DRRR WEEK 2

e1 ko dami nito tanginang yan

tumultuous storm

typhoon is described as a

false

true or false? A typhoon is a large storm system that moves in a spiral or
circular motion producing weak
winds within hundreds of kilometers or
miles in diameter.

low atmospheric pressure

Usually, the wind moves around a region of

western part of the South Pacific Ocean known as the North-Western Pacific Basin

Meteorologist also illustrates typhoons as
a mature tropical cyclone that develops
in the

1/3

Almost? of the world’s yearly
tropical cyclone originates in this basin
making it the most active tropical cyclone
basin on Earth.

north-western pacific basin

most active tropical cyclone basin

Hurricane

A virulent storm
originating from the Atlantic
Ocean and Eastern Pacific

Tropical Cyclone

originates in the Indian Ocean

tipon

In 1550, it is described as a violent storm

whirlwind

greek word based
from a character personified as a giant,
father of the winds

cyclone

recorded during a voyage of Caesar
Frederick to the East Indies

tai fung

Chinese word
describing a “great wind”

toofan

indian word pertaining
to “big storm.

tufan

Arabic word,
Persian and Hindi term meaning “big
cyclonic storm”.
Typhoon as...

bagyo

Filipinos refer to it as

willie-willie

Australians refer to it as

tornado

south Americans typhoon refer to it as

severe cyclonic storm

is the term
used for strong winds coming from
Southeast and Southwest Indian
Ocean and Southwest Pacific Ocean

typhoon

is the term used in
Northwest Pacific Ocean

hurricane

is the term used in
South Pacific Ocean and North Atlantic
Ocean

severe cyclonic storm

is the term used in North Indian Ocean

12-20

The Philippines experienced “bagyo” how many times annually.

typhoon

accompanied by strong
winds, heavy rains and large ocean waves

false

true or false? A typhoon’s wind circulation revolves to the
left of the Southern Hemisphere and to
the right in the Northern Hemisphere

PAGASA

The country’s premier agency for
meteorological and hydrological hazards

Philippine Atmospheric Geophysical & Astronomical Services Administration

PAGASA?

1963

PAGASA has independently named tropical
c y c l o n e s e n t e r i n g P h i l i p p i n e A r e a o f
Responsibility (PAR) since

alphabetical

Following the
A m e r i c a n t ra d i t i o n of n a m i n g ty p h o o n in
what order?

2000

PAGASA had traditional utilized female name ending in “ng” until early ? when they started using male’ snames.

tropical depression

less than or equal to 61 kph

tropical storm

62 to 88 kph

severe tropical storm

89-117 kph

typhoon

118 to 220 kph

super typhoon

more than 220 kph

eye

center part
which has the lowest pressure

eye

There is
definite stillness of light wind about 20 kph

eye

I t g e n e r a t e s a p a r t l y c l o u d y c l e a r s k y
alternating with thin clouds of 30 km average
diameter.

eyewall

arrange band of clouds in the
eye of a storm

eyewall

It is the area with most
turbulent winds

eyewall

Meteorologists expect its typhoon force wind
to be more than 118 kph

eyewall

average of 8-40 km and strongest precipitate

inner rainbands

organized winds that move
inwardly or s p i r a l l y t o w a r d s t h e c e n t e r

63 to 117 kph

inner rainbands generate an occasional precipitate with winds
up to

90%

inner rainbands is characterized by atleast how many percent?
sky coverage with soaring or far above the ground
clouds

outer rainbands

dispersed outer spiral
winds that move inwardly

62 kph

outer rainbands generate a placid to
judicious rainfall with winds up to

50%

Sunlight is still
evident with atleast how many percent? cloud coverage.

okta

The amount of cloud coverage at any given area

0-8

range of okta

thunderstorm

A type of storm illustrated by
the occurrence of lightning and
its acoustic effect on the Earth’s
a t m o s p h e r e

lightning storm, electrical storm, and thundershowers

thunderstorm is also known as

thunderstorm

It is typically exemplified with
heavy rains accompanied with
thunder

true

True or False? Given that thunder is a result
of lightning, all thunderstorms
have lightning.

cumulonimbus clouds

Thunderstorms happen commonly
with the

archetypal thunderstorm

15 miles in diameter and last for about 30 minutes.

