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Tropical Cyclone Ditwah Weakens

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Tropical Cyclone Ditwah was weakening on Sunday as it moved slowly over the southwestern Bay of Bengal east of southern India.  At 10:00 a.m. EST on Sunday the center of Tropical Cyclone Ditwah was located at latitude 11.8°N and longitude 80.6°E which put the center about 55 miles (90 km) east-southeast of Puducherry, India.  Ditwah was moving toward the north at 2 m.p.h. (3 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 1004 mb.

Tropical Cyclone Ditwah was weakening slowly on Sunday.  A few new thunderstorms developed near the center of Ditwah’s circulation.  However, most of the bands revolving around the center of Tropical Cyclone Ditwah consisted of showers and lower clouds.  Thunderstorms were occurring in a couple of bands in the northeastern periphery of Ditwah’s circulation.

Tropical Cyclone Ditwah will move through an environment mostly unfavorable for intensification during the next 24 hours.  Ditwah will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge that is over Southeast Asia and the Bay of Bengal.  The upper level ridge will produce southeasterly winds that will blow toward the top of Ditwah’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification.  In addition, drier air being pulled into Ditwah’s circulation is likely to limit the formation of new thunderstorms.  Tropical Cyclone Ditwah is likely to continue to weaken slowly during the next 24 hours because of the moderate vertical wind shear and the effects of the drier air.

Tropical Cyclone Ditwah will move around the southwestern part of a high pressure system over the Bay of Bengal.  The high pressure system will steer Ditwah slowly toward the north during the next 24 hours.  On its anticipated track, Tropical Cyclone Ditwah will move nearly parallel to the coast of southeast India.

Tropical Cyclone Ditwah will bring gusty winds and isolated heavy rain to parts of Tamil Nadu and Puducherry.

Tropical Cyclone Ditwah Moves North of Sri Lanka

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Tropical Cyclone Ditwah moved north of Sri Lanka on Saturday.  At 10:00 a.m. EST on Saturday the center of Tropical Cyclone Ditwah was located at latitude 10.2°N and longitude 80.8°E which put the center about 150 miles (240 km) southeast of Puducherry, India.  Ditwah was moving toward the north at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 40 m.p.h. (50 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1004 mb.

The circulation around Tropical Cyclone Ditwah was pulling in drier air from over India.  The drier air caused the thunderstorms near the center of Ditwah’s circulation to weaken.  Thunderstorms were still occurring in bands in the northern and eastern periphery of Tropical Cyclone Ditwah.  Bands in the other parts of Ditwah’s circulation consisted primarily of showers and lower clouds.

Even though the thunderstorms near the center of Tropical Cyclone Ditwah weakened, Ditwah was still producing winds to tropical storm force.  Winds to tropical storm force extended out 140 miles (225 km) from the center of Ditwah’s circulation.

Tropical Cyclone Ditwah will move through an environment marginally favorable for intensification during the next 24 hours.  Ditwah will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge that is over Southeast Asia and the Bay of Bengal.  The upper level ridge will produce southeasterly winds that will blow toward the top of Ditwah’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification but the shear may not be enough to prevent some intensification.  However, the drier air being pulled into Ditwah’s circulation is likely to inhibit the formation of new thunderstorms.  Tropical Cyclone Ditwah could maintain its intensity during the next 24 hours.  However, the drier air is likely to cause Ditwah to weaken slowly during the next several days.

Tropical Cyclone Ditwah will move around the southwestern part of a high pressure system over the Bay of Bengal.  The high pressure system will steer Ditwah toward the north during the next 24 hours.  On its anticipated track, Tropical Cyclone Ditwah will move nearly parallel to the coast of southeast India.

Tropical Cyclone Ditwah will bring gusty winds and isolated heavy rain to parts of Tamil Nadu and Puducherry.

Tropical Cyclone Ditwah Spins Near Sri Lanka

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Tropical Cyclone Ditwah continued to spin near Sri Lanka on Friday.  At 10:00 a.m. EST on Friday the center of Tropical Cyclone Ditwah was located at latitude 8.8°N and longitude 80.8°E which put the center about 85 miles (135 km) south-southeast of Jaffna, Sri Lanka.  Ditwah was moving toward the north-northwest at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 40 m.p.h. (50 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1004 mb.

The center of Tropical Cyclone Ditwah was still over northern Sri Lanka on Friday morning.  The fact that the center of Ditwah’s circulation was still over land combined with the effects of vertical wind shear to cause the distribution of thunderstorms to be asymmetrical.  Thunderstorms were occurring in bands in the northern and western parts of Tropical Cyclone Ditwah.  Bands in the southern and eastern parts of Ditwah’s circulation consisted primarily of showers and lower clouds.

