Weather Disturbances

Weather disturbances refer to any disruption of the atmosphere's stable condition. It can manifest through the formation of low - pressure area or different prevailing winds like monsoon and the Intertropical Convergence Zone (ITCZ).

In a cyclone, the cool air flows to take the place of the rising warm air. As a result, the air current spins. The wind spirals around the center of the cyclone. This center is called the "eye". When a cyclone is formed over the tropics, it is called a tropical cyclone.

In average, the Philippines experiences 20 typhoons a year. The biggest contributor of the weather disturbances in our country is the PACIFIC OCEAN which lies on the eastern part of the country. The typhoon is just one of the many weather disturbances we experience.

Weather is the condition of the atmosphere at a short period of time.

THE DIFFERENT FACTORS THAT AFFECT WEATHER INCLUDE:

1. air temperature

2. air pressure

3. humidity

4. clouds

5. precipitation

6. wind speed and direction

WHEN THESE FACTORS CHANGE AND AFFECT THE CONDITION OF THE ATMOSPHERE, WEATHER DISTURBANCES OCCUR.

Weather disturbances refer to any disruption of the atmosphere's stable condition. It can manifest through the formation of low - pressure area or different prevailing winds like monsoon and the Intertropical Convergence Zone (ITCZ).

It can manifest through the formation of low pressure area or different prevailing winds like monsoon and the Intertropical Convergence Zone (ITCZ)

LOW PRESSURE AREA (LPA) and HIGH PRESSURE AREA (HPA)
An abrupt change in air pressure can trigger weather disturbances. When cold air sinks, it results to high pressure area. Since most of the air is pressing down, the air on the surface becomes dry.

But when air rises, less air presses downward resulting to the formation of low pressure area. Low Pressure Area can result to weather disturbances such as RAINS and STRONG WINDS.

The PHILIPPINE ATMOSPHERIC GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION (PAGASA) keeps track of cyclones that enter the PAR (Philippine Area of Responsibility)

CLASSIFICATION OF CYCLONE ACCORDING TO STRENGTH OF WIND:

1. Tropical Disturbance - it is an isolated weather system with an apparent circulation. It is characterized by a poorlt developed wind circulation.

2. Tropical Depression - it is weak low pressure disturbance with a definite surface circulation.