Plainfield — Two small earthquakes rattled the town this morning, bringing to 10 the number of tremors since Thursday.

The two quakes were measured at 1.0 and 1.7 on the Richter scale, well below the 3.1-level quake that shook the town Monday morning. Residents described it as sounding like an explosion.

“We’re still getting calls from people, mostly just making sure that that’s what they’re hearing and not something else,” said Police Capt. Mario Arriaga, whose department fielded as many as 200 calls the day of the strongest quake. Residents are paying close attention to the quakes, he said, but staying calm. A few residents have reported minimal damage such as cracks in Sheetrock or foundations, he said.

In response to the earthquakes, the town has scheduled a public information session for 6:30 p.m. Friday at the high school. First Selectman Paul Sweet said Alan Kafka, director of the Weston Observatory at Boston College, will give a presentation about earthquakes in New England, and officials from the state Office of Emergency Management & Homeland Security will be on hand to answer questions and offer advice to residents. The observatory is the leading agency tracking earthquakes in New England and eastern Canada.

“We’re not in any way getting panicked about this,” Sweet said. “But it seems like they’re happening every morning. People just need someone to listen to them.”

The earthquake “swarm” began on Thursday, and there’s no telling how much longer it will persist, John Ebel, senior research scientist at the observatory, said today. During an earthquake swarm in Bar Harbor, Maine, in 2006 to 2007, he said, the town experienced 20 quakes over nine months. The strongest was a 4.2, which considered to be “at the threshold” for widespread minimal damage.

“There’s no consistent pattern in the way earthquakes happen,” Ebel said.

Scientists from the observatory set up four portable seismographs in Plainfield on Tuesday. The devices, he said, will collect data to enable the scientists to more accurately pinpoint the epicenter of future quakes than the regional seismographs that have thus far been registering the shaking.