Fireball report

Reports Report 588am (Event 588-2012)

Observer
Name	Keith
Experience Level	2/5
Remarks	It was absolutely amazing. I\'ve never seen or heard anything like it before and I really hope I get the privilege to witness an event like this one more time.

Location
Address	Truckee, CA
Latitude	39° 28' 29.63'' N (39.474896°)
Longitude	120° 6' 19.34'' W (-120.105372°)
Elevation	-

Time and Duration
Local Date & Time	2012-04-22 07:50 PDT
UT Date & Time	2012-04-22 14:50 UT
Duration	≈1.5s

Direction
Moving direction	From right to left
Descent Angle	270°

Moving
Facing azimuth	181.45685°
First azimuth	180.68093°
First elevation	45°
Last azimuth	189.57149°
Last elevation	44°

Brightness and color
Stellar Magnitude	1
Color	orange and yellow

Concurrent Sound
Observation	No
Remarks	-

Delayed Sound
Observation	Yes
Remarks	It occurred maybe 2-3 minutes after the fireballs and lasted maybe 20-30 seconds. I\'ve heard sonic booms from planes and dynamite explosions from quarries before and this was the loudest sound I ever heard. It rumbled like thunder the entire time however amplified many times and at the end you could hear it echoing along the shores of the lake. I didn\'t feel a concussion though.

Persistent train
Observation	Yes
Duration	99.99s
Length	4.5°
Remarks	I didn\'t really pay too much attention to the train, I was so exited to see the event. I looked at it maybe four or five times until I heard the sonic boom and after that I really did not think about the train anymore. From what I recall it looked like a vapor trail from a plane however narrower. It was also foggy on the lake and it was visible through the fog (not too dense).

Terminal flash
Observation	Unknown
Remarks	I\'m not sure if what I saw was a terminal flash. I saw two separate streaks over 1- 2 seconds, like giant sparklers streaking through the sky that disappeared. The two fireballs were going in the same direction but not 100% parallel, one had a slightly lower angle but not by much at all. They looked orange and yellow, I observed them through the fog and the sun was at my 9-10 o\'clock . When looking above the horizon the sky was foggy and the sun was peeking through certain areas from the east, it was clearly visible through the fog though. Photos of the lake and horizon maybe 15 minutes or so before the event are available showing the color of the sky. It was chilly that morning, around 32 degrees when we got on the water at 6:00. It warmed up some after that however my hands got cold so I put the phone away until after the events.

Terminal flash

Observation

Unknown

Remarks

I\'m not sure if what I saw was a terminal flash. I saw two separate streaks over 1- 2 seconds, like giant sparklers streaking through the sky that disappeared. The two fireballs were going in the same direction but not 100% parallel, one had a slightly lower angle but not by much at all. They looked orange and yellow, I observed them through the fog and the sun was at my 9-10 o\'clock . When looking above the horizon the sky was foggy and the sun was peeking through certain areas from the east, it was clearly visible through the fog though. Photos of the lake and horizon maybe 15 minutes or so before the event are available showing the color of the sky. It was chilly that morning, around 32 degrees when we got on the water at 6:00. It warmed up some after that however my hands got cold so I put the phone away until after the events.

Fragmentation
Observation	Yes
Remarks	-