Asian countries experience weather disturbances like tropical cyclones, intense low pressure areas, and tropical waves more often than other parts of the world due to prevailing wind patterns. The Philippines in particular sees three main wind systems - the northeast monsoon, southwest monsoon, and trade winds - that can drive these disturbances. Major weather events for the Philippines include tropical cyclones that form from converging trade winds in the Intertropical Convergence Zone and range from tropical depressions to super typhoons depending on wind speeds.

1. A fact about weather disturbance
• According to the weather channel, Asian
countries get hit by weather disturbances
more often than countries that are away
from Asia

2. What is a weather
disturbance?
A weather disturbance is a strong
wind and water combined and can
cause weather disturbance

3. examples of weather disturbance
• The different weather disturbances are tropical cyclones, intense tropical
cyclones, low-pressure areas, very intense tropical cyclones and tropical waves
tropical cyclones
(hurricanes)
Low-pressure area Tropical waves

4. Prevailing Winds in the
Philippines

5. • Being near the equator, the Philippines has a
tropical climate that has three prevailing wind
systems:
The northeast monsoon or amihan
Southwest monsoon or habagat
And trade winds

6. three prevailing wind systems
The northeast monsoon or
amihan
• The northeast monsoon or
amihan is characterized by cold
and dry weather.
Southwest monsoon or
habagat
• is very warm and humid, occurs
when warm moist air flows over
the country from the southwest
direction.
• The trade winds or easterlies are the
permanent east-to-west prevailing
winds that flow in the Earth's equatorial
region.
Trade wind

7. What is a trade wind?
• The trade winds are winds that reliably blow east to
west just north and south of the equator. The winds
help ships travel west, and they can also steer
storms such as hurricanes.
THE INTERTROPICAL CONVERGENCE ZONE
(ITCZ)
The Intertropical Convergence Zone or ITCZ is where the
northeast and the southwest trade winds meet. It creates a low-
pressure area (LPA), which may develop into a tropical cyclone.

8. Types of weather disturbance
• Tropical cyclones
• Tornadoes
• And thunderstorms
Are some of the types of weather disturbance that affect people in different parts of
the world
Tropical cyclone
• A tropical cyclone is a rapidly rotating storm characterized by a low-pressure
area, strong winds, and organized thunder storms, which produce heavy rain.
• A hurricane is the most destructive storm in North America

9. What is a hurricane?
• A hurricane is an eye of a storm and is also known as the source of the storm
• A hurricane is a tropical storm with winds that have reached a constant speed of
74 miles per hour or more. The eye of a storm is usually 20-30 miles wide and
may extend over 400 miles. The dangers of a storm include torrential rains, high
winds, and storm surges.
Thunderstorm
• A thunder storm is a dangerous weather disturbance characterized by heavy
rains, lightning and loud thunder sounds
Tornado
• A tornado is another violent storm and also another wind storm that is more
dangerous than a thunderstorm.

10. Classification of tropical cyclones
P-PHILIPPINE A-ATMOSPHERIC G-GEOPHYSICAL AND A-ASTRONOMICAL S-
SERVICES A-ADMINISTRATION.
Tropical depression (TD) When the tropical disturbance becomes stronger and the wind begins to
spiral toward a center of a low-pressure area.
Tropical storms (TS) A tropical storm is composed of organized systems of strong thunderstorms
with an intense circulation of winds near the center and of rain fall forming into distinct bands
Severe Tropical Storm (STS) A tropical storm becomes a severe tropical storm when its winds reach a
maximum speed of 89 to 117 kph, or 48 to 63 knots
Typhoon (TY) A tropical storm becomes a typhoon when the air movements form around the eye of
the low=pressure area and reach a wind speed of 118 to 220 kph, or 64 to 120 knots
Super Typhoon (STY) A tropical cyclone with a wind speed exceeding 220 kph. Or 120 knots, is

11. Formation of a Typhoon
The warm water in the ocean heats up the air above it , allowing it to evaporate.
Parts of a typhoon
A typhoon has 3 parts:
The eye The region of calm, clear skies, and low pressure and around which the entire storm rotates
The eye wall The area surrounding the eye the region with the most damaging winds and heaviest rains
And rain bands The dense thunderstorm clouds that spirals around the eye wall slowly counterclockwise
or in the same directors as that of the winds