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Hydrometeorological Hazards
Natural hazards caused by climate processes (including droughts, floods, hurricanes and storms)
1. Typhoon
2. Flood
3. Thunderstorm
4. Tornadoes
5. El Nino and La Nina
6. Coastal Hazard
Hydrometeorological Hazards
Temperature
Atmospheric pressure
Wind
Humidity
Clouds
Amount of rainfall
Elements of Weather
Temperature
refers to how hot or cold the atmosphere is
Atmospheric pressure
is the weight of the atmosphere overhead.
Wind
forms because of differences in temperature and atmospheric pressure between nearby regions.
Humidity
refers to the amount of water vapor in the air.
Clouds
can affect the amount of sunlight reaching the Earth's surface.
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.
Typhoons
originate in the northwest pacific ocean.
Cyclones
are storms that form in the Indian ocean, and southwest pacific
Hurricanes
form in the Atlantic.
Tropical Cyclone
is used by most countries to describe cyclonic storms that originates over tropical oceans in accordance to the international agreement
25
THERE ARE ____ TROPICAL CYCLONES THAT ENTER TO PAR
Tropical depression
35 to 63 kph
Tropical storm
64 to 117 kph
Typhoon
117 to 180 kph
Super-typhoon
More than 180 kph
FLOOD
It is the overflowing of water from heavy rain into a land that is normally dry.
RIVER FLOOD
-occurs when large amount of rainfall water causes rivers to overflow.
FLASH FLOOD
- Most dangerous kind of floods, because they combine the destructive power of a flood with incredible speed and unpredictability
COASTAL FLOOD
- occurs when normally dry, low-lying land is flooded by seawater
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
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
THUNDERSTORMS
A storm that produces lightening and thunder and often heavy rains and strong winds
TORNADOES
These are localized windstrom characterized by a visible funnel-shaped, rapidly whirling cloud extending downward from the base of a dark cumulonimbus clouds
2 winds with different speed
Cumulonimbus clouds
Combination to form a tornado:
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
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
STORM SURGE
A rising of the sea as a result of atmospheric pressure changes and wind associated with a storm.
Coastal Erosion
Wearing away of rocks in the surface.
Salt Intrusion
Movement of saltwater into freshwater aquifer which may result to over extraction of groundwater.