[NormsRevenge]

In this photo provided by Sandia National Laboratories, Sandia researcher Mark Boslough indicates the fine points of the 'fireball' that might be expected from an asteroid exploding in Earth's atmosphere on a supercomputer simulation during a presentation in Albuquerque, N.M. on Nov. 7, 2007. According to simulations Boslough did using Sandia supercomputers, the asteroid that destroyed the forest at Tunguska in Siberia in June 1908 had a blast force equivalent to one-quarter to one-third of the 10- to 20-megaton range scientists previously estimated — or three to five megatons. (AP Photo/Sandia National Laboratories, Randy Montoya, HO)

[mtbopfuyn]

"It's not clear whether a 10-megaton asteroid is more damaging than a Hurricane Katrina," Boslough said. "We can more accurately predict the location of an impact and its time better than we can a hurricane, so you really could get people out of there if it's below a certain threshold."

Let's see, everyone knew Katrina was coming at least a week before it hit. As landfall drew closer, day by day, and hour by hour, it was clear to everyone it where it was going to hit. Remind me again how many people ignored the warnings and did nothing.

[RayChuang88]

But even if the explosive force is 3 to 7 MT, there are still claims that the object may have exploded in the air like a thermonuclear bomb detonated at 10,000 feet to get maximum blast effect. That explains why there was so much damage over 800 square miles of land.

[SunkenCiv]

Sandia supercomputers offer new explanation of Tunguska disaster
EurekAlert | 12/18/07 | Mark Boslough
Posted on 12/18/2007 1:12:19 PM EST by crazyshrink
http://www.freerepublic.com/focus/f-chat/1941279/posts

[SunkenCiv]

I thought we'd recently seen one like this, but it wasn't in the keyword. Welcome new members.

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[SunkenCiv]

Evidence Of Tunguska-Type Impacts Over
The Pacific Basin Around The Year 1178 AD
SIS Conference | Emilio Spedicato
Posted on 01/26/2003 12:36:14 PM EST by blam
http://www.freerepublic.com/focus/f-news/829934/posts

[SunkenCiv]

Threat of Cometary Impacts may be Underestimated
SpaceDaily | 10/27/2004
Posted on 10/27/2004 10:54:44 AM EDT by cogitator
http://www.freerepublic.com/focus/f-news/1258710/posts

[cogitator]

They're out there.

Meteorite Shower in Park Forest, Illinois

The range of estimates of the original mass of the meteorite is large, 900 kg minimum, 11,000 kg maximum.