Typhoon Chan-hom (2009)
| Typhoon ( JMA ) | |||
|---|---|---|---|
| Category 2 Typhoon ( SSHWS ) | |||
 |
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| Emergence | May 1, 2009 | ||
| resolution | May 13, 2009 | ||
|
Peak wind speed |
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| Lowest air pressure | 975 hPa ( mbar ) | ||
| dead | 55 direct, 5 indirect, 13 missing | ||
| Property damage | US $ 26.1 million (2009) | ||
|
Affected areas |
Vietnam , Philippines | ||
| Season overview: 2009 Pacific typhoon season |
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Typhoon Chan-hom (International Name: 0902 , JTWC Name: 02W , PAGASA Name: Emong ) was the second tropical cyclone of the 2009 Pacific typhoon season . Chan-hom developed from an area of convective clouds and a weather disturbance southeast of Nha Trang , Vietnam . It combined with the remains of the tropical depression Crising on May 2nd. The system moved northeast, slowly developing into a tropical depression. The next day, the depression turned into a tropical storm, and the Regional Specialized Meteorological Center in Tokyo named it Chan-hom . This name was proposed by Laos and means a tree. On May 6, the storm intensified to a typhoon equivalent to Category 1 on the Saffir-Simpson Hurricane Wind Scale and a day later to Category 2. After Chan-hom had moved across northern Luzon , the typhoon weakened to a severe one tropical storm. The storm then moved out to the open Pacific east of the Philippines, where it continuously lost its force and dissolved on May 10th.
Storm course
The system that evolved into Typhoon Chan-hom originated as a weak tropical disturbance southeast of Nha Trang, Vietnam in the South China Sea . Early the next morning the Joint Typhoon Warning Center (JTWC) reported that the circulation in the center near the ground was partially free and that it was prolonged. The deep convection was north of the center and began to wrap around both the western and eastern parts of the system. At this point, the circulation was in an area of low vertical wind shear , while an anti-cyclone at altitude was east of the ground-level circulation center. During the day, the Japan Meteorological Agency (JMA) announced that the fault had become the fourth tropical depression of the year in the western North Pacific. At the end of the day, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on the system, which now had a well-defined, low-level circulation center. This had pushed itself under the expanding and now better organized convection zone.
On the afternoon of May 3rd, the JMA reported that the low pressure area had intensified into a tropical storm and named the storm Chan-hom . At the same time, the JTWC classified the system as Tropical Depression 02W. The JTWC reported that the low pressure area was forming in the monsoon trough and developing slowly, being nearly stationary since the TCFA was announced. It was now under the influence of moderate vertical wind shear and a near-surface high pressure ridge southeast of the system. The JTWC reported the intensification to a tropical storm six hours later than the JMA. This is unusual because the Joint Typhoon Warning Center makes the classification based on one-minute continuous wind speeds, in contrast to the Japan Meteorological Agency, which determines the continuous wind speeds at an interval of ten minutes. That is why the wind strengths announced from Pearl Harbor are regularly higher than those of the RMSC in Tokyo.
The system then moved eastward and intensified into a typhoon on May 6th after a pause. Equivalent to category 2 of the Saffir-Simpson hurricane wind scale , which is not officially used in the western Pacific Ocean, the typhoon crossed the coastline in the province of Pangasinan in northern Luzon and was downgraded to a tropical storm over land.
Chan-hom - known as Emong in the Philippines, moved straight across the provinces of Pangasinan, La Union , Ilocos Sur , Benguet , Nueva Vizcaya , Ifugao , the Mountain Province , Kalinga, and Isabela .
The storm reached east of the Philippines over the waters of the open Pacific Ocean , but was confronted with an area with moderate wind shear, so that it weakened to a tropical low pressure area. Both the JTWC and the JMA issued their final warnings about the system on May 9th.
Preparations
Vietnam
When Chan-hom formed in the South China Sea, the Vietnamese authorities warned shipping and recommended avoiding areas near the storm. Fourteen provinces along the state's coast have been warned of high waves. The ships lying in the port were forbidden to set sail because a wave height of up to seven meters was expected.
Philippines
PAGASA warned residents of low-lying coastal areas and those who lived on mountain slopes of the storm, which was locally named Emong . The population of the affected areas was asked to take appropriate countermeasures against storm surges , flash floods and landslides . Philippine President Gloria Macapagal-Arroyo instructed the National Disaster Coordination Council to provide the public with the latest information about the arrival of the typhoon every hour. PAGASA set the warning signals number 2 and 3. These warning levels applied to most of the north and center of Luzon, where PAGASA was expecting the Emong landfall on May 7th. Signal number 2 warns of wind speeds of 61 to 100 km / h and signal number 3 is triggered where wind speeds of 100 to 185 km / h are expected.