Cumulus stage

The initial stage in thunderstorm is identified as

cumulus stage

The warm air increases and
wa t e r va p o r c o n c e n t ra t e s t o a
towering cumulus clouds which could
ascend a height of 8-10 km.

maturing stage

the second stage in thunderstorms is called

maturing stage

It is where clouds can generate
heavy rains, relentless lightning,
strong and gusty winds, hail and
sometimes tornadoes. It is at
this stage where thunderstorm is
at its strongest.

falseee

true or false? the maturing stage is the stage where thunderstorms is at its weakest

dissipating stage

is when precipitation decreases
its intensity and clouds begin to
dissipate. Some thunderstorm
produces a burst of strong winds
and lightning lingers risk during
this stage

flood

These hyrometeorological hazards
are capable of generating large
amount of precipitation that pour to
t h e h e av i l y c l o g ge d s e we ra ge
systems of the metropolis causing
the unnecessary water surplus

flood

b a s i c a l l y m e a n s a n
overf lowing of water from streams
and other bodies of water or an
accumulation of rainwater in low-
lying areas

flood

transitory pour out of
a normally waterless area due to
s pill over of a body of water,
remarkable build up, run off of
surface waters or atypical erosion
or destabilization of shoreline

flood

can also be overflow of
mud f low caused by a buildup of
water underground.

heavy and extended rainfall

Hydrometeorological
disturbances such as tropical cyclones, low pressure areas,
inter tropical convergence zone, cold fronts and monsoons
could lead to heavy floodings.

storm surge

It can generate elevation of ocean level to
ground height to several feet and flood nearby low-lying
coastal communities.

high tide

that coincides with high stream flows can
aggravate flooding near the coast.

infrastructure and coastal development

It increases the resistance of
ground surfaces due to concrete roads and loss its ability to soak up f lood waters
and may result to flash flooding

infrastructure and coastal development

It increases the resistance of
ground surfaces due to concrete roads and loss its ability to soak up f lood waters
and may result to flash flooding

blasting

generates landslides in the slopes of hills and mountains and may
result to unintended damning of rivers and streams

blasting

generates landslides in the slopes of hills and mountains and may
result to unintended damning of rivers and streams

deforestation

decreases the permeation capacity and speed of the flood flows

failure of levees and dams

can produce the worst f lood events by releasing
large quantities of water.

minor flooding

flooding that may or may not be cause by
overbanking. It could be simply due to build up of unwarranted
surface overflow water in f lat low-lying areas. Flood water is usually
confined along riverbeds and low-lying areas of the metropolis

major flooding

flooding is a result of overflowing rivers and lakes;
serious damage from major water reservoir likes dams, dikes or levees;
Flood waters affects many neighborhood and stretch rapidly to adjacent
shoreline of comparatively lower elevation. There is a persistent water
current in some areas particularly seem in deep flooding

flash floods

Normally floods take about 12 to 24 hours or longer
to develop after an intense downpour. But there is a
particular type which develops in less than 6 hours
commonly termed as

flash flood

build up in areas with steep slopes of
rivers.

storm surge

During a tropical cyclone it is common for
ocean waves to be pushed towards the shore
by the force of the wind and the intense
pressure of a heavy down pour.

daluyong ng bagyo

storm surge or?

storm surge

unusual ascend of water during a typhoon, over and
above the calculated high wave

storm tide

elevation of water level during a typhoon caused by
both high tide and storm surge

coastal flooding

is a direct result of storm
surge

3-6 hrs

Storm surges can set off flooding coastal areas

20

A Super Typhoon can spawn a storm
surge elevation of more than __ feet
above sea level

wind/pressure effect

Winds is directly proportional
to storm surge and inversely proportional to atmospheric
pressure.

rainfall effect

Heavy precipitation caused by
typhoons increase the total surge height near the coast.

tidal effect

If the storm surge coincides with the
occurrence of astronomical tide, surge height will be higher

shape of the coastline

The gentler is the slope, the
higher is the surge in the coastal areas

El Nino

Phenomenon is the extreme warming
of sea surface that develops in the Pacific Ocean

El nino

causes heavy rains in some parts of
the world and drought in other parts

Little Child/Boy Child

El Niño, a Spanish term meaning

El Nino

It was the term used by Peruvian fishermen in
describing the warm ocean current f lowing
along its coast around Christmas season

2-9 years

El Nino occurs in the Pacific bowl every

La Nina

linked to a change in atmospheric
pressure known as Southern Oscillation

La Nina

Little Girl

El Viejo or Old man

La Nina is recognized in some Spanish countries as?

La Nina

bizarrely
freezing ocean temperatures increasing rainfall over the
western half of Pacific Ocean