Typhoon Muifa (2004)
Name=Typhoon Muifa (Unding)
Image location=Typhoon Muifa 2004.jpg
Formed=November 14, 2004
Dissipated=November 26, 2004
Philippines, Vietnam, Thailand
2004 Pacific typhoon season
Typhoon Muifa (international designation: "0425",http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/Besttracks/bst2004.txt] JTWC designation: "29W", designated "Typhoon Unding" by PAGASA) was a typhoon during the
2004 Pacific typhoon season. The name Muifa is taken from the umeblossom.
A disturbance became Tropical Depression 29W on November 14 and strengthened into Tropical Storm Muifa in the early of the 15th when centered east-southeast of
Manila, the Philippines. Muifa turned back onto a west-northwest heading and intensified. It reached typhoon intensity on the 17th just prior to beginning a two-day clockwise loop. Late on the 18th, Muifa's intensity peaked at 130 mph (115 knots), still to the east of the Philippines. Unding, as PAGASA named it, made landfall very late on the 19th near Naga City with maximum winds of 80 mph (70 knots). The storm briefly lost typhoon strength for a day until it regained typhoon intensity in the South China Seaon the 21st. Muifa held onto typhoon status until late on the 23rd when its weakened to a tropical storm once more. By early on the 26th, a weakening Tropical Depression Muifa was located 250 nm south of Bangkok, Thailand. Later that day Muifa turned northward into an environment of increased wind shear and dissipated convert|120|nmi|km south-southwest of Bangkok.
The highest 24 hour rainfall amount from the Philippines was 246.4 mm at
Catanduanesbetween midday the 15th and 16th. The death toll reported from the Philippines was 68 dead, 160 injured, and 69 unaccounted for. A total of 26,238 houses were destroyed and 76,062 damaged; total damage reached $1.0089 billion pesos ($17.96 million 2004 USD). The highest 24-hour rainfall amount reported in Thailandwas 251.5 mm at the Prachuap Khiri Khanairport between the afternoon of the 25th and 26th. Floods and landslides triggered by the typhoon killed about 40 people, and 42 more people were reported missing. [http://www.australiasevereweather.com/cyclones/2005/summ0411.htm Monthly Global Tropical Cyclone Summary November 2004 ] ]
The disturbance that was to become Muifa can be traced back to the afternoon of November 12, when a weak low-pressure system formed over the Western Marianas. [http://www.typhoon2000.ph/stormarchives/2004/unding_report ::..Typhoon2000.com: Michael Padua's Full Detailed Report on Typhoon MUIFA (UNDING) ..:: ] ] It became Tropical Depression 29W on November 14 and strengthened into a tropical storm while moving north-northwestward by early the 15th or late on the 14th when centered convert|550|mi|km|-1 east-southeast of
Manila, Philippines. PAGASA assigned the name Unding to the cyclone on the 14th as it passed the 135th meridian.
The storm's forward speed suddenly decreased from 28
km/hto 13 km/h when it entered an area of weak steering flow in between a high-pressure ridge in development centered over Chinaand a high-pressure ridge weakening south of Japan. On the 16th, the tropical cyclone started drifting north-northeast. Muifa turned back onto a west-northwest heading and intensified. It reached typhoon intensity on the 17th just prior to beginning a two-day clockwise loop. Late on the 18th, Muifa's intensity peaked at 130 mph (115 knots) with a minimum central pressure of 955 mbar (hPa), still to the east of the Philippines.
Muifa made landfall very late on the 19th near Naga City with maximum winds of 80 mph (70 knots). The system ambled across the Philippine Archipelago, dropping down to tropical storm intensity on the afternoon of the 20th. Shortly after Unding left the country, on the 22nd, [http://trmm.gsfc.nasa.gov/publications_dir/philippine_16nov-2dec04.html TRMM ] ] Tropical Depression Merbok [http://www.ifrc.org/cgi/pdf_appeals.pl?04/2604P.pdf Red Cross Red Crescent - Appeals ] ] (Violeta) [http://www.ifrc.org/docs/news/04/04112201/ Over 30 killed as typhoon smashes into Philippines] ] passed over Luzon. Only five days after that, Typhoon Winnie hit Luzon. Luzon was hit a third time by Typhoon Nanmadol on December 2. The Philippines being struck by four tropical systems so close together is a very rare event, and also very damaging.
