Hydrometeorological Hazard Maps. in DRRRpptx

hydrometeorological hazard maps

1. Hydrometeorological Hazard Maps

2. The Philippines ranks among the world’s most disaster-prone countries. It is highly prone to natural disasters, particularly typhoons, floods, landslides, volcanic eruptions, earthquakes, and tsunamis, lying as it does in the typhoon belt, in the active volcanic region known as the “Pacific Ring of Fire,” and in the geologically unstable region between the Pacific and Eurasian tectonic plates .

3. Aside from the natural disasters that reap an especially heavy human toll each year, thousands are also displaced by human-made disasters like armed conflict and development aggression. The intensifying effect of climate change also aggravates the already burdened citizens with the worsening economic instability worldwide 

4. RAINFALL IN THE PHILIPPINES Rainfall is the most important climatic element in the Philippines. Rainfall distribution throughout the country varies from one region to another, depending upon the direction of the moisture-bearing winds and the location of the mountain.

5. Aside from rain gauge monitoring in different parts of the Philippines, PAGASA publishes regularly updated color-coded satellite. Color code is as follows: Red – heavy rain; Yellow – light to moderate rain; White – clouds; Blue – clear sky.

6. Weather radar can detect hydrometeors (e.g. rain, clouds) by transmitting electromagnetic radiation to the atmosphere then analyze the returning “echoes” reflected by weather elements present in the sky.

7. Another product of PAGASA is its watershed monitoring network or Flood monitoring system. Using water level sensors that measures the height of the water level of major river systems, users can monitor impending flooding in major river systems in the Philippines.

8. While we are usually concerned with heavy rainfall events, lack of rain is also a significant condition that we also experience. Weather in different parts of the Philippines can vary significantly for certain years as a response to changing global climate. One of the main climate drivers that affect the Philippines is the El Niño Southern Oscillation (ENSO) or simply El Niño. El Niño  is a significant increase in ocean temperature over the eastern and central Pacific ocean. It occurs at irregular intervals ranging from 2-7 years usually developing in the early months of the year and decay the following year. In the Philippines, El Niño conditions are often characterized by dry and warm to hot climate.

9. Months prior to the onset of El Niño, PAGASA publishes Drought/Dry spell outlook that can warn us of impending dry conditions so we can prepare for such extreme events. Drought/Dry spell assessment is also regularly published to report unusual climate conditions in different parts of the Philippines.

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