"A team of Diglett triplets. It triggers huge earthquakes by burrowing 60 miles underground."
by burrowing 60 miles underground dugtrio causes earthquakes.
60 miles is 96,5606km
It's stated to be a HUGE earthquake. huge means somewhere along the lines of strong and major which means between mag 6 and mag 8.
i will take mag 6,7, and 8 at distance for this.
(Magnitude at distance) + 1.1644 + 0.0048*r = Richter Magnitude of Earthquake
Low-Ball:
6+1.1644+0.0048*96,5606=7.62789088
10^(1.5*7.62789088+4.8)=1.7451643e+16 joules or 2,390,057.3613 tons of tnt - Low 7-B
Mid-Ball:
7+1.1644+0.0048*96,5606=8.62789088
10^(1.5*8.62789088+4.8)=5.5186941e+17 joules or 119,502,868 tons of tnt - 7-A
High-Ball:
8+1.1644+0.0048*96,5606=9.62789088
10^(1.5*9.62789088+4.8)=1.7451643e+19 joules or 4,171,042,782.0268 tons of tnt - High 7-A