Module 1 - Q4 Flashcards
memorize (23 cards)
Types of Hydrometeorological
Hazards
- Typhoons
- Storm Surges
- Thunderstorms
- Flooding
- The El Niño Southern
Oscillation Cycle
-are processes or phenomena of
atmospheric, hydrological or
oceanographic nature.
-may cause loss of life, injury or
other health impacts, property
damages, loss of livelihoods and
services, social and economic
disruptions, or even environmental
damages
Hydrometeorological Hazards
is defined as a
non-frontal, synoptic-scale cyclone
developing over tropical and
sub-tropical waters at any level and
having an organized circulation. In
other parts of the world, these are
referred to as hurricanes, typhoons
or simply tropical cyclones
depending on the region.
Tropical Cyclone
Hydrometeorological Hazards in the North Atlantic, Eastern North Pacific and South
Pacific Ocean
Hurricanes
Hydrometeorological Hazards in the bay of Bengal, Arabian Sea and Western South Indian
Ocean
Cyclonic
Hydrometeorological Hazards in the eastern part of the Southern Indian Ocean
willy-willy
Hydrometeorological Hazards in the Western North Pacific Ocean
Typhoons
Why is the Philippines prone to typhoons?
Because PH is found on the Pacific Typhoon Belt
Every year, how many storms are hurled from vast Pacific to the Asian country.
Up to 20 storms
How many storm lands directly?
6-9 hits land directly
refers to a massive region in the west Pacific Ocean, which at 165 million km2, can fit all continents on the planet.
Typhoon Belt
Enumerate the 8 most disaster-prone cities in the Philippines and their rankings.
Tuguegarao in Cagayan (2nd)
Lucena in Quezon Province (3rd)
Metro Manila (4th)
City of San Fernando in Pampanga (5th)
Cabanatuan in Nueva Ecija (6th)
Batangas (7th)
San Carlos – (no province specified in the report) (9th)
Naga in Camarines Sur (10th)
They are the ones that listed that 8 of the
world’s 10 most disaster-prone cities are in the
Philippines.
Asian Centre for Flood Control (ACFC)
Who listed the top 10
flood-prone areas in the Philippines?
DENR-MGB
Enumerate the top 10
flood-prone areas
Pampanga, Nueva Ecija,
Pangasinan, Tarlac, Maguindanao, Bulacan,
Metro Manila, North Cotabato, Oriental Mindoro and Ilocos Norte.
Enumerate the parts of the tropical cyclone structure.
Eye
Eyewall
Rainbands
Dense Cirrus Overcast
The hurricane’s center is a relatively calm,
generally clear area of sinking air and light
winds that usually do not exceed 15 (24 km/h)
and is typically 20-40 miles (32-64 km) across.
Will usually develop when the maximum
sustained wind speeds go above 74 mph (119
km/h) and is the calmest part of the storm.
eye
consists of a ring of tall thunderstorms that produce heavy rains and usually the strongest winds. Changes in the structure of the eye and eyewall can cause changes in the wind speed, which is an indicator of the storm’s intensity. The eye can grow or shrink in size, and double (concentric) eyewalls can form.
eyewall
Curved bands of clouds and thunderstorms
that trail away from the eye wall in a spiral
fashion. These bands are capable of
producing heavy bursts of rain and wind,
as well as tornadoes. There are sometimes
gaps in between spiral rain bands where no
rain or wind is found.
Rainbands
appears as a band of clouds
consisting of showers and
occasional thunderstorms
that encircles the globe near
the equator.
Inter-Tropical
Convergence Zone (ITCZ)
Sustained winds may be
as high as 240 km per
hour, and gusts can
exceed 320 km per
hour.
Strong
Winds
Associated with
tropical cyclones is both
beneficial and harmful.
The rains are harmful
when the amount is so
large as to cause flooding.
Rainfall
