Tag Archives: Krosa

Tropical Storm Bailu Forms South of Japan

Tropical Storm Bailu formed over the Western North Pacific Ocean south of Japan on Saturday.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Bailu was located at latitude 33.9°N and longitude 142.6°E which put the center about 185 miles (295 km) south of Tokyo, Japan.  Bailu was moving toward the north-northeast at 29 m.p.h. (46 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 strengthened on Saturday and the Japan Meteorological Agency designated the system as Tropical Storm Bailu.

The distribution of thunderstorms in Tropical Storm Bailu was asymmetrical.  Thunderstorms were occurring in bands in the northern part of Bailu’s circulation.  Thunderstorms were also occurring in bands in the southwestern part of Tropical Storm Bailu.  Bands in the other parts of Bailu’s circulation consisted primarily of showers and lower clouds.

The distribution of wind speeds in Tropical Storm Bailu was also asymmetrical.  Winds to tropical storm force extended out 175 miles (280 km) in the southern half of Bailu’s circulation.  The winds in the northern side of Tropical Storm Bailu were blowing at less than tropical storm force.

Tropical Storm Bailu will move through an environment marginally favorable for intensification during the next 24 hours.  Bailu will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the eastern side of an upper level trough that is north of Japan.  The upper level trough will produce southwesterly winds that will blow toward the top of Bailu’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification.  Tropical Storm Bailu could intensify during the next 24 hours, if the vertical wind shear does not increase.

The upper level trough north of Japan will steer Tropical Storm Bailu quickly toward the east-northeast during the next 24 hours.  On its anticipated track, Tropical Storm Bailu will move quickly away from Honshu on Sunday.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Krosa was moving rapidly away from Japan.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Krosa was located at latitude 40.2°N and longitude 152.2°E which put the center about 505 miles (820 km) east of Misawa, Japan.  Krosa was moving toward the east-northeast at 28 m.p.h. (45 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 977 mb.

Tropical Storm Krosa Passes East of Japan

Tropical Storm Krosa passed east of Japan on Friday.  At 11:00 p.m. EDT on Friday the center of Tropical Storm Krosa was located at latitude 36.8°N and longitude 143.4°E which put the center about 130 miles (210 km) east-northeast of Tokyo, Japan.  Krosa was moving toward the north-northeast at 16 m.p.h. (26 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 972 mb.

Tropical Storm Krosa passed east of Japan on Friday.  Even though Krosa was a tropical storm, there was a clear area at the center of its circulation.  The clear area was surrounded by a broken ring of thunderstorms.  The strongest winds were occurring in that broken ring of storms.  Thunderstorms were occurring in bands in the eastern side of Tropical Storm Krosa. Bands in the western side of Krosa’s circulation consisted primarily of showers and lower clouds.

The distribution of wind speeds in Tropical Storm Krosa was more symmetrical on Friday.  Winds to tropical storm force extended out 115 miles (185 km) from the center of Krosa’s circulation.

Tropical Storm Krosa will move through an environment unfavorable for the intensification of a tropical cyclone during the next 24 hours.  Krosa will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the eastern side of an upper level trough that is north of Japan.  The upper level trough will produce southwesterly winds that will cause moderate vertical wind shear.  Cooler Sea Surface Temperatures and moderate vertical wind shear will cause Tropical Storm Krosa to start a transition to an extratropical cyclone during the next 24 hours.

The upper level trough north of Japan will steer Tropical Storm Krosa toward the east-northeast during the next 24 hours.  On its anticipated track, Tropical Storm Krosa will move away from Japan.

Elsewhere over the Western North Pacific Ocean, Tropical Depression 13W formed south of Japan.  At 11:00 p.m. EDT on Friday the center of Tropical Depression 13W was located at latitude 28.1°N and longitude 137.5°E which put the center about 325 miles (520 km) west-northwest of Iwo To.  Tropical Depression 13W was moving toward the northeast at 7 m.p.h. (11 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 998 mb.

Tropical Storm Krosa Spins Southeast of Japan

Tropical Storm Krosa was still spinning over the Western North Pacific Ocean southeast of Japan on Thursday afternoon.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Krosa was located at latitude 32.0°N and longitude 141.9°E which put the center about 290 miles (465 km) south-southeast of Tokyo, Japan.  Krosa was moving toward the north-northwest at 9 m.p.h. (15 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 980 mb.

The structure of Tropical Storm Krosa started to change on Thursday as it continued to spin over the Western North Pacific Ocean southeast of Japan.  The inner end of a rainband wrapped around the eastern and northern sides of the center of Krosa’s circulation.  A large circular eye appeared to be forming at the center of Krosa, even through Krosa was just a tropical storm.  Bands of showers and thunderstorms were revolving around the center of Tropical Storm Krosa.

