Earthquake

[RaysZ71]

If it's not above 5, it's not an earthquake in my book. I've been in 7 and 8, that's an earthquake. Makes me laugh when a 2.8 makes the news. I've felt aftershocks stronger then 4.

 

[Danny Tanner]

swamp gas.

or a sonic boom

Weather balloon.

 

[elcaBob]

There was a 2.7 last night at 8:20 local time in that area.