Published: 2008-04-07 08:43:29
Updated: 2008-04-07 08:43:29
Posted April 7, 2008 8:43 a.m. EDT
MIKE MOSS SAYS: Dawn, The time you noted was 10:30 am on Thursday Apr 3rd, 2008. A check of the USGS earthquake mapping system for the pas seven days shows no activity for our area, with the nearest tremors being very weak quakes in northwest Tennessee that occurred last Tuesday and again on Sunday.
Since you ruled out weather and trucks passing by, it seems possible the rumbles were from construction projects nearby (perhaps involving some blasting, given the repeated nature). That's just speculation, but the most reasonable one I can think of offhand.
For checking recent earthquake activity, see this address: