I immediately regret this decision.

Helena, Mont. -- An earthquake measuring a magnitude 5.6 struck southwestern Montana on Monday night, rattling windows, nerves and buildings, but there were no immediate reports of any serious damage or injuries.

The U.S. Geological Survey said the earthquake was centered about 13 miles northwest of Dillon, but residents across a wide swath of Montana, Idaho and
Washington reported feeling the temblor at about 10:10 p.m.

Reports came in from as far away as Great Falls, more than 200 miles to the north, and Billings, 250 miles to the east. Some residents reported two distinct tremors, several seconds apart, lasting about eight to 10 seconds.