Tag Archives: Manila

Typhoon Man-Yi Strengthens to Equivalent of a Major Hurricane

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Typhoon Man-yi strengthened to the equivalent of a major hurricane as it moved toward the Philippines on Friday.  At 4:00 p.m. EST on Friday the center of Typhoon Man-yi was located at latitude 12.3°N and longitude 127.2°E which put the center about 490 miles (790 km) east-southeast of Manila, Philippines.  Man-yi was moving toward the west-northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 125 m.p.h. (200 km/h) and there were wind gusts to 155 m.p.h. (250 km/h).  The minimum surface pressure was 952 mb.

Typhoon Man-yi intensified to the equivalent of a major hurricane on Friday.  A circular eye with a diameter of 25 miles (40 km) was at the center of Man-yi’s circulation.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Man-yi’s circulation.  Storms near the center of Man-yi generated strong upper level divergence that pumped mass away from the typhoon in all directions.  The removal of large quantities of mass caused the surface pressure to decrease rapidly.

The circulation around Typhoon Man-yi was very symmetrical.  Winds to typhoon force extended out 30 miles (50 km) from the center of Man-yi’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Typhoon Man-yi.

The Hurricane Intensity Index (HII) for Typhoon Man-yi was 23.6.  The Hurricane Size Index (HSI) was 10.3 and the Hurricane Wind Intensity Size Index (HWISI) was 33.9.  Typhoon Man-yi was similar in size and intensity to Hurricane Dennis when Dennis hit Northwest Florida in 2005.

Typhoon Man-yi will move through an environment favorable for intensification during the next 24 hours.  Man-yi will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Man-yi is likely to continue to intensify during the next 24 hours.

Typhoon Man-yi will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Man-yi toward the west-northwest during the next 24 hours.  On its anticipated track, Typhoon Man-yi will reach southeastern Luzon in less than 18 hours.

Typhoon Man-yi will bring very strong winds and heavy rain to Luzon.  Heavy rain will cause flash floods and mudslides.  Man-yi could also cause a storm surge of up to 13 feet (4 meters) along the coast of Luzon.  Luzon has already been hit by a series of in recent weeks.  Typhoon Man-yi is capable of causing regional major damage.  Man-yi will seriously set back efforts to recover from the previous typhoons.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Usagi was bringing wind and rain to Taiwan.  At 4:00 p.m. EST on Friday the center of Tropical Storm Usagi was located at latitude 22.5°N and longitude 120.3°E which put the center about 25 miles (40 km) southwest of Kaohsiung, Taiwan.  Usagi was moving toward the north-northeast at 10 m.p.h. (16 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 998 mb.  Heavy rain is likely to cause flash floods in Taiwan.

Man-yi Strengthens to a Typhoon East of the Philippines

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Former Tropical Storm Man-yi strengthened to a typhoon east of the Philippines on Thursday.  At 10:00 p.m. EST on Thursday the center of Typhoon Man-yi was located at latitude 10.7°N and longitude 131.3°E which put the center about 795 miles (1280 km) east-southeast of Manila, Philippines.  Man-yi was moving toward the west at 18 m.p.h. (30 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 976 mb.

Former Tropical Storm Man-yi strengthened to a typhoon over the Western North Pacific Ocean east of the Philippines on Thursday.  The inner end of a rainband wrapped around the center of Man-yi’s circulation.  A circular eye with a diameter of 23 miles (37 km) formed at the center of Typhoon Man-yi.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Man-yi’s circulation.  Storms near the center of Man-yi generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

Typhoon Man-yi will move through an environment favorable for intensification during the next 24 hours. Man-yi will move over water where where the Sea Surface Temperatures are near 29°C.   It will move under the middle of an upper level ridge over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Man-yi will intensify during the next 24 hours.  Man-yi could intensify rapidly.  Typhoon Man-yi is likely to strengthen to the equivalent of a major hurricane.

Typhoon Man-yi will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Man-yi toward the west-northwest during the next 24 hours.  On its anticipated track, Typhoon Man-yi will move toward Luzon.  Man-yi could approach Luzon in 36 hours.