The strongest winds in Tropical Cyclone Ditwah were occurring over the southwestern Bay of Bengal.   Winds to tropical storm force extended out 110 miles (175 km) from the center of Ditwah’s circulation.  The winds were much weaker over land.

Tropical Cyclone Ditwah will move through an environment somewhat favorable for intensification when the center of its circulation moves back over the southwestern Bay of Bengal in a few hours.  Ditwah will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge that is over Southeast Asia and the Bay of Bengal.  The upper level ridge will produce southeasterly winds that will blow toward the top of Ditwah’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification but the shear may not be enough to prevent some intensification.  Tropical Cyclone Ditwah could intensify a little during the next 24 hours even with moderate vertical wind shear, when the center of its circulation moves back over water.

Tropical Cyclone Ditwah will move around the southwestern part of a high pressure system over the Bay of Bengal.  The high pressure system will steer Ditwah toward the north-northwest during the next 24 hours.  On its anticipated track, the center of Tropical Cyclone Ditwah will move north of Sri Lanka in a few hours.  Ditwah could reach the coast of Tamil Nadu during the weekend.

Tropical Cyclone Ditwah will continue to affect Sri Lanka and southern India.  Ditwah will bring strong winds and heavy rain to parts of Sri Lanka and Tamil Nadu.  Heavy rain could cause flash floods in some locations.  There were reports that flooding in Sri Lanka had already caused fatalities.

Tropical Cyclone Ditwah Forms Near Sri Lanka

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Tropical Cyclone Ditwah formed over the southwestern Bay of Bengal on Thursday.  At 10:00 a.m. EST on Thursday the center of Tropical Cyclone Ditwah was located at latitude 7.8°N and longitude 81.6°E which put the center about 10 miles (15 km) northwest of Batticaloa, Sri Lanka.  Ditwah was moving toward the northwest at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 40 m.p.h. (50 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1002 mb.

A low pressure system over the southwestern Bay of Bengal near Sri Lanka intensified on Thursday and the India Meteorological Department designated the system as Tropical Cyclone Ditwah.

The center of Tropical Cyclone Ditwah was near the east coast of Sri Lanka.  About half of Ditwah’s circulation was over Sri Lanka.  A band of thunderstorms was wrapped around the northern and western sides of the center of Tropical Cyclone Ditwah.  Other bands of showers and thunderstorms were revolving around the center of Ditwah’s circulation.  Storms near the center of Ditwah generated upper level divergence that pumped mass away to the west of the tropical cyclone.  The removal of mass caused the surface pressure to decrease slowly.

The distribution of wind speeds in Tropical Cyclone Ditwah was asymmetrical.  Winds to tropical storm force extended out 175 miles (280 km) in the southern half of Ditwah’s circulation.  Winds to tropical storm force extended out 80 miles (130 km) in the northern side of Tropical Cyclone Ditwah.

Tropical Cyclone Ditwah will move through an environment somewhat favorable for intensification during the next 24 hours.  Ditwah will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge that is over Southeast Asia and the Bay of Bengal.  The upper level ridge will produce southeasterly winds that will blow toward the top of Ditwah’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification.  The fact that almost half of Ditwah’s circulation is over Sri Lanka will also inhibit intensification.  Tropical Cyclone Ditwah could intensify during the next 24 hours even with moderate vertical wind shear, if the center of its circulation remains over water.

Tropical Cyclone Ditwah will move around the southwestern part of a high pressure system over the Bay of Bengal.  The high pressure system will steer Ditwah toward the northwest during the next 24 hours.  On its anticipated track, the center of Tropical Cyclone Ditwah will move along the coast of northeastern Sri Lanka.  Ditwah could approach the coast of India near Chennai within 72 hours.

Tropical Cyclone Ditwah will produce strong winds and heavy rain over Sri Lanka.  Heavy rain will cause flash floods in some locations.

Tropical Cyclone Sitrang Brings Wind and Rain to Bangladesh

Tropical Cyclone Sitrang brought wind and rain to Bangladesh on Monday. At 5:00 p.m. EDT on Monday the center of Tropical Cyclone Sitrang was located at latitude 24.6°N and longitude 91.2°E which put it about 45 miles (75 km) northeast of Dhaka, Bangladesh. Sitrang was moving toward the north at 35 m.p.h. (55 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.

Tropical Cyclone Sitrang moved quickly across the northern Bay of Bengal and over Bangladesh on Monday. The heaviest rain was falling in bands in the northern side of Sitrang’s circulation. Bands in the southern half of Tropical Cyclone Sitrang consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 60 miles (95 km) from the center of Sitrang.

