The State of Region Where Typhoon Haiyan Struck

   It occurred on November 4, 2013 and reached the Philippines on November 7, just before landing on Samir Island in the Philippines, developing an average wind speed of 87m/s (313.2km/h) and a maximum wind speed of 105m/s (380km/h). As it passed through the central Philippines, its power gradually strengthened, reaching an average wind speed of 315 km/h (87.5 m/s) and a maximum wind speed of 379 km/h per minute. This is above the 5th grade (wind speed of 260km or more per hour) super typhoon, and was also the highest level in the history of typhoon observation at the U.S. Joint Typhoon Warning Center (JTWC). Until the moment it escaped from the Philippines, the intensity of the fifth-grade super typhoon remained at the same. A weather observatory designed to withstand wind speeds of 103m/s (200km/h) located in the Philippines was destroyed by Haiyan. This fact shows how powerful it was. 

    In particular, the central coastal area, including Tacloban City, was severely damaged by the storm tsunami. Haiyen was unusually a type of storm tsunami rushing in at once in just a few minutes. So, the storm tsunami, which had been flocking at once, approached the bay and became a large tsunami-like wave, and swept the coast. As a result, in Tacloban City, many residents who were evacuated to the lower floors such as large hospitals and cathedrals to avoid the storm were submerged in tsunamis.