I think a 30M "and" would result in a Big *BANG*...
Found an article from 2013 with some asteroid a bit bigger at 45 meters - they said 118 Hiroshima bomb equivilant. Or something like 8 modern-day “typical” ballistic nukes.
excerpt:
“Sadly, none of this means cities are safe against these beasts. Airbursts can be dangerous too, depending on the size of the object. On June 30, 1908, a stony asteroid just a bit bigger than the one about to pass Earth exploded over the Podkamennaya Tunguska River, in Siberia, Russia. There was no city near the explosion site—which happened at about 5 to 10 kilometers above the surface—but the airburst obliterated an estimated 80 million trees over an area of 830 square miles (2,150 square kilometers).
In 2011, the estimated population of New York City were about 8.2 million people living over an area of about 302 square miles (783.8 square kilometers). You do the math.”
Yah, but if it hit you in the nads............