Fireballs
Eight witnesses near the Mason Dixon Line reported delayed boom sounds a few moments after the fall.
AMS Operations Manager Mike Hankey has been testing a new Raspberry PI based fireball camera system in his front yard for several months and this is certainly the best fireball video he has captured to date. The camera system is comprised of 6 cameras each pointing in a different direction. The light from the fireball was actually recorded on 5 of the 6 cameras. 2 cameras with slightly overlapping fields of view directly caught the meteor.
A facebook report said, "I saw it was in Grand Bay. A meteor that enter Mauritius skies. A like a firework in full speed at about 6: 07 pm today." Some observers say the phenomenon was accompanied by a loud noise. After fragmenting the bolide left a smoky trail.
According to Thierry, a Reunion Island resident, "I saw a kind of ball passing in the sky, it lasted about 7 seconds, with a very straight trajectory ... It was multicolored in fact, it was a large ball of mauve color, blue , with a white, yellow streak." About four minutes after seeing this phenomenon, Thierry describes hearing an explosion before experiencing a tremor.
Cometary nuclei are composed of an amalgamation of rock, dust, water ice, and frozen gases such as carbon dioxide, carbon monoxide, methane, and ammonia.Dangerous Close Cometary Encounters occur when:
As such, they are popularly described as "dirty snowballs" after Fred Whipple's model.
However, some comets may have a higher dust content, leading them to be called "icy dirtballs".
https://en.wikipedia.org/wiki/Comet
a) Comets collide with the Earth.
b) Comets pass directly between the Earth and the Sun.
In the second case the alignment exposes the Earth to a potential Cometary Double-Tap whereby:
1) The "gas tail" of the Comet is delivered directly into the Earth's upper atmosphere.
2) The "dust tail" of the Comet side-swipes the Earth with a debris train.
The first meteor fireball was recorded on the night of 11 September 2017 at 1:26 local time (23:26 universal time on September 10) and began at a height of about 80 km and ended at an altitude of around 30 km. It was recorded by the SMART Project framework from the astronomical observatories of La Hita (Toledo, Spain), Sevilla and Huelva.

The earth-grazing fireball was observed in numerous places around Iceland and was prominent on social media.
"Did anyone see that meteor above Reykjavik," one Icelander writes on Twitter and another writes, "In the middle of an ocean of Northern Lights we saw a shooting star right near us, it seems. Like a huge rocket, flying fast across Mount Esja," wrote another. A tourist writes that the Northern Lights display last night was overshadowed by the meteor. "It was so cool."
On Stjörnufræðivefurinn, Iceland's leading astronomy website it states that the phenomenon was a meteor and that people had seen it all across Iceland. In the North, in Reykjavik and in South Iceland.
The celestial event occurs when a number of meteors are seen to radiate from one point in the night sky.
Joe Martin saw the event from Bushland Beach at 7.06pm.
"I saw four or five lights that looked just like shooting stars or fireworks heading towards the ground,'' he said.
"Three of them got very bright, then I saw a flash. Then they were gone.
The burning object can be seen plummeting towards residential buildings.
The fireball, which crossed the region's skies from south to north, was witnessed by "thousands of people in Krasnodar," regional daily KP Kuban wrote.
People in other cities in the region, including Anapa and Sochi, also claim to have seen a "huge flash" in the skies around 9:40pm local time, according to the newspaper.

A tsunami was believed to have hit Britain in the 11th century causing destruction.
The disaster is said to have submerged large numbers of villages and was mentioned in 1014 AD in the Anglo Saxon Chronicles, but there are doubts over whether the event really occurred.
Researchers say they have now found likely tsunami deposits at Marazion Marsh, Cornwall, and Chesil Beach, Dorset, from roughly the same time period that suggest the story is more than a legend.
Geographer Dr Phill Teasdale, from the University of Brighton, said: "If we can investigate this a bit more, we can talk about the geographical spread of the impact.
"Analysing the depth of the tsunami deposit can tell us whether that postulated asteroid impact in the Atlantic ocean was a reality."
Tashia is in Nelson. She says she was tucking her son into bed before she saw the sky light up.
"We felt it. It was way more intense than thunder, but not quite like an earthquake. It rattled the windows."
Laureen was in Langley.
"It looked like a ball of fire. It was quite large. It came streaking through the sky and just kept going. I said 'that's going to hit something'."
People from as far away as Calgary have also noticed the phenomenon.
We still don't know exactly what it was, or where it landed.
Comment: The American Meteor Society (AMS) has received over 300 reports about a fireball seen over Alberta, MT, ID, WA, British Columbia, Saskatchewan, Washington, Idaho and Montana on Tuesday, September 5th 2017 around 05:07 UT. A sonic boom was reported by numerous people with a house shaking recorded in at least one report.












Comment: A few days ago an unidentified fireball was filmed over the city of Krasnodar in southern Russia.