The consequences of the fall of the “Chelyabinsk meteorite”: a video model from NASA

When a large (or even not very) cosmic body falls to the Earth, not only a crater is formed (in case the meteorite hit the surface). The fall of a large meteorite, and its fall, entails the appearance of a dust cloud in the planet’s atmosphere, which can “hang” for many weeks. Everything said is also relevant for the meteorite that fell on Chelyabinsk. Experts from NASA modeled the movement of a dust cloud formed as a result of the fall of this cosmic body, and posted a video model on YouTube.

As is known, the power of the Chelyabinsk meteorite explosion is about 30 times greater (in the comments, 21 times) the power of the atomic bomb dropped on Hiroshima. Of course, a cloud of dust from such an explosion is also very large. According to NASA experts, this cloud spread throughout the northern hemisphere for four days, and then remained in the atmosphere for several months (about three).
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The Suomi-NPP satellite was able to estimate the size of the cloud, and also to help scientists track the changes in the size of this cloud and its speed. So, for about three hours after the fall of the meteorite, the cloud spread at a speed of about 300 kilometers per hour.

And yes, the mass of a meteorite, and not its individual fragments, was 11 thousand tons.

Via nasa