A 4.3 earthquake hit the Mt. St. Helens area about 10:35 a.m. Monday, followed by two more minutes later at magnitude 2.5 and 2.3.
The first quake was reported initially as a 3.3 magnitude quake.
USGS data on the quake
The 4.3 quake happened at 10:35 a.m. and 25 seconds about six miles north and northwest of the volcano.
It was followed by a 2.5 quake at 10:37 and 45 seconds about seven miles north and northwest of the volcano.
A third quake of 2.3 was recorded at 11:35 and 8 seconds about six miles north and northwest of the volanco.
Read more:
http://www.kgw.com/news/local/33-quake-hits-Mt-St-Helens-around-1030-am-116172814.html
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