A high pressure system over Southeast Asia will steer Tropical Cyclone Sitrang quickly toward the north-northeast during the next 24 hours. On its anticipated track Sitrang will move across Bangladesh and over northeastern India. Tropical Cyclone Sitrang will drop locally heavy rain over Bangladesh and northeastern India. Heavy rain could cause flash floods in some locations. Sitrang will weaken steadily as it moves farther inland.

Tropical Cyclone Sitrang Develops over Northern Bay of Bengal

Tropical Cyclone Sitrang developed over the northern Bay of Bengal on Sunday. At 11:00 p.m. EDT on Sunday the center of Tropical Cyclone Sitrang was located at latitude 18.3°N and longitude 89.4°E which put it about 360 miles (580 km) south-southwest of Chittagong, Bangladesh. Sitrang was moving toward the north-northeast at 13 m.p.h. (20 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.

The circulation around a low pressure system over the northern Bay of Bengal strengthened on Sunday and the India Meteorological Department designated the system as Tropical Cyclone Sitrang. The distribution of thunderstorms around Sitrang was asymmetrical. Thunderstorms were occurring in bands in the northern side of Tropical Cyclone Sitrang. Bands near the center of Sitrang’s circulation and in the southern half of the tropical cyclone consisted primarily of showers and lower clouds. Tropical Cyclone Sitrang was moving under the western end of an upper level ridge over Southeast Asia and the Bay of Bengal. The ridge was producing southerly winds that were blowing toward the top of Sitrang’s circulation. Those winds were causing moderate vertical wind shear and they were also causing the asymmetrical distribution of thunderstorms. Winds to tropical storm force extended out 60 miles in the eastern side of Tropical Cyclone Sitrang. The winds in the western half of Sitrang were blowing at less than tropical storm force.

Tropical Cyclone Sitrang will move through an environment somewhat favorable for intensification during the next 18 hours. Sitrang will move over water where the Sea Surface Temperatures are near 30˚C. However, the upper level ridge over Southeast Asia and the Bay of Bengal will continue to cause moderate vertical wind shear. The wind shear will inhibit intensification. Tropical Cyclone Sitrang could strengthen during the next 18 hours before it makes landfall in Bangladesh.

Tropical Cyclone Sitrang will move around the western end of a high pressure system over Southeast Asia. The high pressure system will steer Sitrang toward the north-northeast during the next 24 hours. On its anticipated track Tropical Cyclone Sitrang will reach Bangladesh in less than 24 hours. Sitrang will bring gusty winds and locally heavy rain to Bangladesh. Heavy rain could cause flash floods in some locations. Tropical Cyclone Sitrang could cause a storm surge of five feet (1.5 meters) along the coast of Bangladesh.

Tropical Cyclone Jawad Spins over Bay of Bengal

Tropical Cyclone Jawad was spinning over the Bay of Bengal east of India on Friday night. At 10:00 p.m. EST on Friday the center of Tropical Cyclone Jawad was located at latitude 16.0°N and longitude 85.0°E which put it about 150 miles (240 km) southeast of Visakhapatnam, India. Jawad was moving toward the north 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 1000 mb.

Tropical Cyclone Jawad continued to spin over the Bay of Bengal east of India on Friday night. An upper level ridge over the Bay of Bengal was producing southeasterly winds that were blowing toward the top of Jawad’s circulation. Those winds were causing moderate vertical wind shear and the shear was keeping Tropical Cyclone Jawad from getting stronger. The strongest thunderstorms in Jawad were occurring in the northern half of the circulation because of the vertical wind shear. Bands in the southern half of the circulation consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 100 miles (160 km) from the center of Tropical Cyclone Jawad.

Tropical Cyclone Jawad will move through an environment only marginally favorable for intensification during the next 24 hours. Jawad 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 over the Bay of Bengal. The ridge will continue to produce southerly winds that will blow toward the top of Jawad’s circulation. Those winds will cause moderate vertical wind shear. The wind shear is likely to remain strong enough to prevent Tropical Cyclone Jawad from strengthening during the next 24 hours.

Tropical Cyclone Jawad will move around the western end of a high pressure system over southeast Asia. The high pressure system will steer Jawad toward the north-northeast during the next several days. On its anticipated track Tropical Cyclone Jawad will move parallel to the east coast of India during the next 36 hours. Jawad could approach Kolkata in 72 hours. Tropical Cyclone Jawad could bring gusty winds and locally heavy rain to the coastal parts of northeastern Andhra Pradesh, Odisha, and West Bengal.

