On November 3, a low-pressure area formed 45 nautical miles south-southeast of Pohnpei. The Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert. A few hours later, the JTWC designated the depression as "31W". At 10 AM JST the next day, the Japan Meteorological Agency named 31W as Haiyan. Haiyan rapidly intensified as it headed towards Palau and the Philippines. Rapid deepening occurred and it became a Category 5 super typhoon as it entered the Philippine area of responsibility, and was named Yolanda. Haiyan reached a barometric pressure below 900 mbars (895 mbars), the first since Typhoon Megi in 2010. At one of the evacuation centers the storm brought down the roof of a church in Leyte resulting in at least 20 deaths.
A total of 905,353 people have been affected by the typhoon since late November 7th. Later that day, the death toll rose to three. During the afternoon of November 8, the death toll rose to 23. On November 9, it was reported that a total of 56 were dead as Haiyan moved across the central Philippines. Haiyan made landfall in Guiuan, Eastern Samar at 04:45am 2045 (UTC). More than 30 trees were uprooted during that time and no casualties have been reported. State forecasters said that nearly 800,000 people were forced to flee their homes and damage was believed to be extensive. About four million people were affected. In some places in Central Visayas, school will reopen on November 15. It was reported that there was one dead and one injured in Batangas due to high waves which is now a total of 139. A total of 71,623 families (330,914 persons) are being served inside 1,223 evacuation centers during that time. On November 10, 11,000 houses were reported destroyed in Aklan with seven casualties and the death toll rose to 151. The NDRRMC reported that a total of 255 people died from Typhoon Yolanda on November 11. By 0900 UTC, November 11, estimates rose to over 10,000 deaths, with the vast majority in Tacloban.