Hi,

I also have a high reading on my tester of 600. Hasn't been this high since shortly after the Hector Mine quake for a moderate aftershock.

Many people I know are also reporting that there is high electrical conductivity occurring when touching just about anything but especially when opening and closing car doors. The transformer outside my house has had a good hum coming from it too, this occurs when expecting a quake locally.

Stay safe,