Unding, as PAGASA named it, made landfall very late on the 19th near Naga City with maximum winds of 80 mph (70 kn).
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 120 nautical miles (220 km) south-southwest of Bangkok.
The highest 24-hour rainfall amount reported in Thailand was 251.5 mm at the Prachuap Khiri Khan airport between the afternoon of the 25th and 26th.
[1] 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.
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.
[1] Muifa made landfall very late on the 19th near Naga City with maximum winds of 80 mph (70 kn).
Now moving west-southwest, early on the 22nd Muifa re-strengthened into a 105 mph (91 kn) typhoon 440 miles (710 km) east of Ho Chi Minh City, Vietnam.
[1] At this point, it was forecast by the JTWC that Muifa would strike the southern tip of Vietnam with 65 mph (56 kn) sustained winds.
From there, it would restrengthen to typhoon strength and pass over Thailand and enter the Indian Ocean, slowly weakening as it heads into the Bay of Bengal.
By early on the 26th, a weakening Tropical Depression Muifa was located 250 nm south of Bangkok, Thailand.
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 Ko Pha Ngan, Surat Thani Province at around 1500 UTC on the 25th with winds of 35 mph (30 kn).
[10] Over 3,000 people from Loi Quan Island in the Go Cong Dong District were evacuated to safer areas or shelters when asked by the government.
[11] There was an area of extreme rainfall measuring possibly 40 inches (1,000 mm) just east off the coast of southern Luzon.
Another twelve of those people were killed by a tornado associated with the storm that ripped through the coastal towns in Oriental Mindoro province.
[5] Total damage in the Philippines reached 1.01 billion pesos ($17.96 million 2004 USD, November 26, 2004 exchange rate).
[16] Hội An, which is the town that was declared a world heritage site, was hit by the flood and submerged in more than 6 feet (1.8 meters) of water, and more than 83 old houses were in danger of collapse.
[5] Two hundred sacks of rice and vegetables seeds were distributed by Gloria Macapagal Arroyo, president of the Philippines, throughout Oriental Mindoro.