-magnitude March quake.
2011 Mahoning Valley earthquakes:
March 17: Magnitude 2.1 and 2.6
Aug. 22: Magnitude 2.2
Aug. 25: Magnitude 2.4
Sept. 2: Magnitude 2.2
Sept. 26: Magnitude 2.6
Sept 29: Magnitude 2.7
Oct. 20: Magnitude 2.3
Nov. 25: Magnitude 2.2
Dec. 24: Magnitude 2.4
Source: Ohio Department of Natural Resources