From 22,300 miles up, GOESEast’s Geostationary Lightning Mapper (GLM), caught an exploding meteor near Pittsburgh on Jan. 1. Some residents reported hearing an associated 'boom.' Learn more about how NOAA satellites keep watch with EarthFromOrbit:
ltiple sonic booms heard in southwestern Pennsylvania. The area was cloudy at the time, but the Geostationary Lightning Mapper onboard the GOES East satellite detected the likely source of the soundsNWS Pittsburgh tweeted out a GLM image to explain the eventA nearby infrasound station registered the blast wave from the meteor as it broke apart, and the data enabled NASA to estimate the energy was similar to 30 tons of TNT.
Had it not been cloudy, the fireball would have been easily visible in the daylight skyWhile designed for mapping lightning flashes,. The instrument takes 500 images of Earth every second, allowing it to measure the shape of a meteor’s light curve, or the change in brightness of a meteor with time, with millisecond precision. In order for GLM to detect these flashes, the bolides need to be as bright as the full moon.
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