The document describes various hydrometeorologic hazards that can occur in the Philippines and surrounding regions, including typhoons (called bagyos), which are powerful storms that can reach wind speeds up to 200 kph; thunderstorms, which produce heavy rain, lightning, air turbulence, and fires; floods, which occur when large amounts of water cover dry land from rising bodies of water; and flash floods, which are short local floods from heavy local rainfall. It also mentions tornadoes and whirlwinds, which involve very strong spinning winds; and storm surges, which are abnormal rises in sea water levels.