DRRR

• Hydrometeorological hazards


  Atmospheric and hydrological phenomena that may cause loss of life, injury, health impacts, property damage, loss of livelihoods and services
• Typhoon


  • An extremely large, powerful and destructive storm that occurs especially in the region of the Philippines or China
• Thunderstorm


  • Weather condition generally characterized by heavy rain, thunder and lightning and a possibility of tornado
• Lightning injures more people than it kills. Approximately 90% of those lightning hits survive, but often with long-lasting neurological damage
• Thunderstorm needs


  1. Moisture—to form clouds and rain

  2. Unstable air—warm air that can rise rapidly

  3. Lift—caused by cold or warm fronts, sea breezes, mountains, or the sun's heat
• Flood


  The running and overlaying of water on land that are not ordinary covered by it
• Types of Floods


  • Flash floods
  • River Floods
  • Coastal floods
  • Urban floods
  • Ice Jam
• Flash floods


  • Caused by heavy or excessive rainfall in a short period of time, generally less than 6 hours
• River Floods


  • Occurs when the water level in a river, lake or stream rises and overflows
• Coastal floods


  • Normally occurs when dry and low-lying land is submerged by seawater
• Urban floods


  • Caused by excessive runoff in developed areas where the water doesn't have anywhere to go
• Ice Jam


  • Happens when chunks of ice clump together to block the flow of a river, causing flooding in nearby communities
• El Niño


  A flow of unusually warm water from the Pacific ocean that causes many changes in weather in other places
• El Niño was first observed off the west coast of South America and tends to occur around Christmas time</b>
• El Niño, Spanish: "the boy child", named after baby Jesus
• El Niño


  • Occurs irregularly, every 2-7 years
• Major drought years


  Are associated with El Niño events
• Types of drought


  • Meteorological drought
  • Hydrological drought
  • Agricultural drought
• Meteorological drought


  Based on the degree of dryness or rainfall deficit and the length of the dry period from normal levels over period of time
• Hydrological drought


  Occurs when low water supply becomes evident, especially in streams, reservoirs, and groundwater levels
• Agricultural drought


  Occurs when soil moisture and rainfall are inadequate during the crop growing season causing extreme crop stress and wilting
• La Niña


  A climate pattern that describes the cooling of surface ocean waters in the Pacific ocean
• La Niña, Spanish "Little girl", is caused by a build-up of cooler-than-normal waters in the tropical Pacific
• Storm surge


  Escalating seawater to the coast above normal sea level