518! That’s the number of earthquakes measuring 3.0 or higher in magnitude which have occurred in Oklahoma since the start of this year. A 5.0 magnitude quake struck near Cushing last week and a 5.8 magnitude tremor struck in September. Luckily it’s been almost a year since one occurred in North Texas. What’s interesting to think about is what would happen across North Texas if a quake with a magnitude of 5.8 struck here!