We have a small quarry nearby and the sound was similar in echo and vibration. I heard it over the lawnmower with ear muffs on! I did not see any flashes however my focus was on the ground during the event.
Location
Address
Bella Vista, AR
Latitude
36° 29' 51.33'' N (36.497591°)
Longitude
94° 15' 25.78'' W (-94.25716°)
Elevation
349.056519m
Time and Duration
Local Date & Time
2019-08-11 17:10 CDT
UT Date & Time
2019-08-11 22:10 UT
Duration
≈1.5s
Direction
Moving direction
From down to up
Descent Angle
-
Moving
Facing azimuth
-
First azimuth
-
First elevation
-
Last azimuth
-
Last elevation
-
Brightness and color
Stellar Magnitude
-
Color
-
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
Yes
Remarks
Very loud boom. I was mowing the lawn with ear muffs on and heard and felt the vibration of the boom. Stopped the mower to listen for further noises. No additional sounds.
