-A CYCLONE FORMED IN THE TROPICS WITH WINDS OF 117 KILOMETERS PER HOUR OR GREATER USUALLY ACCOMPIED BY RAIN, THUNDER, AND LIGHTNING.
FOR MORE INFORMATION ON HURRICANES SEE: Hurricane Disaster Info. File Destruction Hurricanes
-VENTS IN THE EARTH'S CRUST FROM WHICH MELTED OR HOT ROCK AND STEAM COME OUT.
FOR MORE INFORMATIION ON VOLCANOES SEE: Soufriere Volcano Violent Activities
-A LONG HEAVY SNOWSTORM ACCOMPANIED BY LARGE AMOUNTS OF SNOW AND VERY STRONG COLD WINDS.
FOR MORE INFORMATION ON BLIZZARDS SEE: Have Snow Shovel,Will Travel Winter Storms