300 tons of TNT, the energy NASA estimated was released when a meteor broke apart over northeastern Massachusetts and southeastern New Hampshire at about 2:06 p.m. EDT on Saturday. Satellite imagery from NOAA’s GOES-19 detected the flash and NASA posted the observation on X as the object fragmented roughly 40 miles, or 64 km, above the ground. The explosion produced a bright daytime fireball and a loud sonic boom that rattled houses and drew many calls to public safety agencies, though state police reported no linked emergencies. Scientists say the meteoroid was a natural object, not space hardware, and they have traced a likely debris corridor into Cape Cod Bay where any surviving fragments probably fell into about 100 feet of water.

Houses shook across eastern Massachusetts and southeastern New Hampshire as a pressure wave reached the ground, after the meteoroid broke apart high over New England.

The event came at 2:06 p.m. EDT on Saturday, and it produced a daytime fireball bright enough to be recorded by weather satellites, official statements show. NOAA’s GOES-19 satellite captured the flash and NASA made the detection public on X. The blast generated a sonic boom that was described by residents as a sudden, house-rattling bang and by some as a ground tremor.

The Massachusetts State Police said public safety agencies across eastern Massachusetts received numerous reports of an audible boom and ground tremors. The force added that, despite the volume of calls, officers had no known connected police or fire emergencies. Local accounts soundtrack the official record: windows shook, people stepped outside to see what had happened, and many reported a bright streak or flash across the daylight sky.

How scientists reconstructed the event

NASA scientists and other monitoring agencies combined satellite, infrasound and ground camera data to piece together the trajectory and fragmentation. Their reconstruction places the breakup at roughly 40 miles, or 64 km, altitude above northeastern Massachusetts and southeastern New Hampshire. That high-altitude disintegration produced the pressure waves that made the audible boom on the surface.

Using the available data, NASA estimated the energy released at breakup at about 300 tons of TNT. The agency said the object was a natural meteoroid rather than a re-entering piece of man-made space debris.

Mastheads

Jennifer Dooren, deputy news chief at NASA, told AFP that the fireball was not associated with any currently active meteor shower and was not the re-entry of a satellite or other space hardware.

Regional analysis placed the meteoroid’s entry speed at about 75,000 miles per hour. Trajectories calculated from camera and satellite records point to a projected fall zone in Cape Cod Bay. Water there's roughly 100 feet deep, and NASA said any surviving fragments were likely to have landed in water rather than on land.

Robert Lunsford, program monitor for the American Meteor Society, noted the rarity of the sight. He said daytime fireballs of this brightness are rare and that many who witnessed it would remember it for years.

The Boston Globe cited a meteorologist who estimated the object’s size at roughly 3 feet in diameter, and noted that meteoroids of that scale enter Earth’s atmosphere perhaps twice a year worldwide. That frequency, the Globe observed, makes a widely audible event comparatively uncommon.

Scientists are still refining the picture. Satellite signatures, infrasound traces and ground camera footage each capture a different element of the event. Combining those records creates a far better read on altitude, breakup pattern and likely debris path than any single instrument could provide.

Comparisons to historical airbursts have been inevitable. The 2013 Chelyabinsk meteor over Russia produced vastly greater energy, about 440,000 tons of TNT, and caused widespread window breakage and injuries from flying glass. By contrast, the New England bolide’s much smaller energy release and its breakup at high altitude limited damage, while its daytime timing made the sight unusual for most witnesses.

For now, the technical picture is straightforward. Sensors show a bright flash, pressure waves reached populated areas, the trajectory points into Cape Cod Bay, and the object was a natural meteoroid. The follow-up work is procedural: refine the trajectory, confirm whether any fragments survived, and log the event into the record of attended airbursts so scientists can compare it with past examples.

Public safety agencies logged calls and checked for damage. Scientists logged data and began analysis. The two tracks run in parallel: one addresses any immediate public safety concerns, and the other turns raw detections into a physical account of what happened high above New England.

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NASA and regional agencies will continue to review satellite, infrasound and ground camera data to refine the trajectory and fragmentation analysis, with the likely debris corridor narrowed to Cape Cod Bay, where local waters are about 100 feet deep. Originally reported by Reuters.

This article was created with AI assistance.