hydrometeorological hazards

    Cards (27)

    • are dangers associated with the natural phenomena involved in transport of water and energy between land surface and lower atmosphere.
      hydrometeorological hazards
    • intense circulating winds with heavy rain
      typhoon
    • typhoon are tropical cyclones whose winds are reached more than 118 kph
    • up to 61 kph

      tropical depression
    • 62 - 88 kph

      tropical storm
    • 89 - 117 kph

      severe tropical storm
    • 118 - 220 kph

      typhoon
    • exceeding 220 kph

      supertyphoon
    • PSWS
      Public storm warning signal
    • issued by the PAGASA to alert the public about incoming tropical cyclones

      PSWS
    • Winds of 30 – 60 kph
      Intermittent may be expected in at least 36 hours
      Preschool suspended - Very light or no damage

      public storm signal no. 1
    • Winds are greater than 60 kph and up to 100 kph
      expected in 24 hours
      primary & secondary levels suspended
      light to moderate damage
      outdoor activities postponed
      public storm signal no. 2
    • Winds are greater than 100 kph - 185 kph
      Expected in at least 18 hours
      All classestertiary levels ( college / univ ) suspended
      Moderate to heavy damage
      People advised to seek shelter
      public storm signal no. 3
    • Strong wind of more than 185 kph but less than 220 kph
      Expected at least 12 hours
      All schools closed and some government and private agencies suspended
      Heavy damage
      public storm signal no. 4
    • Maximum sustained wind of more than 220 kph
      Experienced within 12 hours
      No school or business
      Evacuation should be completed
      public storm signal no. 5
    • also known as electrical storm
      thunderstorm
    • The hazard in thunderstorms is associated with the following:
      Heavy rainfall
      Lightning
      Air turbulence
      Fire
    • presence of excessive water on a supposedly dry land
      flood
    • rapid flow of water on a saturated soil or dry soil
      flashflood
    • abnormal rise in coastal waters
      stormsurge
    • rapidly rotating column of air
      tornado
    • large scale warming of the ocean

      el nino
    • cooling of areas in a different season

      la nina
    • la nina start in the eastern part of the tropical pacific ocean
    • tools for monitoring hydrometeorological hazards
      1. doppler radar
      2. automated rain gauge
    • used to measure important weather parameters such as amount of rainfall & direction, speed & intensity winds
      doppler radar
    • used to detect possible flooding and flashflood
      automated rain gauge
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