The circulation around Tropical Storm Krosa was relatively small for a tropical storm southeast of Japan.  Winds to tropical storm force extended out 110 miles (175 km) from the center of Krosa’s circulation.

Tropical Storm Krosa will move through an environment somewhat favorable for intensification during the next 24 hours.  Krosa will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the middle of an upper level low that is southeast of Japan.  The upper level winds are weak near the center of the upper level low and there will be little vertical wind shear.  However, the upper level low will inhibit upper level divergence.  In addition, Krosa’s circulation is surrounded by drier air.  Tropical Storm Krosa could intensify during the next 24 hours in spite of the effects of the upper level low and the drier air.

Tropical Storm Krosa will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Krosa toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Krosa could pass to the east of Tokyo on Friday.

Tropical Storm Co-may Moves Inland Near Shanghai

Tropical Storm Co-may moved inland over eastern China near Shanghai on Wednesday.  At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Co-may was located at latitude 31.4°N and longitude 121.1°E which put the center about 5 miles (10 km) west of Shanghai, China.  Co-may was moving toward the northwest at 7 m.p.h. (11 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.

The center of Tropical Storm Co-may made landfall on the coast of eastern China near Shanghai on Wednesday.  Co-may was weakening as it made landfall.  Winds to tropical storm force extended out 115 miles (185 km) from the center of Co-may’s circulation.

Tropical Storm Co-may will move around the southwestern part of a high pressure system over northeastern China.  The high pressure system will steer Co-may toward the west-northwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Co-may will move inland west of Shanghai during the next 24 hours.

Tropical Storm Co-may will bring gusty winds and rain to the region around Shanghai.  Locally heavy rain could cause floods in Zhejiang and Jiangsu.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Krosa was stalled southeast of Japan.  At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Krosa was located at latitude 29.2°N and longitude 143.2°E which put the center about 475 miles (765 km) south-southeast of Tokyo, Japan.  Krosa was moving toward the northwest at 2 m.p.h. (3 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 985 mb.

Tropical Storm Co-may Nears Eastern China

Tropical Storm Co-may neared the coast of eastern China on Tuesday.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Co-may was located at latitude 28.9°N and longitude 123.1°E which put the center about 215 miles (345 km) south-southeast of Shanghai, China.  Co-may was moving toward the 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 982 mb.

After meandering around Okinawa for several days Tropical Storm Co-may started to move toward the coast of eastern China south of Shanghai on Tuesday.  The distribution of thunderstorms in Tropical Storm Co-may was asymmetrical.  Thunderstorms were occurring in bands in the northern and western parts of Co-may’s circulation.  Bands in the eastern and southern parts of Tropical Storm Co-may consisted primarily of showers and lower clouds.

The distribution of wind speeds in Tropical Storm Co-may was also asymmetrical.  Winds to tropical storm force extended out 175 miles (280 km) in the northern side of Co-may’s circulation.  The winds in the southern half of Tropical Storm Co-may were blowing at less than tropical storm force.

Tropical Storm Co-may will move through an environment somewhat favorable for intensification during then ext 12 hours.  Co-may will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the eastern side of an upper level trough that is over eastern Asia.  The upper level trough will produce southwesterly winds that will blow toward the top of Co-may’s circulation.  Those winds will cause some vertical wind shear.  The vertical wind shear will inhibit intensification but the wind shear may not be enough to prevent intensification.  Tropical Storm Co-may could intensify during the next 12 hours.

Tropical Storm Co-may will move around the western end of a high pressure system over Japan.  The high pressure system will steer Co-may toward the northwest during the next 24 hours.  On its anticipated track, the center of Tropical Storm Co-may will be near Shanghai in less than 24 hours.

Tropical Storm Co-may will bring wind and rain to the region around Shanghai.  Heavy rain could cause floods in Zhejiang and Jiangsu.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Krosa was meandering south of Japan.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Krosa was located at latitude 28.6°N and longitude 142.9°E which put the center about 500 miles (805 km) south-southeast of Tokyo, Japan.  Krosa was moving toward the north at 2 m.p.h. (3 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 980 mb.

Krosa Strengthens to a Typhoon

Former Tropical Storm Krosa strengthened to a typhoon over the Western North Pacific Ocean north of the Marianas on Sunday.  At 11:00 a.m. EDT on Sunday the center of Typhoon Krosa was located at latitude 23.3°N and longitude 145.4°E which put the center about 270 miles (435 km) north of Agrihan.  Krosa was moving toward the north-northeast at 15 m.p.h. (24 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 971 mb.

