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Nokaen Strengthens Back to a Tropical Storm

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Former Tropical Depression Nokaen strengthened back to a tropical storm over the Western North Pacific Ocean on Monday night.  At 10:00 a.m. EST on Tuesday the center of the Tropical Storm Nokaen was located at latitude 17.4°N and longitude 132.3°E which put the center about 700 miles (1130 km) northwest of Yap.  Nokaen was moving toward the east at 17 m.p.h. (28 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 1000 mb.

After weakening to a tropical depression on Sunday, Nokaen strengthened back to a tropical storm on Monday night.  Thunderstorms developed in several bands in the eastern side of Tropical Storm Nokaen.  Bands in the western side of Nokaen’s circulation still consisted primarily of showers and lower clouds.  The thunderstorms in the eastern side of Nokaen started to generate some upper level divergence that pumped mass away to the east of the tropical storm.

The strongest winds were occurring in the western side of Tropical Storm Nokaen.  Winds to tropical storm force extended out 115 miles (185 km) in the western half of Nokaen’s circulation.  The winds in the the eastern side of Tropical Storm Nokaen were blowing at less than tropical storm force.

Tropical Storm Nokaen will move through an environment that will be unfavorable for intensification during the next 24 hours.  Nokaen will move over water where the Sea Surface Temperatures are near 28°C.  However, it will continue to be surrounded by drier air.  In addition, Tropical Storm Nokaen will move under the southern portion of the midlatitude upper level westerly winds.  Those winds will cause vertical wind shear.  The drier air and the vertical wind shear will prevent Tropical Storm Nokaen from intensifying.

Tropical Storm Nokaen will move around the northwestern part of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Nokaen toward the east during the next 24 hours.  On its anticipated track, Tropical Storm Nokaen will remain northwest of Yap.

Nokaen Weakens to a Tropical Depression

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Former Tropical Storm Nokaen weakened to a tropical depression over the Western North Pacific Ocean east of Luzon on Monday morning.  At 10:00 a.m. EST on Monday the center of the Tropical Depression Nokaen was located at latitude 17.1°N and longitude 127.4°E which put the center about 365 miles (530 km) east-southeast of Aparri, Philippines.  Nokaen was moving toward the northeast at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1000 mb.

Former Tropical Storm Nokaen continued to move through an environment containing drier air on Monday.  The drier air caused most of the thunderstorms in Tropical Depression Nokaen to dissipate.  A few thunderstorms were still occurring in a band in the far northern periphery of Nokaen’s circulation.  The bands in the other parts of Tropical Depression Nokaen consisted primarily of showers and lower clouds.

Tropical Depression Nokaen will move through an environment that will be unfavorable for intensification during the next 24 hours.  Nokaen will move over water where the Sea Surface Temperatures are near 28°C.  However, it will continue to be surrounded by drier air.  In addition, Tropical Depression Nokaen will move under the southern portion of the midlatitude upper level westerly winds.  Those winds will cause vertical wind shear.  The drier air and the vertical wind shear will cause the circulation around Tropical Depression Nokaen to continue to weaken.

Tropical Depression Nokaen will move around the western end of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Nokaen toward the east-northeast during the next 24 hours.  On its anticipated track, Tropical Depression Nokaen will continue to move farther away from Luzon as it gradually spins down.

Tropical Storm Nokaen Passes East of Luzon

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Tropical Storm Nokaen was passing just to the east of Luzon on Saturday morning.  At 10:00 a.m. EST on Saturday the center of the Tropical Storm Nokaen was located at latitude 15.2°N and longitude 124.1°E which put the center about 185 miles (300 km) east-southeast of Casiguran, Philippines.  Nokaen was moving toward the northwest at 13 m.p.h. (21 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 993 mb.

Tropical Storm Nokaen strengthened a little more as it moved east of Luzon on Saturday morning.  Even though Nokaen was stronger, the distribution of thunderstorms remained asymmetrical.  Thunderstorms were occurring in bands in the western and northern parts of Tropical Storm Nokaen.  Bands in the eastern and southern parts of Nokaen’s circulation consisted primarily of showers and lower clouds.  Storms near the center of Nokaen 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 Nokaen was interacting with a high pressure system over eastern Asia.  The interaction was causing a large area of strong winds in the northwestern quadrant of Nokaen’s circulation.  Winds to tropical storm force extended out 150 miles (240 km) in the northwestern quadrant of Tropical Storm Nokaen.  Winds to tropical storm force only extended out 60 miles (95 km) in the other quadrants of Nokaen’s circulation.

