with between 140 to 170 reported earthquakes @ mag 6 to 6.9 each year over the last decade what the hell is unusual?

-1 from your list since over 6.9 falls into another catergory and you have 6 quakes in jan thus far within that range

taking a average of 150 for the year that means another 6 to 7 of that mag this month is just the natural pattern