An earthquake that rocked Montana yesterday was felt by people across hundreds of miles. The 5.8 magnitude earthquake struck the western part of the state close to northwest Helena at 12:30 AM local time, but was felt by people in multiple states and even Canada. The quake was large enough to wake people up.
The recent Montana earthquake was shallow but was felt by people across a line over 500-miles-long from around Billings to Spokane, Washington. There weren’t any reports of injuries, according to Montana Public Radio, but people over a widespread area were awakened by the shaking. The earthquake was the strongest Montana has experienced in possibly over a decade – according to NPR a 5.6 magnitude earthquake struck in 2005.
Between 12:30 AM and 1:31 AM on July 6, a minimum of 10 measurable tremors struck Montana, and the last two had magnitudes of 3.9 and 4.4. The United States Geological Survey (USGS) said the earthquake “occurred as the result of shallow strike slip faulting along either a right-lateral, near vertical fault trending east-southeast, or on a left-lateral vertical fault striking north-northeast.”
The earthquake hit around 230 miles away from Yellowstone National Park, and as it was felt over such a wide area some people wondered if the Yellowstone supervolcano had become active. But the park service said the area typically has over 1,000 earthquakes yearly, and experts have said it is very unlikely a large eruption will occur in the next 1,000 to 10,000 years.
The earthquake may not have stemmed from the supervolcano but still rattled residents out of the routine of their daily lives. Volunteers pitched in to help clean up a local grocery store in Lincoln, the D&D Foodtown, which lost pickle jars and wine bottles – but assistant manager Ruth Baker said all of the eggs in the store survived.