Typhoon Kammuri strengthened as it neared southeast Luzon on Sunday night. At 10:00 p.m. EST on Sunday the center of Typhoon Kammuri was located at latitude 13.0°N and longitude 126.0°E which put it about 385 miles (625 km) east- southeast of Manila, Philippines and about 160 miles (260 km) east of Legaspi. Kammuri was moving toward the west at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h). The minimum surface pressure was 959 mb.
Typhoon Kammuri strengthened on Sunday. An ellipitical eye with a mean radius of 30 miles (50 km) cleared out at the center of circulation. A ring of strong thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Kammuri. Storms near the core were generating upper level divergence which was pumping mass away from the typhoon. The removal of mass allowed the surface pressure to decrease.
The wind field around Typhoon Kammuri became more symmetrical on Sunday. Winds to typhoon force extended out 50 miles (80 km) from the center of circulation. Winds to tropical storm force extended out 180 miles (290 km) from the center. The Hurricane Intensity Index (HII) was 17.8. The Hurricane Size Index (HSI) was 19.3 and the Hurricane Wind Intensity Size Index (HWISI) was 37.1. Typhoon Kammuri was capable of causing serious damage.
Typhoon Kammuri will move through an environment favorable for intensification during the next 12 hours. Kammuri will move over water where the Sea Surface Temperature is near 29°C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Typhoon Kammuri could strengthen into the equivalent of a major hurricane before it reaches southeastern Luzon. Kammuri will start to weaken after the center moves over land.
Typhoon Kammuri will move south of a high pressure system over the Western North Pacific Ocean. The high will steer Kammuri toward the west during the next several days. On its anticipated track the center of Typhoon Kammuri will pass between Samar and Catanduanes Island before making landfall near Sorsogon on southeast Luzon. The center of Kammuri will pass near Legaspi, Tabaco and Ligao.
Typhoon Kammuri will be capable of causing major damage in the Philippines. Kammuri will bring strong winds to southeast Luzon. Typhoon Kammuri could also produce winds to near typhoon force in Virac on Catanduanes Island. Kammuri could produce a storm surge of up to 10 feet (3 meters) in locations where the wind blows water toward the coast. Typhoon Kammuri will drop locally heavy rain over southern Luzon. Flash floods could occur, especially in areas of steeper slopes.