If the 1908 asteroid explosion that hit Siberia were to occur above Manhattan today, it would cause more than a trillion dollars in property loss and 3.2 million deaths, according to a catastrophe modeling firm.

Risk Management Solutions (RMS), Newark, Calif., reached its conclusions after superimposing the damage footprint of the 1908 event, which saw a comet blast 3 to 6 miles in the upper atmosphere above the Tunguska River forest in Central Siberia. That explosion leveled trees within a 770 square mile area.

RMS said such an event could create hurricane-force winds and fire ignitions due to thermal exposure.

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