All storm warnings for the Philippines were lifted after the typhoon passed through on May 8 at 10:30 a.m. local time (02:30 UTC ).
Effects
Vietnam
No damage to buildings by Chan-hom was reported in Vietnam.
Philippines
In the Philippines, the typhoon brought 48 hours of continuous rain for large parts of Luzon between May 6th and 8th, which peaked on May 7th. Wind speeds of 85 to 140 km / h and heavy rain with a rainfall of more than 200 mm within 24 hours led to devastation in the provinces of Abra , Quirino , Cagayan , Apayao , Ilocos Norte , Aurora . In Zambales more than 135 mm of precipitation fell, also over Pampanga , Nueva Ecija , Tarlac , Bulacan , Bataan , Metro Manila and parts of the south of the island the rain was very heavy. Moderate rainfall was recorded in Quezon Province and the Bicol Region . The Cagayan stepped over its banks.
A state of emergency has been declared for the west of Pangasinan Province . Emong killed at least 16 people in that province . They drowned, died under the rubble of their collapsing houses, or were hit by flying parts. In the city of Anda , the typhoon covered 90% of house roofs, mango trees were uprooted and fish cultures were washed into the sea. At least ten people were killed in landslides in Ifugao Province. Bridges between Lamut and Bagabag collapsed. In the province of Isabela, in San Mateo, "all the workhorses " drowned when the river flowing through the town overflowed.
The center of the storm swept over Bolinao at well over 150 km / h and devastated the city and the surrounding villages. A large part of the very poor rural population lost their belongings. Many of the large mango and saraguelas trees were uprooted and banana trees were broken.
Preliminary reports by the National Disaster Coordinating Council dated midday on May 9th (local time) put property damage to agriculture , infrastructure and private wealth at 380 million Philippine pesos . According to official censuses, a total of 64,347 people were directly affected by the effects of the typhoon in the Philippines at this time, 2,879 houses were completely destroyed in the Pangasinan province and 4,640 were damaged. Up to this point in time, eleven landslides had been registered in the two provinces of Zambales and Ifugao.
Malaysia
A man was killed by a falling tree on an island off the coast of Malaysia . The tree was felled by a lightning strike . The man was there because he was working as a night watchman for a production company that was producing a reality show on the island called Expedition Robinson .
Individual evidence
- ^ Tropical Storm Chan-hom . In: Joint Typhoon Warning Center . United States Naval Research Laboratory . May 1, 2009. Retrieved May 5, 2009.
- ↑ a b c Significant Tropical Weather Advisory for the Western and Southern Pacific Oceans 02-05-09 06z . Joint Typhoon Warning Center . May 2, 2009. Archived from the original on May 2, 2009. Retrieved on May 5, 2009.
- ↑ JMA WWJP25 02-05-09 18z . Japan Meteorological Agency . May 2, 2009. Archived from the original on May 2, 2009. Retrieved on May 5, 2009.
- ↑ Tropical Cyclone Formation Alert 02-05-09 23z . Joint Typhoon Warning Center . May 2, 2009. Archived from the original on May 2, 2009. Retrieved on May 5, 2009.
- ^ Tropical Storm Chan-hom advisory 03-05-09 12z . Japan Meteorological Agency . May 3, 2009. Archived from the original on May 3, 2009. Retrieved on May 5, 2009.
- ↑ a b Prognostic reasoning for Tropical Depression 02W. . Joint Typhoon Warning Center . May 3, 2009. Retrieved on May 5, 2009. ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Quang Duan - Mai Vong: Chan Hom strengthens, ships take evasive action . Thanhnien News . May 6, 2009. Retrieved May 9, 2009.
- ↑ Staff Writer: Storm heads towards the Philippines, Vietnam safe . Reuters. May 7, 2009. Archived from the original on May 9, 2009. Retrieved on May 7, 2009.
- ^ Inquirer Northern Luzon: 'Emong' leaves 26 fatalities in north Luzon . Philippine Daily Inquirer . 2009-05-2009. Archived from the original on May 15, 2009. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Accessed in 2009-05-2009.
- ↑ 'Emong' lashes Pangasinan; fells power lines . Philippine Daily Inquirer . May 8, 2009. Archived from the original on May 10, 2009. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved May 8, 2009.
