http://house.napalm.net/napalm/video/ivymike.mpgbout 32megs.

The explosion yielded 10.4 Mgt. Mike\'s fireball measured 3 miles (Fireball, not explosion, which reached about 25 miles). The cloud formed by Mike shot was immense. Stabilized, it reached 135 000 ft high, and stretched 60 miles in diameter, which eventually spread over 1000 miles. The commentary by the guy on the boat is actually pretty funny in a sick way.
Mike destroyed the entire Elugelab island. The crater formed as a result of the explosion measured 6240ft(1.5Km) across and 164ft(53m) deep. Following the test, high levels of radiation covered most of the Enwetak atoll.
This was 4th largest test ever conducted by US, (the largest at that time). For comparison, this is more then all allied bombs dropped during WW II together.
Once again. Enjoy
Note: This bomb is 10,000 KT (or 10 Megatons, or 10 million tons of TNT) The video in my other post is 75KT for comparision. The center of this explosion reached temperatures hotter than the sun.