On the 21st, Muifa regained typhoon intensity in the South China Sea. Now moving west-southwest, early on the 22nd Muifa re-strengthened into a 105 mph (90 knots) typhoon convert|440|mi|km|-1 east of
Ho Chi Minh City, Vietnam. Muifa held onto typhoon status until late on the 23rd when its weakened to a tropical storm once more. At this point, it was forecast by the JTWC that Muifa would strike the southern tip of Vietnam with 65 mph (55 knots) sustained winds. From there, it would restrengthen to typhoon strength and pass over Thailandand enter the Indian Ocean, slowly weakening as it heads into the Bay of Bengal. [http://pdmin.coe-dmha.org/apdr/index.cfm?action=process3&Sub_ID=168&news=15919 Death toll rises from floods rises to 60 in northern Philippines in wake of Typhoon Muifa] ] This did not happen, though.
On the 25th, Tropical Storm Muifa accelerated westward at a 23 mph (21 knots) clip. By early on the 26th, a weakening Tropical Depression Muifa was located 250 nm south of
Bangkok, Thailand. It was still forecast by the JTWC that the depression would enter the Andaman Sea, though much weaker than it was previously forecast, and later strike Indiaas a 40 mph (35 knots) tropical cyclone. [http://www.alertnet.org/thefacts/reliefresources/TSR/29W.htm Typhoon Muifa] ] Once again, this did not occur. Later that day, Muifa turned northward instead and entered an environment of increased wind shear and dissipated 120 nm south-southwest of Bangkok. But according to the Thailand Meteorological Department(TMD) advisories, Tropical Depression Muifa made landfall near Amphoe Tha Chana, Surat Thani Provinceat around 1500 UTC on the 25th with winds of 35 mph (30 knots).
Clark Air Base, an American air base on Luzon, had some 70 United States Marines and others evacuated to Okinawa via plane. Almost 3,000 people were stranded in various places in the Philippines because the ferry crossings between Bicol and the central islands of the Philippines were forbidden to any vessel under 1,000 tons during the storm. [https://metocph.nmci.navy.mil/jtwc/atcr/2004atcr 2004 Annual Tropical Cyclone Report ] ]
The Vietnamese government issued protective orders asking
Petrovietnam, an oil monopoly, to watch over oil drilling facilities. The facilities were also modified to withstand the typhoon. All but a few of the workers were evacuated before the storm came. Boats were also urged to return to shore somewhere else safe. [http://www.planetark.com/avantgo/dailynewsstory.cfm?newsid=28280 Planet Ark - Typhoon Muifa to Skirt Vietnam's Southern Coast ] ] Off-shore fishing also became forbidden. Youths in schools in Ca Mau province had as many days off as needed. [http://vietnamnews.vnanet.vn/2004-11/25/Stories/04.htm Southern Viet Nam to bear the brunt of Typhoon Muifa] ]
A United States-owned gas firm in the
Gulf of Thailand, Unocal Corporations, was forced to shut down and evacuate at least 781 people from the firm. [http://www.planetark.com/avantgo/dailynewsstory.cfm?newsid=28284 Planet Ark - Typhoon Muifa Halts Unocal's Thai Drilling ] ]
There was an area of extreme rainfall measuring possibly convert|40|in|mm just east off the coast of southern Luzon. Much of southern Luzon and other portions of central Philippines received rainfall between 10 to convert|20|in|mm.
Catanduanesand extreme southeastern Luzon might have been blanketed in as much as convert|35|in|mm of rain though. [http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12583 EO Natural Hazards: Typhoon Muifa ] ] Naga City only received a total of convert|8.26|in|mm of rainfall, but it was enough to flood some low-lying areas. The highest 24 hour rainfall amount from the Philippines was 246.4 mm at Catanduanes between midday the 15th and 16th. The passing of four cyclones in a short period of time as mentioned above caused a great deal of damage. Over 1,400 people either died or were missing, mostly from Winnie. Rainfall from all systems was extremely high.
