Heavy rain (great deal of rainfall)
Change in weather
Melting snow and ice
Overflowing rivers
Thunderstorms (natural weather events)
Lack of vegetation
Storm surge
Tell your parents, tell your principal, and if it is a very deadly situation call the cops.
True, without completing your tasks you cannot accomplish your goal!
Answer:
Roughly around 250,000 to 500,000 WORLDWIDE
But in the U.S alone about 3,000 to 49,000 (from 1976- 2006)