Elsewhere over the Western North Pacific Ocean, Typhoon Usagi moved toward Taiwan.  At 10:00 p.m. EST on Thursday the center of Typhoon Usagi was located at latitude 20.2°N and longitude 120.2°E which put the center about 145 miles (235 km) south of Kaohsiung, Taiwan.  Usagi was moving toward the north-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 977 mb.

Tropical Storm Man-yi Brings Gusty Winds to Guam

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Tropical Storm Man-yi brought gusty winds to Guam on Tuesday.  At 4:00 p.m. EST on Tuesday the center of Tropical Storm Man-yi was located at latitude 12.5°N and longitude 144.4°E which put the center about 40 miles (65 km) southeast of Guam.  Man-yi was moving toward the southwest at 18 m.p.h. (30 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 994 mb.

Tropical Storm Warnings were in effect for Guam, Rota, Tinian, and Saipan.

Tropical Storm Man-yi brought gusty wind to Guam and the Marianas on Tuesday.  A weather station at the Guam International Airport reported a sustained wind speed of 30 m.p.h. (50 km/h) and a wind gust of 48 m.p.h. (77 km/h) on Tuesday.

The circulation around Tropical Storm Man-yi was somewhat disorganized.  There were not many thunderstorms near the center of Man-yi’s circulation.  Thunderstorms were occurring in bands in the southern side of the center of Tropical Storm Man-yi.  Bands in the northern side of Man-yi’s circulation consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Man-yi was small.  Winds to tropical storm force extended out 85 miles (135 km) from the center of Man-yi’s circulation.

Tropical Storm Man-yi will move through an environment somewhat favorable for intensification during the next 24 hours.  Man-yi will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southern side of an upper level ridge over the Western North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Man-yi’s circulation.  Those winds will cause some vertical wind shear. The wind shear will inhibit intensification, but the shear may not be enough to prevent intensification. Tropical Storm Man-yi could intensify during the next 24 hours.

Tropical Storm Man-yi will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Man-yi toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Man-yi will move away from the Marianas.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Usagi strengthened east of the Philippines, Tropical Depression Yinxing moved inland over Vietnam, and Tropical Storm Toraji was spinning over the South China Sea southeast of Hong Kong.

At 4:00 p.m. EST on Tuesday the center of Tropical Storm Usagi was located at latitude 15.0°N and longitude 128.3°E which put the center about 530 miles (850 km) east of Manila, Philippines.  Usagi was moving toward the west at 17 m.p.h. (28 km/h).  The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h).  The minimum surface pressure was 987 mb.

At 10:00 a.m. EST on Tuesday the center of Tropical Depression Yinxing was located at latitude 14.0°N and longitude 108.2°E which put the center about 145 miles (235 km) south of Da Nang, Vietnam.  Yinxing was moving toward the west at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1004 mb.

At 4:00 p.m. EST on Tuesday the center of Tropical Storm Toraji was located at latitude 20.1°N and longitude 116.8°E which put the center about 245 miles (395 km) southeast of Hong Kong.  Toraji was moving toward the west-northwest at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 997 mb.

Tropical Storm Usagi Forms East of the Philippines

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Tropical Storm Usagi formed over the Western North Pacific Ocean east of the Philippines on Monday.  At 4:00 p.m. EST on Monday the center of Tropical Storm Usagi was located at latitude 13.0°N and longitude 134.2°E which put the center about 945 miles (1525 km) east of Manila, Philippines.  Usagi was moving toward the west at 17 m.p.h. (28 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 991 mb.

Another tropical storm formed east of the Philippines on Monday.  Former Tropical Depression Twentyseven-W strengthened and the Japan Meteorological Agency designated the system as Tropical Storm Usagi.  More thunderstorms formed near the center of Usagi’s circulation.  However, the distribution of thunderstorms in Tropical Storm Usagi was asymmetrical.  Many of the thunderstorms were occurring in bands in the western half of Usagi’s circulation.  Bands in the eastern half of Tropical Storm Usagi consisted primarily of showers and lower clouds.  Storms near the center of Usagi generated upper level divergence that pumped mass away to the west of the tropical storm.

The circulation around Tropical Storm Usagi was small.  Winds to tropical storm force extended out 50 miles (80 km) from the center of Usagi’s circulation.

