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Entries in Montana earthquakes (10)


Sizable quake shakes Northwest Montana

USGS map(THOMPSON FALLS)- Tuesday's earthquake that hit Northwest Montana was one of the strongest in the western half of the state in several years. 

USGS reports the quake which struck around 3:30 was centered northeast of Thompson Falls and registered 4.0 magnitude. The quake was also fairly shallow, so it was felt over a widespread area. People in the Lower Clark Fork Valley reported feeling the quake, with additional reports spread all through Mineral and Sanders counties. 

By comparison, most of the quakes in Western Montana in the past three or four years have usually been closer to 3.0

There were no reports of any damage. 


Weekend quake centered near Lincoln

USGS map shows area where quake was most likely felt(BUTTE)- Seismologists say a small earthquake that hit West Central Montana Saturday night was centered just outside of Lincoln. 

USGS reports the quake was a 3.6 magnitude and hit around 10:42 Saturday evening. That makes it one of the strongest quakes in Western Montana in several months. 

The quake's epicenter was 9-miles outside Lincoln, or 32-miles west northwest of Helena. The earthquake was fairly deep, at just over 10-miles below the Earth's surface, so that limited the amount of area where people might have felt the quake. Maps show it would have probably been noticed most in the lightly populated areas immediately north and west of Lincoln. 



Another small quake shakes NW Montana

USGS map shows extent of quake's projected "shake" (LIBBY)- Another small earthquake shakes Northwest Montana, the second time in less than a month that the Libby area has felt the earth move.

The US Geological Survey reports the magnitude 3.5 quake hit just before 7 o'clock Tuesday evening. Preliminary indications were that the quake's epicenter was 27-miles southeast of Libby, 39-miles west of Kalispell. That would put it close to Happy's Inn and not far from the Thompson Lakes. 

The quake was quite shallow, just over 1-mile below the surface. 

That puts it in the same general area as a 2.5 quake that happened on May 3rd. 


Moderate quake felt in Western Montana 

USGS map(LINCOLN)- The U.S. Geologicial Survey says a small quake that shook the earth near Lincoln this morning registered a magnitude of 3.5.

The Montana Bureau of Mines and Geology recorded the quake at 8:41 this morning 4-miles east southeast of Lincoln. That puts the epicenter 35-miles northwest of Helena in Lewis and Clark County. 

The quake was at moderate depth of 9-point-9 miles beneath the surface. 

Geologists are still checking into the quake but say it may have been felt around Helena and as far west as Seeley Lake. 


Quake hits near Seeley Lake

USGS map shows quake's epicenter NE of Seeley Lake(SEELEY LAKE)- A relatively strong quake rumbled underneath the Bob Marshall Wilderness late Sunday night. 

According to the initial computer-generated data, the quake measured a magnitude 3.2 and was centered between Alloy and Black Mountain, which is 21-miles northeast of Seeley Lake. That’s along the headwaters of the South Fork of the Flathead in a very remote area.

The quake happened just a few minutes after 10 p.m. and was quite deep, just over 9-miles beneath the surface of the Earth.

A handful of people reported to the U.S. Geological Survey that they had felt the quake in the Seeley Lake area, with another report coming in from Ovando, which is about 24-miles from the epicenter.

The quake was the first sizable quake in Western Montana since last winter.