text:  A 1.8 magnitude earthquake shook Montgomery County Monday night. It happened just before 11.30 p.m. According to the U.S. Geological Survey, the earthquake was centered in Spencerville near the Howard County border. People in Columbia reported feeling the earthquake. This is the third earthquake for Maryland in 2024. I'm Jimmy Tee on Mid-Maryland's Radio News Center, 930 WFMD.