Tag Archives: Bangladesh

Tropical Cyclone Mocha Strengthens to Equivalent of a Major Hurricane

Tropical Cyclone Mocha strengthened to the equivalent of a major hurricane over the Bay of Bengal on Friday. At 5:00 p.m. EDT on Friday the center of Tropical Cyclone Mocha was located at latitude 15.2°N and longitude 88.9°E which put it about 545 miles (880 km) south-southwest of Cox’s Bazar, Bangladesh. Mocha was moving toward the north-northeast at 5 m.p.h. (8 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 945 mb.

Tropical Cyclone Mocha rapidly intensified to the equivalent of a major hurricane over the Bay of Bengal on Friday. A circular eye was present at the center of Mocha’s circulation. A ring of strong thunderstorms surrounded the eye and the strongest winds were occurring in that band of storms. Storms near the center of circulation generated strong upper level divergence that pumped a large quantity of mass away from the tropical cyclone. The removal of mass allowed the surface pressure to decrease rapidly.

The circulation around Tropical Cyclone Mocha was large. Winds to hurricane/typhoon force extended out 35 miles (55 km) from the center of Mocha’s circulation. Winds to tropical storm force extended out 200 miles (320 km) from the center. The Hurricane Intensity Index (HII) for Tropical Cyclone Mocha was 23.6. The Hurricane Size Index (HSI) was 12.6 and the Hurricane Wind Intensity Size Index (HWISI) was 36.2. Tropical Cyclone Mocha was capable of causing major damage.

Tropical Cyclone Mocha will move through an environment favorable for intensification during the next 24 hours. Mocha will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the center of an upper level ridge over the Bay of Bengal. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Tropical Cyclone Mocha is likely to intensify during the next 24 hours.

Tropical Cyclone Mocha will move around the western end of a high pressure system that extends from the Western North Pacific Ocean to Southeast Asia. The high pressure system will steer Mocha toward the north-northeast during the next 48 hours. Tropical Cyclone Mocha is likely to make landfall near the border between Bangladesh and Myanmar during the weekend. Mocha is likely to be the equivalent of a major hurricane when it makes landfall. Tropical Cyclone Mocha will bring strong winds and locally heavy rain to Myanmar and Bangladesh. Heavy rain is likely to cause flash floods in some locations. Mocha could also cause a storm surge of up to 13 feet (4 meters) along portions of the coast where the wind blows the water toward the shore.

Tropical Cyclone Mocha Intensifies to Equivalent of Hurricane/Typhoon

Tropical Cyclone Mocha intensified to the equivalent of a hurricane/typhoon over the Bay of Bengal on Thursday night. At 11:00 p.m. EDT on Thursday the center of Tropical Cyclone Mocha was located at latitude 13.6°N and longitude 88.3°E which put it about 670 miles (1080 km) south-southwest of Cox’s Bazar, Bangladesh. Mocha was moving toward the north 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 981 mb.

Tropical Cyclone Mocha intensified rapidly to the equivalent of a hurricane/typhoon on Thursday. The inner end of a rainband wrapped around the center of Mocha’s circulation. An eye was evident at the center of Tropical Cyclone Mocha on microwave satellite images. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Mocha’s circulation. Storms near the center of circulation generated strong upper level divergence that pumped mass away from the tropical cyclone. The removal of mass caused the surface pressure to decrease steadily. Winds to hurricane/typhoon force extended out 35 miles (55 km) from the center of Tropical Cyclone Mocha. Winds to tropical storm force extended out 200 miles (320 km) from the center of Mocha’s circulation.

Tropical Cyclone Mocha will move through an environment very favorable for intensification during the next 36 hours. Mocha will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the center of an upper level ridge over the Bay of Bengal. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Tropical Cyclone Mocha will intensify during the next 36 hours. Mocha could intensify rapidly at times. Mocha is likely to intensify to the equivalent of a major hurricane within 36 hours .

Tropical Cyclone Mocha will move around the western end of a high pressure system that extends from the Western North Pacific Ocean to Southeast Asia. The high pressure system will steer Mocha toward the north-northeast during the next 48 hours. Tropical Cyclone Mocha is likely to make landfall near the border between Bangladesh and Myanmar during the weekend. Mocha is likely to be the equivalent of a major hurricane when it makes landfall. Tropical Cyclone Mocha will bring strong winds and locally heavy rain to Myanmar and Bangladesh. Heavy rain is likely to cause flash floods in some locations. Mocha could also cause a storm surge of up to 13 feet (4 meters) along portions of the coast where the wind blows the water toward the shore.

Tropical Cyclone Mocha Develops over Bay of Bengal

Tropical Cyclone Mocha developed over the Bay of Bengal on Thursday morning. At 5:00 a.m. EDT on Thursday the center of Tropical Cyclone Mocha was located at latitude 11.2°N and longitude 88.1°E which put it about 310 miles (500 km) west of Port Blair. Mocha was moving toward the north-northwest at 4 m.p.h. (6 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 993 mb.