Tropical Storm Nokaen will move through an environment that will become unfavorable for intensification during the next 24 hours.  Nokaen will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western end of an upper level ridge that is over the Western North Pacific Ocean.  The upper level ridge will produce southeasterly winds that will blow toward the top of Nokaen’s circulation.  Those winds will cause the vertical wind shear to increase.  Tropical Storm Nokaen will start to weaken when the vertical wind shear increases.

Tropical Storm Nokaen will move around the western end of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Nokaen toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Nokaen will remain east of Luzon.

Bands in the western side of Tropical Storm Nokaen will bring gusty winds and locally heavy rain to parts of Luzon.  Heavy rain could cause flash floods in some locations.

Tropical Cyclone Nokaen Nears the Philippines

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Tropical Storm Nokaen moved nearer to the Philippines on Friday morning.  At 10:00 a.m. EST on Friday the center of the Tropical Storm Nokaen was located at latitude 12.4°N and longitude 126.7°E which put the center about 115 miles (185 km) east of Laoang, Philippines.  Nokaen was moving toward the west-northwest 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.

Tropical Storm Nokaen strengthened on Friday morning as it moved closer to the Philippines.  More thunderstorms formed near the center of Nokaen’s circulation.  More thunderstorms also developed in bands in the western side of Tropical Storm Nokaen.  Bands in the eastern side of Nokaen’s circulation still consisted primarily of showers and lower clouds.  Storms near the center of Nokaen generated more upper level divergence that pumped mass away from the tropical storm.  The removal of more mass caused the surface pressure to decrease.

The strongest winds were occurring in the northwestern part of Tropical Storm Nokaen.  Winds to tropical storm force extended out 150 miles (240 km) in the northwestern quadrant of Nokaen’s circulation.  The winds in the other parts of Tropical Storm Nokaen were blowing at less than tropical storm force.

Tropical Storm Nokaen will move through an environment somewhat favorable for intensification during the next 24 hours.  Nokaen will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western end of an upper level ridge that is over the Western North Pacific Ocean.  The upper level ridge will produce southeasterly winds that will blow toward the top of Nokaen’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Nokaen could continue to intensify during the next 24 hours.

Tropical Storm Nokaen will move around the western end of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Nokaen toward the northwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Nokaen will be near Samar on in 24 hours.

Bands in the western side of Nokaen’s circulation are already bringing gusty winds and locally heavy rain to Samar, Catanduanes Island, and southeastern Luzon.  Heavy rain is likely to cause flash floods in some locations.

Tropical Storm Nokaen Develops East of the Philippines

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Tropical Storm Nokaen developed over the Western North Pacific Ocean east of the Philippines on Thursday morning.  At 10:00 a.m. EST on Thursday the center of the Tropical Storm Nokaen was located at latitude 10.2°N and longitude 128.8°E which put the center about 220 miles (335 km) east of Dinagat, Philippines.  Nokaen was moving toward the northwest at 2 m.p.h. (3 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.

A low pressure system over the Western North Pacific Ocean east of the Philippines strengthened on Thursday morning and the Japan Meteorological Agency designated the system as Tropical Storm Nokaen.

Thunderstorms were occurring near the center of Tropical Storm Nokaen.  Thunderstorms were also occurring in bands in the western and northern parts of Nokaen’s circulation.  Bands in the eastern and southern parts of Tropical Storm Nokaen consisted primarily of showers and thunderstorms.  Storms near the center of Nokaen generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The distribution of winds speeds in Tropical Storm Nokaen was asymmetrical.  Winds to tropical storm force extended out 150 miles (240 km) in the northern half of Nokaen’s circulation.  Winds to tropical storm force extended out 45 miles (75 km) in the southern half of Tropical Storm Nokaen.

Tropical Storm Nokaen will move through an environment somewhat favorable for intensification during the next 24 hours.  Nokaen will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western end of an upper level ridge that is over the Western North Pacific Ocean.  The upper level ridge will produce southeasterly winds that will blow toward the top of Nokaen’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Nokaen could intensify slowly during the next 24 hours.

Tropical Storm Nokaen will move around the western end of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Nokaen toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Nokaen will move closer to the central Philippines.