The lowest pressure at Naga City was 986.1 mb early on the 16th. Because of the high rainfall, over 3,000 people had to be evacuated from the lowlands.http://www.abc.net.au/ra/news/stories/s1247867.htm] A wind gust of 48 km/h coming from the north was measured in Naga City.
The death toll reported from the Philippines was 68 dead, 160 injured, and 69 unaccounted for. Most of the casualties were adults, but two
infantssuccumbed to hypothermia, as did an elderly man in Catanduanes. [http://www.nidm.net/disaster_updates-pdf/DISASTERS_UPDATE38.pdf Microsoft Word - DISASTERS_UPDATE38.doc ] ] Another twelve of those people were killed by a tornadoassociated with the storm that ripped through the coastal towns in Oriental Mindoroprovince. [http://unjobs.org/archive/8778526080746741813499793753865926092921 Philippines: GMA releases P5 M for typhoon victims in Oriental Mindoro] ] A total of 26,238 houses were destroyed and 76,062 damaged, with 40 of those homes being in Cataduanes. Some areas reported 80% of the trees and electricity posts were destroyed. Total damage in the Philippines reached 1.0089 billion pesos ($17.96 million 2004 USD, November 26, 2004 exchange rate). At least fifteen provinces were affected by Unding.
Typhoon Muifa had a very devastating impact on Vietnam. The highest 24-hour rainfall amount reported was 251.5 mm at Prachuap Khirikhan between the afternoon of the 25th and 26th. Flooding from the torrential rains was seen in the low-lying places in and around the city of
Hueand nearby districts. [http://vietnamnews.vnanet.vn/2004-11/26/Stories/10.htm http://vietnamnews.vnanet.vn/2004-11/26/Stories/10.htm] . "Vietnam news"]
The cyclone caused the 14 houses to collapse. An additional 85 home's roofs were blown off in Ca Mau. Approximately 500 square kilometres of
paddy rice, shrimp, and fruit treeswere annihilated. In the Bac Lieu Province, 34 houses fell, and another 90 or more were damaged to some degree. Five houses in the Kien Gianprovince were damaged and three fishing vessels sank off the coast. Hoi An, which is the town that was declared a world heritage site, was hit by the flood and submerged in more than 6 feet (2 meters) of water, and more than 83 old houses were in danger of collapse. In all, over 170,000 houses in five provinces were sumbmerged partially. [http://www.chinadaily.com.cn/english/doc/2004-11/29/content_395712.htm Vietnam flood kills 40] ]
Floods and landslides triggered by the typhoon killed about 40 people, and 42 more people were declared missing. At least three people were injured in the
Bac Lieu Province, while one fisherman was reported missing in Kien Giang.
There were many relief operations setup throughout the Philippines very shortly after the cyclone moved into the South China Sea. The
Philippine National Red Cross(PNRC) also mobilized 15 disaster response teams quickly. All together, there were about 1,000 volunteers helping the evacuation of the disaster-stricken families and in the initial relief operation. Two hundred sacks of rice and vegetables seeds were distributed by Gloria Macapagal-Arroyo, president of the Philippines, throughout Oriental Mindoro.
The Philippine president also released a total of $5 million pesos for cleaning up in Oriental Mindoro on November 25. $3 million pesos went to rebuilding homes in
Roxas. The other $2 million pesos went to the provincial government's relief and rehabilitation efforts. A member of the country's congress also gave $10 million pesos to be used for the hoped speedy rehabilitation of the province.
Residents that were evacuated in the coastal communities of Vietnam returned home on the morning of November 25. The families whose homes were damaged began to receive emergency relief aid. But there were also many villages in the mountains which needed urgent relief but which could not be quickly reached.
The name that PAGASA gave to Muifa, Unding, was retired following this storm. The name selected to replace it was "Ulysses".cite web|author=Typhoon 2000|year=2008|title=The Philippine Tropical Cyclone Names|accessdate=2008-06-05|url=http://www.typhoon2000.ph/names.htm]
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