Tropical Storm Thelma - Impact

Impact

Tropical Storm Thelma struck the Philippines just five months after the Ultra-Plinian eruption of Mount Pinatubo. The eruption was blamed on the deaths of roughly 800 people and left nearly 1 million homeless. The country's government was reportedly struggling to deal with the scope of the disaster and the addition of Thelma worsened the situation.

Striking the nation as a weak tropical storm, winds from Thelma gusted up to 95 km/h (60 mph) in Tacloban; these winds caused no known damage. The main destructive force associated with the cyclone was the tremendous rainfall it produced. More than 150 mm (6 in) of rain across much of the Visayas, resulting in widespread flooding. In Tacloban, 140.2 mm (5.52 in) fell over a 24 hour span. The heaviest rain occurred on Leyte Island due to orographic lift, which brought large quantities of moisture into the atmosphere over a relatively small area. Additionally, monsoonal winds to the southwest of Thelma converged over the island, further enhancing the precipitation. Near the city of Ormoc, a Philippine National Oil Company rain gauge measured 580.5 mm (22.85 in) of precipitation, the highest in relation to the storm. Of this, approximately 500 mm (20 in) fell during a three-hour span around noon local time on November 5. Initially, residents believed that waterspouts transported tremendous amounts of water to the island, triggering the floods. This notion was quickly dismissed as improbable, however.

The hardest hit region was Leyte where more than 4,000 people lost their lives. A total of 4,446 homes were destroyed while another 22,229 were damaged. The majority of casualties and damage took place in Ormoc when a flash flood devastated the city. At least 81 people were killed outside Ormoc and another 14 went missing; 42 lost their lives in Burauen. The entire island of Leyte was left without power and many areas were isolated as roads were washed away. Another 78 people perished and 70 others were left missing in Negros Occidental. Losses from the storm amounted to $27.67 million; $18.94 million in Leyte and $8.73 million in Negros Occidental. A total of 598,454 people were affected by the storm across the Philippines. An estimated 43,000 people were left homeless.

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