Many eyewitnesses in the Northeast and Canada reported seeing a bright fireball on March 7, 2021 at 5:38 PM Eastern Standard Time (2021 March 7 22:38 UTC). Analysis of their reports shows that the meteor occurred over northern Vermont, first appearing at a height of 51 miles (82 kilometers) above Mount Mansfield State Forest. Moving northeast at 42,000 miles per hour (19 kilometers per second), it traversed 30 miles (50 kilometers) through the upper atmosphere before burning up 31 miles (50 kilometers) above Beach Hill in Orleans County south of Newport.
Infrasound from the event was measured at 3 nearby stations; the amplitudes and durations of the signals put the fireball energy at 440 pounds (200 kilograms) of TNT. Combining this with the meteor's speed yields a mass of 10 pounds (4.5 kilograms) and a diameter around 6 inches (15 centimeters). There are numerous reports of sounds, caused by the pressure wave produced when the object fragmented. The pressure wave also coupled into the ground, registering on local seismic instruments.
The fireball was captured by a web camera at Burlington Airport and an EarthCam at Blue Mountain Lake in New York. Both of these cameras caught only a portion of the meteor's trail, rendering them unsuitable for analysis use.
|Date (UTC)||March 7, 2021|
|Size||10 lb or 6 in|
|Chicken Little Start Lat/Lon||+44.479, -72.651|
|Chicken Little End Lat/Lon||+44.678, -72.292|
|Chicken Little Altitude||81.6 km → 50.4 km ( 50.7 miles→ 31.3 miles)|
|Chicken Little Speed||18.7 km/s (41,800 mph)|