Hydrometeorological Hazards

    Cards (41)

    • What are hydrometeorological hazards?
      Processes or phenomena of atmospheric nature
    • What impacts can hydrometeorological hazards cause?
      Loss of life, property damage, and disruptions
      • Downward movement of a mass of soil, rocks, and debris along the slope.
      • Most common type of hazard.
      Landslide
    • What is another name for a landslide?
      Land Slip
      • Overflowing of water
      • Most common and costly

      Flood
    • What are the types of floods?
      1. Flash Flood
      2. Urban Flood
      3. River Flood
      4. Coastal Flood
      5. Ice Jam
      6. Glacial Lake Outbursts Flood
    • Rapid flooding or geomorphic low-lying areas like washes, rivers, dry lakes, and basins.

      Flash Flood
    • How quickly can a flash flood occur?
      Within 6 hours due to heavy rainfall/dam failure.
    • Poor drainage system.

      Urban flood
      • Caused by precipitation.
      • Large catchment area.
      River flood
      • Due to storm surge.
      • When a water covers the normally dry coastal land.
      Coastal flood
    • Too much accumulation of ice.
      Ice jam
      • Sudden release of a significant amount of water retained in a glacial lake, irrespective of the cause.
      • Caused by the failure containing glacier/glacial lake, melting of glacier and volcanic eruption under a glacier.
      Glacial lake outbursts flood
    • What are the characteristics of a flood?
      1. Depth of Water
      2. Duration
      3. Velocity
      4. Frequency of Occurrence
      5. Seasonality
    • What is a tornado?
      Funnel-shaped rotating violent winds
    • What is a hurricane?
      Violent atmospheric disturbance with strong winds
    • What is the term for a hurricane in the Northeast Pacific Ocean?
      Hurricane
    • What is the term for a hurricane in the Northwest Pacific Ocean?
      Typhoon
    • What is the term for a hurricane in the Northern Indian Ocean?
      Cyclone
    • Which ocean basin is the most active for typhoons/cyclones?
      Northwestern Pacific Ocean
    • What is a drought?
      Long period of low precipitation
    • How long can a drought last?
      15 days to 2 years
    • What are the most common hydrometeorological hazards according to NOAA?
      1. Cyclone
      2. Typhoon
      3. Flood
      4. Tornado
      5. Thunderstorm
      6. El Niño and La Niña
    • What is the classification of a cyclone with wind speeds of 35 to 63 km per hour?
      Tropical Depression
    • What is the classification of a cyclone with wind speeds of 64 to 118 km per hour?
      Tropical Storm
    • What is the classification of a cyclone with wind speeds above 118 km per hour?
      Typhoon
    • What is a thunderstorm?
      Weather condition producing lightning and thunder
    • What are the key elements of rainfall?
      Intensity and Duration
    • What is rainfall intensity?
      Rate of rainfall
    • What is rainfall duration?

      How long the rain lasts
    • What is a storm surge?
      Rise of sea water above normal level
    • What are El Niño and La Niña?
      Complex weather patterns from ocean temperature variations
    • What is the ENSO cycle?
      • Fluctuations in temperatures between ocean and atmosphere
      • Occurs in the east-central equatorial Pacific
      • Includes El Niño and La Niña phases
    • What is La Niña?
      Cold phase of the ENSO cycle
    • How long does La Niña typically last?
      Between 9 to 12 months
    • What is El Niño?
      Warm phase of the ENSO cycle
    • How do we track a storm?
      Using satellites and Doppler radar
    • What is Doppler radar?
      Technology that detects storms using radio waves
    • What does Doppler stand for?
      Radio Detection and Ranging
    • How does Doppler radar work?
      Releases radio waves that bounce back