Tropical Storm Usagi will move through an environment favorable for intensification during the next 24 hours.  Usagi will move over water where the Sea Surface Temperatures are near 30°C.   It will move under the southern side of an upper level ridge over the Western North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Usagi’s circulation.  Those winds will cause some vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Usagi will intensify during the next 24 hours.  Usagi could strengthen to a typhoon on Tuesday.

Tropical Storm Usagi will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Usagi toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Usagi will move toward the Philippines.

Elsewhere over the Western North Pacific Ocean, former Typhoon Toraji weakened as it moved away from the Philippines, Tropical Storm Yinxing approached the coast of Vietnam, Tropical Storm Watches were issued in the Marianas for Tropical Storm Man-yi.

At 4:00 p.m. EST on Monday the center of Tropical Storm Toraji was located at latitude 18.5°N and longitude 118.7°E which put the center about 420 miles (675 km) southeast of Hong Kong.  Toraji was moving toward the west-northwest at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 985 mb.

At 4:00 p.m. EST on Monday the center of Tropical Storm Yinxing was located at latitude 14.6°N and longitude 109.6°E which put the center about 130 miles (210 km) southeast of Da Nang, Vietnam.  Yinxing was moving toward the south-southwest at 10 m.p.h. (16 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 999 mb.

At 4:00 p.m. EST on Monday the center of Tropical Storm Man-yi was located at latitude 14.0°N and longitude 150.5°E which put the center about 430 miles (695 km) east of Guam.  Man-yi was moving toward the west-southwest at 8 m.p.h. (13 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 992 mb.

Tropical Storm Watches were in effect for Guam, Rota, Tinian and Saipan.

Tropical Storm Toraji Rapidly Develops East of the Philippines

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Tropical Storm Toraji rapidly developed over the Western North Pacific Ocean east of the Philippines on Saturday.  At 4:00 p.m. EST on Saturday the center of Tropical Storm Toraji was located at latitude 15.1°N and longitude 127.7°E which put the center about 495 miles (795 km) east of Manila, Philippines.  Toraji was moving toward the west at 20 m.p.h. (32 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 990 mb.

A low pressure system over the Western North Pacific Ocean east of the Philippines strengthened rapidly on Saturday and the Japan Meteorological Agency designated the system as Tropical Storm Toraji.  The circulation around Tropical Storm Toraji organized quickly on Saturday.  Bands of showers and thunderstorms were revolving around the center of Toraji’s circulation.  Storms near the center of Toraji generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Toraji was small.  Winds to tropical storm force extended out 65 miles (105 km) from the center of Toraji’s circulation.

Tropical Storm Toraji will move through an environment favorable for intensification during the next 24 hours.  Toraji will move over water where the Sea Surface Temperatures are near 30°C.  It will move under axis of an upper level ridge over the Western North Pacific Ocean.  The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear.  Tropical Storm Toraji will intensify during the next 24 hours.  Toraji could intensify rapidly at times.  Tropical Storm Toraji is likely to strengthen to a typhoon on Sunday.

Tropical Storm Toraji will move around the southern side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Toraji toward the west-northwest during the next 24 hours.  On its anticipated track Tropical Storm Toraji will approach Luzon in a little over 24 hours.

Tropical Storm Toraji is likely to be a typhoon when it reaches northern Luzon.  Toraji will bring strong winds and locally heavy rain to northern Luzon.  Heavy rain is likely to cause flash floods and mudslides.  Northern Luzon is trying to recover from two recent typhoons.  Typhoon Toraji is likely to seriously disrupt those recovery activities.

Elsewhere over the Western North Pacific Ocean, Typhoon Yinxing passed south of Hong Kong and Tropical Storm Man-yi formed east of the Marianas.

At 4:00 p.m. EST on Saturday the center of Typhoon Yinxing was located at latitude 19.1°N and longitude 113.1°E which put the center about 220 miles (360 km) south-southwest of Hong Kong.  Yinxing was moving toward the west-northwest at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 150 m.p.h. (240 km/h).  The minimum surface pressure was 960 mb.

At 4:00 p.m. EST on Saturday the center of Tropical Storm Man-yi was located at latitude 16.1°N and longitude 156.1°E which put the center about 720 miles (1160 km) east of Saipan.  Man-yi was moving toward the northwest at 25 m.p.h. (40 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 999 mb.

