DRR HYDRO METEOROLOGICAL Flashcards
Tropical storms, cyclones, hurricanes and typhoons although named differently describe the same disaster type
TYPHOON
These disaster types refer to a large scale closed circulation system in the atmosphere which combines low pressure and strong winds that rotate counter clockwise in the northern hemisphere and clockwise in the southern hemisphere.
TYPHOON
Indian Ocean and South Pacific
CYCLONE
Western Atlantic and Eastern Pacific
HURRICANE
Western Pacific
TYPHOON
PAGASA
PHILIPPINE ATMOSPHERIC, GEOPHYSICAL AND ASTRONOMICAL SERVICES ADMINISTRATION
A storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning
THUNDERSTORM
A violent, short lived weather disturbance that is almost always associated with lightning, thunder, dense clouds, heavy rain or hail, and strong, gusty winds.
THUNDERSTORM
_ are known to occur in almost every region of the worlds, though they are rare in polar regions and infrequent at latitudes higher than 50 degrees N and 50 degrees S
THUNDERSTORMS
it tends to occur where there are light winds that do not change dramatically with height and where there is abundant moisture at low and middle levels of the atmosphere
ISOLATED THUNDERSTORMS
is an important factor in triggering local, isolated thunderstorms. most such storms occur in the late afternoon and early evening, when surface temperatures are highest
SOLAR HEATING
violent weather at ground is usually produced by organized multiple-cell storms, squall lines, or supercell
MULTIPLE CELL THUNDERSTORMS AND MESOSCALE CONVECTIVE SYSTEMS
A sudden, severe and destructive rush of water down a narrow gully or over a sloping surface, caused by heavy rainfall
FLASHFLOOD
Localized flood of great volume and short duration, typically used by unusually heavy rain in a semiarid area
FLASHFLOOD
can reach their peak volume in a matter of a few minutes and often a carry large loads of mud and rock fragments.
FLASHFLOOD
A temporary rise of the water level, as in a river or lake or along a seacoast resulting in its spilling over and out of its natural or artificial confines onto land that is normally dry.
FLOOD
are usually caused by excessive runoff from precipitation or snowmelt, or by coastal storm surges or other tidal phenomena. Floods are sometimes described according to their statistical occurrence.
FLOODS
Estimation of stage, discharge, time of occurrence, and duration of a flood, especially of peak discharge, at a specified point on a stream, resulting from precipitation
FLOOD FORECASTING
An abnormal rise of water generated by storm, over and above the predicted astronomical tides.
STORM SURGE
Is a warning of the surface water of the Eastern and Central Pacific Ocean, occurring every 4 to 12 years and causing unusual global weather patterns. is said to occur when the trade winds that usually push warm surface water westward weaken, allowing the warm water to pool as far eastward as the western coast of South America
EL NIÑO
Develops over the central and eastern equatorial Pacific and is characterized by unusually cold surface temperatures of the ocean. It is associated with extreme climatic variability such as devastating rains, winds, drought etc.
LA NIÑA
Can prevail for 2 to three seasons thus affecting the economy on both the local and global scales
LA NIÑA
The term La Niña () was used by many scientists and meteorologists to differentiate it from El Niño. It is sometimes called El Viejo (), Anti El Niño, or simply “cold event” or “cold episode”.
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