Hydrometeorological Hazards and Disasters Flashcards
- process or phenomenon of atmospheric, hydrological or oceanographic nature that may cause loss of life, injury or other health impacts, property damage, loss of livelihoods and services, social and economic disruption, or govenrnmental damage
Hydrometeorological Hazards
Hydrometeorological Hazards:
- The El Niño and the La Niña Phenomena
- Tropical Cyclone
- Floods
- Storm Surge
- Thunderstorm
- Tornado
- Drought
type of hydrometeorological hazard that is:
- no rain
- dried up
El Niño
El Niño means?
The Little Boy or Christ Child in Spanish
El Niño was originally recognized by?
fishermen
Where was El Niño originally recognized?
Coast of South America year 1600s
The term El Niño refers to the?
large-scale ocean-atmosphere climate interaction
type of hydrometeorological hazard that is associated with heavy rainfall and hazard such as flood
La Niña
La Niña means…
- The Little Girl
- El-Viejo, anti El-Niño
- a cold event
It is an intense low pressure system
Tropical Cyclone
Tropical Cyclone also called
Typhoon or Hurricane
It refers to both the geographic origin of these systems, which form almost exclusively in tropical regions of the globe
Tropical
- it refers to such storms
- cyclonic nature
- counter clockwise in Northerm Hemisphere
- clockwise in Southern Hemisphere
Cyclone
How many km to diameter has an eye in tropical cyclones have?
10-100 km to diameter
Categories of Tropical Cyclones:
- tropical depression
- tropical storm
- severe tropical storm
- typhoon
- super typhoon
tropical depression
winds of up to 61 kph
tropical storm
winds of up to 62 to 88 kph
severe tropical storm
winds of up to 89 to 117 kph
typhoon
winds of up to 118 to 220 kph
typhoon
winds of up to 118 to 220 kph
super typhoon
winds exceeding 220 kph
Automatic Suspension Guidelines:
Signal 1- no classes kindergarten
Signal 2 - no classes kinder, elem, highschool
Signal 3- no classes kinder, elem, highschool, college
LGU
Local Government Unit
who has the authority to declare local suspensions in areas where there is no storm signal
LGU
Types of floods:
- river flood
- flash flood
- coastal flood
types of flood that is caused by the overflowing of rivers
River flood
It is a type of flood that is caused by a very short period of time of unusual heavy rainfall.
Flash flood
type of flood that occurs whenstrong onshorewinds push thewater inland. The rise in thesea level also causes flooding of the low-lying coastal areas.
Coastal flood
PAGASA’s Color-Coded warning signals for flooding
- yellow rainfall advisory
- orange rainfall advisory
- red rainfall advisory
yellow rainfall advisory
- 7.5 - 15 mm (heavy) rain
- flooding is possible
- monitor the weather condition
orange rainfall advisory
- 15-30 mm (intense) rain
- flooding is intense
- alert for possible evacuation
red rainfall advisory
- more than 30 mm rain
- serious flooding expected in low lying areas
- evacuation
EAS
Emergency Alert System
NOAA
National Oceanic and Atmospheric Administration
the abnormal rise in the seawater level during a storm
Storm surge
Causes of storm surge:
- wind/pressure effect
- rainfall effect
- tidal effect
- shape of the Coastline and slope of the sea bed
The Stronger the wind of the tropical cyclone and the lower the atmospheric pressure, the higher the storm surge. (One of the causes of storm surge)
Wind/pressure effect
The Stronger the wind of the tropical cyclone and the lower the atmospheric pressure, the higher the storm surge. (One of the causes of storm surge)
Wind/pressure effect
The Stronger the wind of the tropical cyclone and the lower the atmospheric pressure, the higher the storm surge. (One of the causes of storm surge)
Wind/pressure effect
One of the causes of storm surge that is heavy rains associatedwith an intense tropical cyclone
Rainfall effects
One of the storm surge cause that coincides with the occurrence of high tide, waterlevel
Tidal effects
One of the causes of storm surge that is shallower the slope, the higher the surgeto the coastal communities.
shape of the Coastline and slope of the sea bed
It is a localized storm cloud that produces lightning and thunder, and often brings heavy rain or hail as well as strong gusty winds.
Thunderstorm
Thunderstorm Undergoes 3 Stages:
- Initial or Culumus Stage
- Mature Stage
- Dissipating Stage
Thunderstorm can produce dangerous weather such as:
- heavy rain
- floods
- tornadoes
- hailstones
- lightning
It is a violently rotating column of air extending from the base of a thunderstorm down to the ground.
Tornado
Tornado is called what in the Philippines?
Buhawi or ipo-ipo
Tornado is also known as?
Twister
When a tornado occurs or moves over a body of water,it is called
watersprout
Tornado can be predicted through the use
Dople Radar
- lack of rainfall for normal needs.
- shortages in the water supply
Drought