Yinxing Strengthens to a Typhoon

Former Tropical Storm Yinxing strengthened to a typhoon over the Western North Pacific Ocean east of the Philippines.  At 10:00 a.m. EST on Monday the center of Typhoon Yinxing was located at latitude 14.8°N and longitude 129.5°W which put the center about 610 miles (980 km) east of Manila, Philippines.  Yinxing was moving toward the northwest at 21 m.p.h. (33 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 987 mb.

Former Tropical Storm Yinxing strengthened to a typhoon east of the Philippines on Monday.  The inner end of a rainband wrapped around the center of Yinxing’s circulation.  An eye appeared to be forming at the center of Typhoon Yinxing.  Bands of showers and thunderstorms were revolving around the center of circulation.  Storms near the center of Yinxing generated upper level divergence that pumped mass away from the typhoon.

Winds to typhoon force extended out 35 miles in the eastern side of Typhoon Yinxing.  Winds to tropical storm force extended out 165 miles (265 km) from the center of Yinxing’s circulation.

Typhoon Yinxing will move through an environment favorable for intensification during the next 24 hours.  Yinxing will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southwestern part of an upper level ridge over the Western North Pacific Ocean.  The upper level ridge will produce southeasterly winds that will blow toward the top of Yinxing’s circulation.  Those winds will cause some vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Typhoon Yinxing will intensify during the next 24 hours.

Typhoon Yinxing will move around the southwestern part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Yinxing toward the northwest during the next 24 hours.  On its anticipated track, Typhoon Yinxing will move toward the northern Philippines.  Yinxing could approach northern Luzon in three days.

Tropical Storm Yinxing Forms East of the Philippines

Tropical Storm Yinxing formed east of the Philippines on Sunday.  At 4:00 p.m. EST on Sunday the center of Tropical Storm Yinxing was located at latitude 11.5°N and longitude 134.0°W which put the center about 955 miles (1540 km) east-southeast of Manila, Philippines.  Yinxing was moving toward the west at 15 m.p.h. (24 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. (105 km/h).  The minimum surface pressure was 997 mb.

A low pressure system over the Western North Pacific Ocean east of the Philippines strengthened on Sunday and the Japan Meteorological Agency designated the system as Tropical Storm Yinxing.  The circulation around Yinxing was organizing rapidly.  More thunderstorms were forming near the center of Tropical Storm Yinxing.  Bands of showers and thunderstorms were revolving around the center of Yinxing’s circulation.  Storms near the center of Yinxing generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

Tropical Storm Yinxing will move through an environment favorable for intensification during the next 24 hours.  Yinxing will move over water where the Sea Surface Temperatures are near 30°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Yinxing will intensify during the next 24 hours.  Yingxing is likely to strengthen to a typhoon on Monday.

Tropical Storm Yinxing will move around the southwestern part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Yinxing toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Yinxing will move toward the northern Philippines.

Tropical Storm Trami Moves Over South China Sea

Tropical Storm Trami moved over the South China Sea on Thursday.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Trami was located at latitude 17.0°N and longitude 118.3°E which put the center about 215 miles (350 km) northwest of Manila, Philippines.  Trami was moving toward the west at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 986 mb.

Tropical Storm Trami moved over the South China Sea on Thursday after dropping heavy rain on the Philippines that caused flash floods.  There were reports of damage and fatalities in Luzon.  The circulation around Trami began to strengthen when it moved over the South China Sea.  The inner end of a rainband wrapped around the center of Trami’s circulation.  Bands of thunderstorms were in the southern half of Tropical Storm Trami.  The bands in the northern side of Trami’s circulation consisted primarily of showers and lower clouds.  Storms near the center of Trami generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Trami was very large.  Winds to tropical storm force extended out 335 miles (535 km) from the center of Trami’s circulation.

Tropical Storm Trami will move through an environment favorable for intensification during the next 24 hours.  Trami will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southern part of an upper level ridge over the South China Sea.  The upper level ridge will produce easterly winds that will blow toward the top of Trami’s circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Trami is likely to intensify during the next 24 hours.  Trami could strengthen to a typhoon during the weekend.

Tropical Storm Trami will move around the south side of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Trami toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Trami will toward Vietnam.