Former Tropical Storm Krosa strengthened to a typhoon north of the Marianas on Sunday.  The inner end of a rainband wrapped around the northern and western sides of the center of Typhoon Krosa.  Other bands of showers and thunderstorms were revolving around the center of Krosa’s circulation.  Storms near the center of Krosa generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

The circulation around Typhoon Krosa became more symmetrical on Sunday.  Winds to typhoon force extended out 45 miles (75 km) from the center of Krosa’s circulation.  Winds to tropical storm force extended out 195 miles (315 km) from the center of Typhoon Krosa.

Tropical Storm Krosa will move through and environment somewhat favorable for intensification during the next 24 hours.  Krosa will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the eastern side of an upper level low centered southeast of Japan.  The upper level low will produce southerly winds that will blow toward the top of Krosa’s circulation.  Those winds will cause some vertical wind shear. The vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification. Typhoon Krosa could intensify during the next 24 hours.

Typhoon Krosa will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Krosa toward the north during the next 24 hours. On its anticipated track, the center of Typhoon Krosa will pass east of Iwo To.

Elsewhere over the Western North Pacific Ocean, former Tropical Storm Co-may strengthened back to a tropical storm near Okinawa.  At 11:00 a.m. EDT on Sunday the center of Tropical Storm Co-may was located at latitude 26.8°N and longitude 127.6°E which put the center about 15 miles (25 km) northeast of Okinawa.  Co-may was moving toward the west at 16 m.p.h. (26 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 986 mb.

Tropical Storm Krosa Spins Northwest of the Marianas

Tropical Storm Krosa was spinning northwest of the Marianas on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Krosa was located at latitude 19.8°N and longitude 144.8°E which put the center about 90 miles (145 km) northwest of Agrihan.  Krosa was moving toward the north at 9 m.p.h. (15 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 987 mb.

Tropical Storm Krosa strengthened on Saturday as it moved northwest of the Marianas.  More thunderstorms formed near the center of Krosa’s circulation.  Bands of showers and thunderstorms were revolving around the center of Tropical Storm Krosa.  Storms near the center of Krosa generated upper level divergence that pumped mass away to the east of the tropical storm.  The removal of mass caused the surface pressure to decrease.

The distribution of wind speeds in Tropical Storm Krosa was asymmetrical.  Tropical storm force winds extended out 260 miles (420 km) in the southern side of Krosa’s circulation.  Tropical Storm force winds extended out 110 miles (175 km) in the northern side of Krosa.

Tropical Storm Krosa will move through and environment mostly favorable for intensification during the next 24 hours.  Krosa will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the eastern side of an upper level low centered south of Japan.  The upper level low will produce southerly winds that will blow toward the top of Krosa’s circulation.  Those winds will cause some vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Storm Krosa will intensify during the next 24 hours.  Krosa could strengthen to a typhoon on Sunday.

Tropical Storm Krosa will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Krosa toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Krosa will pass east of Iwo To.

Tropical Storm Co-may Drops Heavy Rain on Taiwan

Tropical Storm Co-may dropped heavy rain on Taiwan on Friday.  At 11:00 a.m. EDT on Friday the center of Tropical Storm Co-may was located at latitude 22.8°N and longitude 123.9°E which put the center about 200 miles (320 km) southeast of Taipei, Taiwan.  Co-may was moving toward the northeast at 41 m.p.h. (67 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 997 mb.

Even though the center of Tropical Storm Co-may was passing east of Taiwan, bands in the western side of Co-may’s circulation were dropping heavy rain on parts of southern Taiwan.

Heavy Rain Advisories were in effect for parts of southern Taiwan.

Strong vertical wind shear was causing Tropical Storm Co-may to weaken as it passed east of Taiwan on Friday.  An upper level low centered over eastern China was producing strong southwesterly winds that were blowing toward the top of Co-may’s circulation.  Those winds were causing strong vertical wind shear.  The strong vertical wind shear was causing Tropical Storm Co-may to weaken.

The distribution of wind speeds in Tropical Storm Co-may became asymmetrical when Co-may weakened.  Winds to tropical storm force extended out 115 miles (185 km) in the southeastern quadrant of Co-may’s circulation.  The winds in the other parts of Tropical Storm Co-may were blowing at less than tropical storm force.

Tropical Storm Co-may will move through an environment that will be unfavorable for intensification during the next 24 hours.  Co-may will move over water where the Sea Surface Temperatures are near 29°C.  However, it will move under the eastern side of the upper level low that is centered over eastern China.  The upper level low will continue to produce strong southwesterly winds that will blow toward the top of Co-may’s circulation.  Those winds will cause strong vertical wind shear.  The strong vertical wind shear will cause Tropical Storm Co-may to weaken to a tropical depression during the next 24 hours.

