The Spotlight Is On:
Regolith by Brent Reilly:
When Spacewatch Director Henry Jackson suspects the largest asteroid in 65 million years will strike America in 2012, he must save a skeptical public from mile-high tsunamis, pressure blasts, sterilizing heat, record earthquakes, and a trillion tons of falling molten rock called regolith.
Then he loses his escape plane, stranding his family near Ground Zero, where they must improvise to survive.
Regolith is also avalable on Smashwords.
Brent Reilly is the son of a magazine editor, has a Master's degree in Counseling, speaks Spanish, and builds oceanfront Caribbean condos. You find him and his books on Goodreads: