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Chan-Hom Weakens to Tropical Depression after Pummelling Philippines

May 11th, 2009 Category: Tropical Cyclones

Tropical Depression 02W (Chan-Hom) - May 10th, 2009

Tropical Depression 02W (Chan-Hom) - May 10th, 2009

Track of TD 02W - May 11th, 2009

Track of TD 02W

Chan-Hom (02W), which has weakened to a tropical depression, has tracked northwestward at 4 knots over the past six hours.

It now located approximately 265 nautical miles south of Okinawa, Japan, after ravaging the northern Philippines last week.

The National Disaster Coordinating Council (NDCC) said 13 people were missing and more than 160,000 were adversely affected when Chan-Hom pummelled more than 30 northern provinces beginning on May 7th.

The death toll from the storm has reached 43 people; the majority of which drowned in swollen rivers or were buried in landslides, reports the Asia-Pacific News.

Most of the casualties occured in Pangasinan and Ifugao, the provinces hit hardest by the storm. At least 21 people were killed in Pangasinan, while 16 fatalities were reported in Ifugao.

The agency said damage to agriculture and infrastructure was estimated at 781.70 million pesos (16.28 million dollars) and could go up as rescuers reached areas isolated by the typhoon.

The NDCC added that power has been restored in most of the areas hit by the typhoon, although some rivers remained swollen and roads impassable.

Since moving past the Philippines, animated multispectral imagery indicates the fully exposed low level circulation center (LLCC) has significantly elongated. Remnant convection to the northeast has been further reduced and sheared, and is now over 90 nm detached to the east.

TD 02W enhanced image - May 10th, 2009

TD 02W enhanced image - May 10th, 2009

TD 02W multispectral imagery - May 11th, 2009 © JTWC

multispectral imagery - May 11th, 2009

Environmental analysis indicates TD02W is under moderate to strong vertical wind shear (VWS) and is tracking over cooling sea surface temperatures (SST) below 25 celsius. Maximum significant wave height 10 feet.

Chan-hom is expected to move very slowly north along the western edge of a low level ridge (or become quasi-stationary) then dissipate by TAU 12.

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