Bands in the western side of Nokaen’s circulation will bring gusty winds and locally heavy rain to Samar, Cataduanes Island, and southeastern Luzon.  Heavy rain could cause flash floods in some locations.

Tropical Storm Sepat Moves Toward Honshu

Tropical Storm Sepat moved toward Honshu on Monday.  At 11:00 p.m. EDT on Monday the center of Tropical Storm Sepat was located at latitude 29.7°N and longitude 140.7°E which put the center about 420 miles (680 km) south of Tokyo, Japan.  Sepat was moving toward the northwest at 14 m.p.h. (22 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 1003 mb.

Tropical Storm Sepat strengthened a little on Monday morning, but Sepat was showing signs of weakening on Monday evening.  Thunderstorms were still occurring near the center of Tropical Storm Sepat.  Thunderstorms were also occurring bands revolving around the center of Sepat’s circulation.  Storms near the center of Sepat generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass in the upper levels was balanced by the inflow of mass in the lower levels of Tropical Storm Sepat.  The balance of upper level divergence and inflow in the lower levels caused the surface pressure to remain steady.

The distribution of wind speeds in Tropical Storm Sepat was asymmetrical.  Winds to tropical storm force extended out 110 miles (175 km) in the eastern side of Sepat’s circulation.  The winds in the western side of Tropical Storm Sepat were blowing at less than tropical storm force.

Tropical Storm Sepat will move through an environment that will become unfavorable for intensification during the next 24 hours.  Sepat will move over water where where the Sea Surface Temperatures are near 26°C.  It will move under the northern part of an upper level low south of Japan.  The upper level low will produce northeasterly winds that will blow toward the top of Sepat’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear  and marginal Sea Surface Temperatures will cause Tropical Storm Sepat to weaken during the next 24 hours.  Sepat is likely to weaken to a tropical depression on Tuesday.

Tropical Storm Sepat will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Sepat toward the north-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Sepat will continue to move toward Honshu.

Tropical Storm Wutip Makes Landfall in Southern China

Tropical Storm Wutip made landfall on the coast of southern China near Lianjiang on Friday night.  At 5:00 a.m. EDT on Saturday the center of Tropical Storm Wutip was located at latitude 21.7°N and longitude 110.3°E which put the center about 15 miles (25 km) southwest of Lianjiang, China.  Wutip was moving toward the northeast at 13 m.p.h. (21 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 985 mb.

Tropical Storm Wutip strengthened to a typhoon just before it made landfall in southern China on Friday night.  Wutip weakened back to a tropical storm after it made landfall.  The circulation around Tropical Storm Wutip was small.  Winds to tropical storm force extended out 100 miles (160 km) from the center of Wutip’s circulation.

Tropical Storm Wutip will move around the northwestern part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Wutip toward the northeast during the next 24 hours.  On its anticipated track, Tropical Storm Wutip will move across Guangdong.  Wutip will pass north of Hong Kong.

Tropical Storm Wutip will bring strong winds and heavy rain to southern China.  The strongest winds and heaviest rain will occur in Guangdong . Heavy rain could cause flash floods in some locations.

Tropical Storm Wutip will weaken gradually as it moves across southern China.

Wutip Strengthens to a Typhoon Near Southern China

Former Tropical Storm Wutip strengthened to a typhoon near southern China on Friday evening.  At 11:00 p.m. EDT on Friday the center of Typhoon Wutip was located at latitude 20.8°N and longitude 109.4°E which put the center about 80 miles (130 km) southwest of Lianjiang, China.  Wutip was moving toward the north-northeast at 7 m.p.h. (11 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 979 mb.

Former Tropical Storm Wutip strengthened to a typhoon as it neared the coast of southern China on Friday evening.  The inner end of a rainband wrapped around the center of Wutip’s circulation.  A small circular eye with a diameter of 15 miles (24 km) formed at the center of Typhoon Wutip.  The eye was surrounded by a thin 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 Wutip’s circulation.  Storms near the center of Wutip generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

The size of the circulation around Typhoon Wutip decreased a little on Friday.  Winds to typhoon force extended out 25 miles (40 km) from the center of Wutip’s circulation.  Winds to tropical storm force extended out 100 miles (160 km) from the center of Typhoon Wutip.

Typhoon Wutip will move through an environment favorable for intensification during the next few hours before it makes landfall in China.  Wutip will move over water where where the Sea Surface Temperatures are near 30°C.  It will move under the axis of an upper level ridge over eastern China.  The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear.  However, much of the southeastern part of Wutip’s circulation will pass over Hainan.  The increased friction over land will slow the winds in that part of Tropical Storm Wutip.  Typhoon Wutip could intensify a little more during the next few hours.