The upper low over eastern China will steer Tropical Storm Co-may quickly toward the northeast during the next 24 hours.  On its anticipated track, Tropical Storm Co-may will move across the southern Ryukyu Islands.

Tropical Storm Co-may will bring gusty winds and locally heavy rain to the southern Ryukyu Islands.

Elsewhere over the Western North Pacific Ocean, former Tropical Storm Francisco weakened to a tropical depression north of Taiwan and Tropical Storm Krosa strengthened gradually west of the Marianas.

At 11:00 a.m. EDT on Friday the center of Tropical Depression Francisco was located at latitude 26.2°N and longitude 121.4°E which put the center about 75 miles (120 km) north of Taipei, Taiwan.  Francisco was moving toward the west-southwest at 11 m.p.h. (17 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 993 mb.

At 11:00 a.m. EDT on Friday the center of Tropical Storm Krosa was located at latitude 18.0°N and longitude 143.8°E which put the center about 225 miles (365 km) northwest of Saipan.  Krosa was moving toward the northeast at 7 m.p.h. (11 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 Co-may Brings Wind and Rain to Northern Luzon

Tropical Storm Co-may brought wind and rain to northern Luzon on Thursday.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Co-may was located at latitude 17.5°N and longitude 120.6°E which put the center about 10 miles (15 km) east of Vigan, Philippines.  Co-may was moving toward the northeast at 12 m.p.h. (19 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 980 mb.

The center of former Typhoon Co-may made landfall on the coast of northwestern Luzon west of Baguio on Thursday.  Co-may weakened back to a tropical storm after the center of circulation moved inland over Luzon.

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

Tropical Storm Co-may will continue to produce strong winds and locally heavy rain in northern Luzon during the next few hours.  Heavy rain could cause flash floods and mudslides.  Co-may is likely to cause widespread outages of electricity in northern Luzon.  Tropical Storm Co-may could also cause a storm surge of up to 7 feet (2 meters) along the coast of northwestern Luzon.

Tropical Storm Co-may will get pulled toward the northeast by the much larger circulation around Tropical Storm Francisco.  On its anticipated track, Tropical Co-may will move north of Luzon in a few hours.  Tropical Storm Co-may will pass east of Taiwan on Friday.

Tropical Storm Co-may will continue to weaken as it moves across northern Luzon.  Co-may will move through an environment that will be unfavorable for intensification after it moves north of Luzon.  Co-may will move over water where the Sea Surface Temperatures are near 29°C.  However, it will move under the southeastern side of an upper level low that is centered over the east coast of China.  The upper level low will produce southwesterly winds that will blow toward the top of Co-may’s circulation. Those winds will cause strong vertical wind shear.  The strong vertical wind shear will cause Tropical Storm Co-may to continue to weaken when it moves north of Luzon.

Elsewhere over the Western North Pacific Ocean, the center of Tropical Storm Francisco moved west of Okinawa and Tropical Storm Krosa formed west of the Marianas.

At 5:00 p.m. EDT on Thursday the center of Tropical Storm Francisco was located at latitude 27.0°N and longitude 124.3°E which put the center about 180 miles (290 km) west of Okinawa.  Francisco was moving toward the west-northwest at 23 m.p.h. (37 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 991 mb.

At 5:00 p.m. EDT on Thursday the center of Tropical Storm Krosa was located at latitude 16.5°N and longitude 143.3°E which put the center about 170 miles (280 km) west-northwest of Tinian. Krosa was moving toward the north at 6 m.p.h. (10 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.

Tropical Storm Krosa Brings Wind and Rain to Southwest Japan

Large Tropical Storm Krosa brought wind and rain to parts of southwestern Japan on Wednesday night.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Krosa was located at latitude 33.2°N and longitude 132.9°E which put it about 20 miles (30 km) south-southwest of Uwajima, Japan.  Krosa was moving toward the north at 13 m.p.h. (20 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 975 mb.

The center of large Tropical Storm Krosa was near the southwestern coast of Shikoku on Wednesday night.  The strongest winds were blowing in rainbands that were east of the center of circulation.  Winds to tropical storm force extended out about 260 miles (420 km) from the center of circulation.  The wind was weaker in the western half of Krosa.

Heavy rain was falling on the south facing slopes of Shikoku where the wind was blowing up the slopes.  Heavy rain was also falling on south facing slopes in Wakayama, Mie, Nara and Shiga prefectures in Honshu.  Prolonged heavy rainfall could cause flash floods in some locations.

Tropical Storm Krosa is forecast to move north-northeast across Shikoku and southwestern Honshu.  Krosa will weaken when it moves over land, but it will continue to drop heavy rain over parts of southwestern Japan on Thursday.  A weaker Tropical Storm Krosa is forecast to move over the Sea of Japan later on Thursday.