A swarm of 40 quakes has been recorded in east-central Idaho this week.
But scientists are not sure if this series of tremors could lead to something bigger.
Between Tuesday to Friday, about 40 micro-quakes have rattled east-central Idaho. Most have just gone unnoticed.
However, these shakings – up to M2.9 – have baffled scientists who try to understand the fault line that triggered a M5.0 earthquake back in January 2015.
Indeed they are not sure if these small tremors aren’t signs for a larger one. The largest recorded earthquake in Idaho – M6.9 quake that rattled the foot of Borah Peak in 1983 – hit exactly the same region.
Just in case… Get prepared.