Ewiniar Rapidly Intensifies to a Typhoon East of Luzon

Former Tropical Storm Ewiniar rapidly intensified to a typhoon east of Luzon on Sunday. At 11:00 a.m. EDT on Sunday the center of Typhoon Ewiniar was located at latitude 15.2°N and longitude 122.5°E which put it about 125 miles (200 km) east-northeast of Manila, Philippines. Ewiniar was moving toward the northeast at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 115 m.p.h. (185 km/h). The minimum surface pressure was 966 mb.

Former Tropical Storm Ewiniar rapidly intensified to a typhoon after it moved east of Luzon on Sunday. A very small eye with a diameter of 5 miles (8 km) formed at the center of Typhoon Ewiniar. The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms revolved around the center of Ewiniar’s circulation. Storms near the center generated upper level divergence that pumped mass away from the typhoon. The removal of mass caused the surface pressure to decrease rapidly.

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 60 miles (95 km) from the center of circulation.

Typhoon Ewiniar will move through an environment that will be very favorable for intensification during the next 24 hours. Ewiniar will move over water where the Sea Surface Temperatures are near 31°C. It will move under the western part of an upper level ridge over the Western North Pacific Ocean. The upper level ridge will produce southwesterly winds that will blow toward the top of Ewiniar’s circulation. The winds in the lower levels of the atmosphere will also blow from the southwest and there will be little vertical wind shear. Typhoon Ewiniar is likely to intensify during the next 24 hours. Ewiniar could continue to intensify rapidly. If the inner end of a rainband wraps around the existing eye and eyewall, then an eyewall replacement cycle could interrupt the intensification.

Typhoon Ewiniar will move around the western end of a high pressure system that is east of the Philippines. The high pressure system will steer Ewiniar toward the northeast during the next 24 hours. On its anticipated track, Typhoon Ewiniar will move farther away from Luzon during the next 24 hours. Ewiniar will pass southeast of the Ryukyu Islands during the early part of next week.

Typhoon Ewiniar will continue to produce strong winds and locally heavy rain in Luzon until it moves farther to the northeast. Heavy rain is likely to cause flash floods in some locations.

Tropical Storm Ewiniar Strengthens Near Manila

Tropical Storm Ewiniar strengthened near Manila on Saturday night. At 11:00 p.m. EDT on Saturday the center of Tropical Storm Ewiniar was located at latitude 14.3°N and longitude 121.4°E which put it about 50 miles (80 km) southeast of Manila, Philippines. Ewiniar was moving toward the northwest at 6 m.p.h. (10 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 990 mb.

Former Tropical Depression 01W strengthened over southern Luzon on Saturday night and the Japan Meteorological Agency designated the system as Tropical Storm Ewiniar. The circulation around Tropical Storm Ewiniar was very symmetrical. Thunderstorms were occurring near the center of Ewiniar’s circulation. Bands of showers and thunderstorms were revolving around the center of circulation. Storms near the center of Ewiniar generated upper level divergence that pumped mass away from the tropical storm. The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Ewiniar was relatively small. Winds to tropical storm force extended out 60 miles (95 km) from the center of Ewiniar’s circulation.

Tropical Storm Ewiniar will move through an environment that will be mostly favorable for intensification during the next 24 hours. Ewiniar will move over water where the Sea Surface Temperatures are near 31°C. It will move under the western part of an upper level ridge over the Western North Pacific Ocean. The upper level ridge will produce southerly winds that will blow toward the top of Ewiniar’s circulation. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Even though part of the circulation around Tropical Storm Ewiniar will pass over Luzon, Ewiniar is likely to intensify during the next 24 hours.

Tropical Storm Ewiniar will move around the western end of a high pressure system that is east of the Philippines. The high pressure system will steer Ewiniar toward the north during the next 24 hours. On its anticipated track, Tropical Storm Ewiniar will move along the east coast of Luzon during the next 24 hours. Ewiniar will start to move toward the northeast on Monday after is moves around the western end of the high pressure system.

Tropical Storm Ewiniar will continue to produce strong winds and locally heavy rain in Luzon during the next 24 hours. Heavy rain is likely to cause flash floods in some locations. Ewiniar could also produce a storm surge of up to 7 feet (2 meters) along the east coast of Luzon where the wind blows the water toward the shore.