Typhoon Reviewer PDF

TYPHOON Development of Typhoon Tropical Cyclone - the general term that refers to all storms that originate over warm tropical oceans. - Typhoons, hurricanes, and cyclones Typhoon vs Hurricane vs Cyclone - These are all essentially the same...

TYPHOON Development of Typhoon Tropical Cyclone - the general term that refers to all storms that originate over warm tropical oceans. - Typhoons, hurricanes, and cyclones Typhoon vs Hurricane vs Cyclone - These are all essentially the same but are called different names based on the location. 1. Typhoon- happen in the Northwest Pacific 2. Hurricane- occur in the North Atlantic and the central/eastern Pacific 1. Evaporation of water at ocean 3. Cyclone- form in the South Pacific surface temperature of 26.5 °C or and Indian Ocean higher. 2. Warm, moist air rises from the ocean Characteristics of a Typhoon surface, creating a low-pressure area (LPA) near the ocean surface. 3. Air from surrounding high-pressure areas (HPA) rushes toward the low-pressure area. 4. As the warm air rises toward the cooler parts of the upper atmosphere, it cools off and the water vapor begins to condense to form clouds. 5. More clouds form and wind speed picks up as the Coriolis effect 1. Eye- a roughly circular area of causes the air to spiral as it rises. comparatively light winds and fair weather. Conditions for Typhoon 2. Eyewall- maximum wind zone, It is a - The conditions are continuous ring of tall thunderstorms that evaporation and water cycles, produce heavy rains and usually the differences in air pressure, and strongest winds. convergent winds 3. Rainbands- Are curved bands of 1. Continuous Evaporation and clouds and thunderstorms that trail Water Cycle away from the eye wall in a spiral. - Heat causes water to evaporate, saturating the clouds and making them  heavy with moisture to become rain d. Rain gauge- collects and measure the amount of rain over period of time 2. Differences in Air Pressure - Meteorologists closely monitor weather instruments to check the weather conditions e. Barometer- measures air pressure Instruments Used to Monitor Weather a. Anemometer- measures the wind spind. 3. Convergent Winds - The difference between high-pressure and b. Wind Vane- shows the direction of low-pressure air causes the the wind creation of winds. - High speed winds moving in a particular area are called convergent wind Why is the Philippines Typhoon Prone? - The Philippines is located within the typhoon belt of the Pacific. c. Thermometer- measures air - Lies in the Intertropical Convergence temperature Zone (ITCZ) - ITCZ: this is the area where northern and southern winds  meet. It is also known as the - Recent changes in rainfall patterns breeding ground of typhoons that include heavy rains brought by - Countries that is also located in the habagat urged to come up with a ITCZ are typhoon prone. new warning system - About 20 typhoons pass through the - In 2012, they released a new set of country each year usually from June rainfall advisories. to November. Tropical Cyclone Warning Signal (TCWS) Philippine Atmospheric, Geophysical - Old system used for measuring the and Astronomical Services (PAGASA) intensity of storms - Government agency responsible for - Each level corresponds to a range of monitoring typhoons and weather wind speed in kilometers per hour disturbances, weather forecasting, (kph) and the approximate number flood control, and astronomy of hours of strong winds research. - Under Department of Science and Technology (DOST) Philippine Area of Responsibility (PAR) Refer to pp. 150-151 Effect of Landform To Typhoon - Landforms such as mountains can weaken typhoons by disrupting the flow of air and causing friction, which can slow down or weaken the storm. - PAGASA is responsible for - Orographic precipitation: produced monitoring tropical cyclone when moist air is lifted as it moves occurrences within the PAR over a mountain range. - When the weather reports announce that a storm just entered PAR, it means it is still at sea and has not yet fallen over land. - May experience fair weather and sunny day Weather Warning System refer to page 149 Effect of Bodies of Water To Typhoon - Large water forms are very important to a typhoon since it has the power to control whether the typhoon shall be strong or weak.  Typhoons get their strength from warm waters while lose strength in cold waters. - Storm surge is a rise in sea levels during a typhoon. The storms produce strong winds that push water into shore Preparation for Typhoon Prepare for such an event by doing the following: 1. Listen to the radio for information. 2. Unplug appliances if you can. 3. Evacuate when told to do so by your evacuation officer/warden or local, regional, or national authorities. 4. Bring your disaster preparedness kit Book: Exploring Life Through Science with you as you evacuate to a safer pp. 143-155 area. 5. Do not use elevators. 6. If there is flooding or a flood warning, evacuate to a higher area. 7. If you are unable to evacuate and there is no flooding or flood warning, go to the lowest possible interior room that does not have windows or glass doors. 8. If you are unable to evacuate and there is flooding or a flood warning, use the stairs to go to a higher level and stay in an interior room that does not have windows or glass doors.