Reports Report 1144l (Event 1144-2018)

Observer
Name Mary M
Experience Level 3/5
Remarks I let the dogs out just prior to the event. It was very dark and I was at the door window looking south when the yard lit up for about 2-3 seconds in bright green. Moments after, I heard a boom that sounded like thunder in a completely clear sky. Folks 12 miles to my west (Estes Park, CO) are also reporting it- feeling their homes shake and hearing an explosion. I did not see it directly, but my perception was an east to west trajectory. I live at the bottom of a steep canyon, Big Thompson Canyon on Hwy 34. It had to be directly overhead to light things up like it did, no long shadows.
Location
Address Drake, CO
Latitude 40° 25' 47.03'' N (40.429731°)
Longitude 105° 19' 42.93'' W (-105.328592°)
Elevation 1913.52478m
Time and Duration
Local Date & Time 2018-03-24 04:21 MDT
UT Date & Time 2018-03-24 10:21 UT
Duration ≈3.5s
Direction
Moving direction From up left to down right
Descent Angle 92°
Moving
Facing azimuth -
First azimuth 90°
First elevation 90°
Last azimuth 90°
Last elevation 90°
Brightness and color
Stellar Magnitude -20
Color Green
Concurrent Sound
Observation Unknown
Remarks -
Delayed Sound
Observation Yes
Remarks Maybe a minute after the flash, I heard what sounded like thunder- a distant boom.
Persistent train
Observation Unknown
Duration -
Length -
Remarks -
Terminal flash
Observation Unknown
Remarks -
Fragmentation
Observation Unknown
Remarks -