Tropical Storm Wutip will move around the western part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Wutip toward the northeast during the next 24 hours.  On its anticipated track, the center Typhoon Wutip will make landfall on the coast of southern China southwest of Lianjiang.

Typhoon Wutip will bring strong winds and heavy rain to southern China on Saturday.  The strongest winds and heaviest rain will occur in Guangdong and eastern Guangxi.  Heavy rain could cause flash floods in some locations.

Tropical Storm Wutip Brings Wind and Rain to Hainan

Tropical Storm Wutip brought wind and rain to Hainan on Thursday night.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Wutip was located at latitude 18.6°N and longitude 108.5°E which put the center about 40 miles (65 km) south-southwest of Dongfang, China.  Wutip was moving toward the northwest at 9 m.p.h. (15 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. (105 km/h).  The minimum surface pressure was 983 mb.

Tropical Storm Wutip brought wind and rain to Hainan on Thursday night.  The center of Wutip’s circulation was passing just to the west of Hainan.  Bands in the eastern side of Tropical Storm Wutip were bringing strong winds and locally heavy rain to parts of Hainan.

Tropical Storm Wutip intensified on Thursday.  The inner end of a rainband wrapped around the center of Wutip’s circulation.  A small circular eye appeared to be forming at the center of Tropical Storm Wutip.  Bands of showers and thunderstorms were revolving around the center of Wutip’s circulation.  Storms near the center of Wutip 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 Wutip became more symmetrical on Thursday.  Winds to tropical storm force extended out 105 miles (165 km) from the center of Wutip’s circulation.

Tropical Storm Wutip will move through an environment that will be generally favorable for intensification during the next 24 hours.  Wutip will move over water where where the Sea Surface Temperatures are near 30°C.  It will move under the axis of an upper level ridge over eastern China.  The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear.  However, much of the eastern side of Wutip’s circulation will pass over Hainan.  The increased friction over land will slow the winds in that part of Tropical Storm Wutip.  Tropical Storm Wutip could intensify to a typhoon during the next 24 hours if the center of Wutip remains over water..

Tropical Storm Wutip will move around the western part of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Wutip toward the north during the next 24 hours.  On its anticipated track, the center Tropical Storm Wutip will pass just to the west of Hainan.  Wutip will approach the coast of Guangxi in 24 hours.

Tropical Storm Wutip will continue to bring strong winds and heavy rain to Hainan on Friday.  Heavy rain could cause flash floods in some locations.  Wutip will also bring strong winds and heavy rain to Guangxi during the weekend.

Tropical Storm Wutip Forms Over South China Sea

Tropical Storm Wutip formed over the South China Sea south of Hainan on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Wutip was located at latitude 16.5°N and longitude 110.6°E which put the center about 150 miles (240 km) south of Lingshui, China.  Wutip was moving toward the west 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 993 mb.

A low pressure system over the South China Sea strengthened on Wednesday and the Japan Meteorological Agency designated the system as Tropical Storm Wutip.  The distribution of thunderstorms in Tropical Storm Wutip was asymmetrical.  Thunderstorms were occurring in bands in the southern half of Wutip’s circulation.  Bands in the northern side of Tropical Storm Wutip consisted primarily of showers and lower clouds.  The storms in the southern half of Wutip began to generated upper level divergence that pumped mass away to the west of the tropical storm.

There was a large circulation around Tropical Storm Wutip, but the distribution of wind speeds was asymmetrical.  Winds to tropical storm force extended out 110 miles (170 km) in the southern half of Wutip’s circulation.  The winds in the northern half of Tropical Storm Wutip were blowing at less than tropical storm force.

Tropical Storm Wutip will move through an environment somewhat favorable for intensification during the next 24 hours.  Wutip will move over water where where the Sea Surface Temperatures are near 30°C.  It will move under the southern side of an upper level ridge over eastern China.  The upper level ridge will produce northeasterly winds that will blow toward the top of Wutip’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification but the shear will probably not be enough to prevent intensification.  Tropical Storm Wutip is likely to intensify gradually during the next 24 hours.

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

Tropical Storm Wutip will bring gusty winds and heavy rain to Hainan.  Heavy rain could cause flash floods in some locations.