Hydrometeorological Hazard

• “typoon” in chinese term “tai fung”
• It is locally known as bagyo, a term coined

  after Baguio City in Benguet Province where

  the wettest known tropical cyclone way back

  in 1911 hit and dropped approximately 2200

  mm of rainfall for about three days.
• A typhoon is a severe weather disturbance characterized by strong winds and heavy rains which revolve around a central low pressure area.
• A typhoon is the most powerful type of tropical cyclone that forms in the northwestern Pacific Ocean
• • Tropical Depression - wind speed up to 62kph
  • Tropical Storm - wind speed ranging from 63-118kph
  • Typhoon - wind speed greater than 118kph ; can be catgorized as super typhoon with 220 kph
• eye - where winds are weak
• eye wall - brings the strongest winds
• rain bands - spiraling strips of clouds
• • signal #1: 30-60 kph
  • signal #2: 60 - 100kph
  • signal #3: 100 - 185 kph
  • signal #4: more than 185kph
• flood - localized unsual increase of sea water level
• storm surge - abnormal rise of the sea water level in coastal areas
• thunderstorm - lightning and thunder, strong winds, intense rainfall, and occasionally tornadoes
• lightning - abrupt, natural, visible high-voltage electrical discharge
• el niño southern oscillation - “little boy”
• la niña - “little girl”