The Lincoln County Emergency Management Agency is asking if any local people felt an earthquake reported in Nobleboro Sunday.
In a Facebook post, the agency noted that the 1.8 magnitude earthquake was detected with an epicenter in the area of East Pond Road around 7:30 a.m. Sunday.
The quake comes on the heels of a particularly busy June in terms of seismic activity in Maine, including a one-week period in which there were four minor earthquakes of magnitudes between 1.3 and 1.7 in Lincoln and Livermore, respectively.
According to Michigan Technological University, earthquakes under 2.5 in magnitude are “usually not felt, but can be recorded by a seismograph,” and about 900,000 such quakes are estimated to take place around the world every year.
The Maine Geological Survey reports that “in a typical year, Maine has several small earthquakes” but that scientists expect to see only about five earthquakes of 4.6-magnitude or larger each century.
The largest earthquake ever recorded in Maine, measuring a 5.9 magnitude, was centered in the Pembroke-Eastport area on March 21, 1904, according to U.S. Geological Survey data.
In October 2012, an earthquake which registered a 4.0 on the Richter scale was recorded with an epicenter of Hollis. The Richter scale is no longer commonly used to measure quakes, and scientists now use the moment magnitude scale.