DRR Q4 Lesson 3: Hydrometeorological Hazards

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32 Terms

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Hydrometeorological Hazards

Natural hazards caused by climate processes (including droughts, floods, hurricanes and storms)

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1. Typhoon

2. Flood

3. Thunderstorm

4. Tornadoes

5. El Nino and La Nina

6. Coastal Hazard

Hydrometeorological Hazards

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Temperature

Atmospheric pressure

Wind

Humidity

Clouds

Amount of rainfall

Elements of Weather

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Temperature

refers to how hot or cold the atmosphere is

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Atmospheric pressure

is the weight of the atmosphere overhead.

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Wind

forms because of differences in temperature and atmospheric pressure between nearby regions.

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Humidity

refers to the amount of water vapor in the air.

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Clouds

can affect the amount of sunlight reaching the Earth's surface.

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Typhoons, Cyclones, and Hurricanes

_______________ refer to the SAME phenomena but only DIFFER in the location where they occur.

Edward Cesar G.S

It is characterized by a low atmospheric pressure, high winds, and heavy rain.

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Typhoons

originate in the northwest pacific ocean.

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Cyclones

are storms that form in the Indian ocean, and southwest pacific

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Hurricanes

form in the Atlantic.

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Tropical Cyclone

is used by most countries to describe cyclonic storms that originates over tropical oceans in accordance to the international agreement

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THERE ARE ____ TROPICAL CYCLONES THAT ENTER TO PAR

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Tropical depression

35 to 63 kph

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Tropical storm

64 to 117 kph

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Typhoon

117 to 180 kph

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Super-typhoon

More than 180 kph

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FLOOD

It is the overflowing of water from heavy rain into a land that is normally dry.

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RIVER FLOOD

-occurs when large amount of rainfall water causes rivers to overflow.

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FLASH FLOOD

- Most dangerous kind of floods, because they combine the destructive power of a flood with incredible speed and unpredictability

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COASTAL FLOOD

- occurs when normally dry, low-lying land is flooded by seawater

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Towering of cumulonibus clouds

Darkening Skies

Flashes of lightning and gusty winds

Sound of thunder

Static on your communication equipments

Signs of an Impending Thunderstorm

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Stay or go inside

Stay away from anything that could conduct electricity

Do not use any plug-in electrical appliances

Do not use telephone/CP during thunderstorm

How to Prepare for a Thunderstorm

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THUNDERSTORMS

A storm that produces lightening and thunder and often heavy rains and strong winds

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TORNADOES

These are localized windstrom characterized by a visible funnel-shaped, rapidly whirling cloud extending downward from the base of a dark cumulonimbus clouds

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2 winds with different speed

Cumulonimbus clouds

Combination to form a tornado:

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The appearance of funnel-shaped column from the base of cumulonimbus clouds

Feels warm, humid, uncomfortable calm weather

Lightning and thunder

Roaring and buzzing sound of the tornado as it reaches the ground

Signs of an Impending Tornado

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GO TO WINDOWLESS, INTERIOR ROOM

GET IN BASEMENT IF AT POSSIBLE

PROTECT HEAD AND NECK

IF CAUGHT OUTSIDE, GET IN DITCH OR DRAINAGE AREA.

BE VERY AWARE OF FLYING DEBRIS

WHAT TO DO DURING A TORNADO

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STORM SURGE

A rising of the sea as a result of atmospheric pressure changes and wind associated with a storm.

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Coastal Erosion

Wearing away of rocks in the surface.

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Salt Intrusion

Movement of saltwater into freshwater aquifer which may result to over extraction of groundwater.