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Tropical Storm Yagi Drops Heavy Rain on Northern Luzon

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Tropical Storm Yagi dropped heavy rain on parts of northern Luzon on Monday.  At 11:00 a.m. EDT on Monday the center of Tropical Storm Yagi was located at latitude 17.5°N and longitude 121.7°E which put the center about 25 miles (40 km) south of Tuguegarao, Philippines.  Yagi was moving toward the north-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 996 mb.

The center of Tropical Storm Yagi moved across northern Luzon on Monday.  Storms near the center of Yagi’s circulation dropped heavy rain on parts of northern Luzon.  There were reports that heavy rain caused floods and landslides in some locations.  There were also reports that the floods and landslides caused an unknown number of deaths.

The circulation around Tropical Storm Yagi weakened gradually as Yagi move across northern Luzon.  Thunderstorms were still occurring near the center of Yagi’s circulation.  Thunderstorms were also occurring in bands revolving around the center of circulation.  Storms near the center of Yagi generated upper level divergence that pumped mass away from the tropical storm.

Winds to tropical storm force extended out 70 miles (110 km) from the center of Tropical Storm Yagi.

Tropical Storm Yagi will move around the western part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Yagi toward the northwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Yagi will move over the South China Sea in 12 hours.  A second high pressure system that is over China will steer Yagi toward the west on Tuesday.

Tropical Storm Yagi will continue to weaken gradually during the next few hours while it moves across northern Luzon.  Yagi will move into an environment that will be favorable for intensification when it moves over the South China Sea.  Yagi will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the middle of an upper level ridge over the South China Sea.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Tropical Storm Yagi is likely to intensify after it moves over the South China Sea.  Yagi is likely to strengthen to a typhoon by the middle of the week.

Tropical Storm Yagi will continue to drop heavy rain over northern Luzon during the next few hours.  Heavy rain is likely to cause additional floods and landslides.

Typhoon Ewiniar Moves Away From Luzon

Typhoon Ewiniar moved away from Luzon on Monday. At 11:00 a.m. EDT on Monday the center of Typhoon Ewiniar was located at latitude 17.4°N and longitude 124.3°E which put it about 185 miles (300 km) east of Tuguegarao, Philippines. Ewiniar was moving toward the northeast at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 100 m.p.h. (160 km/h) and there were wind gusts to 120 m.p.h. (195 km/h). The minimum surface pressure was 966 mb.

After intensifying rapidly on Sunday, Typhoon Ewiniar showed signs of weakening on Monday. A small eye with a diameter of 5 miles (8 km) was still present at the center of Ewiniar’s circulation. However, there were breaks in the ring of thunderstorms surrounding the eye. Storms near the center of Ewiniar still were generating upper level divergence that was pumping mass away from the typhoon. Bands of showers and thunderstorms were revolving around the center of Typhoon Ewiniar.

The circulation around Typhoon Ewiniar was small. Winds to typhoon force extended out 20 miles (30 km) from the center of Ewiniar’s circulation. Winds to tropical storm force extended out 75 miles (120 km) from the center of circulation.

Typhoon Ewiniar will move through an environment that will become less favorable for intensification during the next 24 hours. Ewiniar will move over water where the Sea Surface Temperatures are near 30°C. An upper level trough near the east coast of China will produce southwesterly winds that will blow toward the top of Ewiniar’s circulation. Those winds will cause the vertical wind shear to increase. Since the circulation around Ewiniar is small, an increase in wind shear will have a larger effect on the typhoon. Typhoon Ewiniar is likely to weaken during the next 24 hours when the vertical wind shear increases.

Typhoon Ewiniar will move around the northwestern part of a high pressure system over the Western North Pacific Ocean. The high pressure system and the upper level trough near the east coast of China will steer Ewiniar toward the northeast during the next 24 hours. On its anticipated track, Typhoon Ewiniar will continue to move farther away from Luzon. Ewiniar will pass southeast of the Ryukyu Islands during the next few days.

Elsewhere, Tropical Cyclone Remal continued to drop heavy rain on Bangladesh. There were reports that Remal caused fatalities in Bangladesh. At 5:00 a.m. EDT on Monday the center of Tropical Cyclone Remal was located at latitude 23.1°N and longitude 89.2°E which put it about 85 miles (140 km) southwest of Dhaka, Bangladesh. Remal was moving toward the north-northeast at 5 m.p.h. (8 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 979 mb.

Tropical Storm Ma-on Develops near Northern Luzon

Tropical Storm Ma-on developed near northern Luzon on Sunday night. At 5:00 a.m. EDT on Monday the center of Tropical Storm Ma-on was located at latitude 16.3°N and longitude 123.4°E which put it about 100 miles (160 km) southeast of Tuguegarao, Philippines. Ma-on was moving toward the west at 11 m.p.h. (17 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 997 mb.

Former Tropical Depression 10W strengthened to Tropical Storm Ma-on just to the east of northern Luzon on Sunday night. The distribution of thunderstorms in Ma-on continued to be asymmetrical. Most of the thunderstorms were in bands in the southern half of Ma-on’s circulation. The bands in the northern half of the circulation consisted primarily of showers and lower clouds. A strong upper level ridge over China was producing strong northerly winds that were blowing toward the top of Tropical Storm Ma-on. Those winds were causing moderate vertical wind shear and the wind shear was causing the asymmetrical distribution of thunderstorms.

Tropical Storm Ma-on will move through an environment favorable for intensification during the next 12 hours. Ma-on will move over water where the Sea Surface Temperatures are 30˚C. The upper level ridge over China will continue to produce northerly winds that will blow toward the top of Ma-on’s circulation. However, Tropical Storm Ma-on could strengthen during the next 12 hours. Ma-on will weaken when the center passes over northern Luzon, but it could strengthen again over the South China Sea later this week.

Tropical Storm Ma-on will move around the southwestern part of a high pressure system over the Western North Pacific Ocean. The high pressure system will steer Ma-on toward the west-northwest during the next 24 hours. On its anticipated track Tropical Storm Ma-on will hit northern Luzon in 12 hours. Ma-on will bring gusty winds and locally heavy rain to northern Luzon. Heavy rain could cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Tokage formed southeast of Japan. At 5:00 a.m. EDT on Monday the center of Tropical Storm Tokage was located at latitude 25.5°N and longitude 151.6°E which put it about 1010 miles (1635 km) southeast of Tokyo, Japan. Tokage was moving toward the north at 11 m.p.h. (17 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 998 mb.