Tropical Cyclone 05B Forms over Bay of Bengal

Tropical Cyclone 05B formed over the Bay of Bengal on Thursday night. At 10:00 p.m. EST on Thursday the center of Tropical Cyclone 05B was located at latitude 14.4°N and longitude 85.8°E which put it about 360 miles (580 km) southeast of Visakhapatnam, India. Tropical Cyclone 05B was moving toward the northwest at 16 m.p.h. (26 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 1001 mb.

A low pressure system over the central Bay of Bengal strengthened on Thursday night into Tropical Cyclone 05B. The distribution of thunderstorms around Tropical Cyclone 05B was asymmetrical. The strongest thunderstorms were occurring in bands in the northern half of the tropical cyclone. Bands in the southern half of the circulation consisted primarily of showers and lower clouds. The thunderstorms in the northern half of the circulation generated upper level divergence that pumped mass away to the north of the tropical cyclone. The distribution of wind speeds was also asymmetrical. Winds to tropical storm force extended out 150 miles (240 km) in the northern half of the tropical cyclone. The winds in the southern half of the circulation were blowing at less than tropical storm force.

Tropical Cyclone 05B will move through an environment favorable for intensification during the next 24 hours. The tropical cyclone 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 over the Bay of Bengal. The ridge will produce southerly winds that will blow toward the top of the tropical cyclone. Those winds will cause some vertical wind shear, but the wind shear will not be strong enough to prevent intensification. Tropical Cyclone 05B is likely to intensify during the next 24 hours. The India Meteorological Department will likely give the tropical cyclone a name on Friday.

Tropical Cyclone 05B will move around the western end of a high pressure system over southeast Asia. The high pressure system will steer the tropical cyclone toward the northwest during the next 24 hours. On its anticipated track Tropical Cyclone 05B will approach the coast of India northeast of Visakhapatnam in 24 hours. It will bring gusty winds and locally heavy rain to the coastal parts of northeastern Andhra Pradesh and Orissa. Tropical Cyclone 05B will move more slowly after it nears the coast and it could turn toward the northeast during the weekend.

Tropical Cyclone Burevi Stalls over Gulf of Mannar

Tropical Cyclone Burevi stalled over the Gulf of Mannar on Friday. At 4:00 p.m. EST on Friday the center of Tropical Cyclone Burevi was located at latitude 9.0°N and longitude 79.4°E which put it about 80 miles (130 km) east of Toothukudi, India. Burevi was nearly stationary. 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 1003 mb.

Tropical Cyclone Burevi stalled over the Gulf of Mannar between Sri Lanka and the southern tip of India on Friday. Although the center of Burevi was over water, the tropical cyclone weakened since some of the circulation passed over Sri Lanka or southern India. The parts of the circulation that were over land experienced increased friction and were unable to extract as much energy from the surface. The wind speeds around Tropical Cyclone Burevi decreased gradually as a result of more friction and less available energy.

Tropical Cyclone Burevi dropped locally heavy rain over parts of southern Tamil Nadu and Kerala in India. Persistent rain fell in some locations because Burevi stalled. If the rain continues to fall over the same locations, then flash floods are likely to occur.

A high pressure system over India could start to push Tropical Cyclone Burevi toward the west during the weekend. Burevi will weaken further if the center moves across southern India. Tropical Cyclone Burevi could strengthen slowly next week, if the circulation is still relatively intact when it reaches the Arabian Sea.

Tropical Cyclone Burevi Rains on Sri Lanka and Southern India

Tropical Cyclone Burevi dropped rain on northern Sri Lanka and southern India on Wednesday night. At 10:00 p.m. EST on Wednesday the center of Tropical Cyclone Burevi was located at latitude 9.1°N and longitude 80.4°E which put it about 50 miles (80 km) south-southeast of Jaffna, Sri Lanka. Burevi was moving toward the west 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 997 mb.

The center of Tropical Cyclone Burevi made landfall on the coast of Sri Lanka north of Trincomalee on Wednesday. The center moved westward across northern Sri Lanka after it made landfall. Bands of showers and thunderstorms in the northern and western parts of Burevi dropped rain over northern Sri Lanka, southern Tamil Nadu and southern Kerala. Prolonged rain could cause flash floods in some locations.

Tropical Cyclone Burevi could weaken during the next few hours while the center is over northern Sri Lanka. The center of Burevi will move over the Gulf of Mannar in a few hours. The center of Tropical Cyclone Burevi could make another landfall on the coast of southern India near Thoothukudi in about 18 hours. Burevi will move across the southernmost parts of Tamil Nadu and Kerala. Tropical Cyclone Burevi could move over the Arabian Sea in about 36 hours. Burevi could slowly strengthen when it moves over the Arabian Sea.