Summary (tl;dr)

A loud boom and ground shaking experienced across Northeast Ohio and parts of Pennsylvania on Tuesday morning were confirmed by NASA and the National Weather Service to be caused by a meteor entering and fragmenting in Earth's atmosphere.

Essential Background

Meteors are space rocks that enter Earth's atmosphere. They typically burn up due to intense friction, often appearing as "fireballs" or "shooting stars." When a meteor is large enough and enters the atmosphere at high speeds, it can create a sonic boom as it breaks the sound barrier or fragments, which can be heard and felt on the ground. Such events are not uncommon globally, but rarely occur directly over heavily populated areas to cause widespread noticeable impact.

The Full Story

On Tuesday morning, around 9 a.m. local time, residents across Northeast Ohio, including Cleveland, and extending into parts of Pennsylvania and New York, reported hearing a powerful "loud boom" and feeling their homes shake. Initially, many feared an explosion or an earthquake, leading to a flood of calls to emergency services.

The National Weather Service (NWS) office in Cleveland quickly investigated the incident, with satellite imagery from the Geostationary Lightning Mapper (GLM) suggesting the boom was a result of a meteor. NASA later confirmed that a small asteroid, estimated to be nearly 6 feet in diameter and weighing about 7 tons, entered the atmosphere at approximately 45,000 mph. The object fragmented over Valley City, Ohio, unleashing energy equivalent to about 250 tons of TNT, which generated the explosive noises and ground shaking. While the majority of the meteor likely burned up, small fragments may have reached the ground in the vicinity of Medina County, Ohio. Videos of a bright streak of light in the sky, captured by school bus garage cameras and NWS employees, have also emerged, corroborating the meteor event.

Why It Matters

This event caused widespread public alarm and curiosity, as the sudden loud boom and shaking homes led to concerns about safety and the source of the disturbance. The incident highlights the startling impact natural phenomena like meteors can have, even when they mostly burn up in the atmosphere. The rapid confirmation by authorities like the NWS and NASA helps to alleviate public anxiety and provides a scientific explanation for the unusual occurrence. It also underscores the importance of monitoring atmospheric events and space objects.

Geographic Location

• Northeast Ohio, United States (widespread reports of loud boom and shaking from meteor)
• Cleveland, Cuyahoga County, Ohio, United States (loud boom and shaking experienced)
• Lake Erie, United States/Canada (first visibility of the meteor placed above this area)
• Valley City, Medina County, Ohio, United States (meteor fragmented over this area)
• Medina County, Ohio, United States (potential area for meteorite fragments to have landed)
• Erie County, Ohio, United States (reports of boom as far west as this area)
• Lorain County, Ohio, United States (seismometer detected slight ground shaking)
• Olmsted Falls, Cuyahoga County, Ohio, United States (video of meteor captured by school's bus garage camera)
• Pittsburgh, Allegheny County, Pennsylvania, United States (loud boom reported, NWS employee captured video of meteor)
• Western Pennsylvania, United States (loud boom and fireball reported)