A low pressure system over the Bay of Bengal strengthened during Wednesday night and the India Meteorological Department classified the system as Tropical Cyclone Mocha. The circulation around Tropical Cyclone Mocha was organizing rapidly on Thursday morning. The inner end of a rainband wrapped around the center of Mocha’s circulation and a large eye appeared to be forming. Bands of showers and thunderstorms were revolving around the developing inner core of Tropical Cyclone Mocha. Storms near the center of circulation generated strong upper level divergence that pumped mass away from the tropical cyclone. The removal of mass was causing the surface pressure to decrease. Winds to tropical storm force extended out 115 miles (185 km) from the center of Mocha’s circulation.

Tropical Cyclone Mocha will move through an environment very favorable for intensification during the next 48 hours. Mocha will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the center of an upper level ridge over the Bay of Bengal. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Tropical Cyclone Mocha will intensify during the next 48 hours. Mocha could intensify rapidly once the inner core with an eye and eyewall are completely formed. Mocha is likely to intensify to the equivalent of a hurricane/typhoon during the next 24 hours. Mocha could intensify to the equivalent of a major hurricane in two or three days.

Tropical Cyclone Mocha will move around the western end of a high pressure system that extends from the Western North Pacific Ocean to Southeast Asia. The high pressure system will steer Mocha toward the north during the next 24 hours. Mocha will start to move toward the north-northeast on Friday after it moves around the western end of the high pressure system. Tropical Cyclone Mocha is likely to make landfall near the border between Bangladesh and Myanmar during the weekend. Mocha could be the equivalent of a major hurricane when it makes landfall. Tropical Cyclone Mocha will bring strong winds and locally heavy rain to Myanmar and Bangladesh. Heavy rain is likely to cause flash floods in some locations. Mocha could also cause a storm surge of up to 10 feet (3 meters) along portions of the coast where the wind blows the water toward the shore.

Tropical Cyclone Forming over Bay of Bengal

A tropical cyclone was forming over the Bay of Bengal on Tuesday morning. At 11:00 a.m. EDT on Tuesday the center of a low pressure system was located at latitude 8.3°N and longitude 88.3°E which put it about 370 miles (595 km) southwest of Port Blair. The low pressure system was moving toward the northwest at 10 m.p.h. (16 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.

A low pressure system was strengthening over the southern Bay of Bengal on Tuesday morning. The India Meteorological Department classified the system as a well marked low pressure system and the Joint Typhoon Warning Center designated the system as Invest 91B. The circulation around the low pressure system exhibited more organization on Tuesday morning. Several bands of showers and thunderstorms were beginning to revolve around the center of circulation. The strongest bands were in the southern and western parts of the low pressure system. Storms near the center of circulation began to generate upper level divergence that pumped mass away from the low pressure system. The removal of mass was causing the surface pressure to decrease.

The low pressure system will move through an environment favorable for intensification during the next few days. The low pressure system will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the center of an upper level ridge over the Bay of Bengal. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. The low pressure system will intensify during the next 48 hours. It is likely to strengthen to a tropical cyclone during the next 24 hours. The low pressure system is likely to intensify to the equivalent of a hurricane/typhoon later this week.

The low pressure system will move around the western end of a high pressure system that extends from the Western North Pacific Ocean to Southeast Asia. The high pressure system will steer the low pressure system toward the north during the next 24 hours. On its anticipated track the center of circulation will pass west of the Andaman Islands and the Nicobar Islands. Bands of showers and thunderstorms in the eastern side of the circulation will bring gusty winds and locally heavy rain to the Andaman Islands and the Nicobar Islands. The low pressure system will move toward the north-northeast later this week. It is likely to make landfall near the border between Bangladesh and Myanmar in a few days. The low pressure system is likely to be the equivalent of a hurricane/typhoon when it makes landfall.

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 Forms over Bay of Bengal

A tropical cyclone formed over the Bay of Bengal on Sunday night. At 11:00 p.m. EDT on Sunday the center of a tropical cyclone was located at latitude 16.2°N and longitude 89.8°E which put it about 465 miles (750 km) south-southeast of Kolkata, India. The tropical cyclone was moving toward the northeast at 8 m.p.h. (13 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 993 mb.

A low pressure system over the Bay of Bengal strengthened on Sunday night and the system was designated as Tropical Cyclone 02B by the Joint Typhoon Warning Center. The circulation around the tropical cyclone was still organizing. Many of the thunderstorms were occurring in bands in the outer portion of the circulation around the tropical cyclone. The inner end of a rainband began to wrap around the western side of the center of circulation. The circulation around the tropical cyclone was large. Winds to tropical storm force extended out 175 miles (280 km) from the center of circulation.

The tropical cyclone will move through an environment favorable for intensification during the next 48 hours. It will move over water where the Sea Surface Temperatures are near 31°C. The tropical cyclone will move under the southern part of an upper level ridge over the Bay of Bengal. The ridge will produce easterly winds which will blow toward the top of the tropical cyclone. Those winds will cause some vertical wind shear, but the shear will not be enough to prevent intensification. The tropical cyclone will intensify during the next 24 hours. It could intensify more rapidly once an inner core with an eye and an eyewall form. The tropical cyclone could strengthen to the equivalent of a hurricane/typhoon within 36 hours.

The tropical cyclone will move around the western side of a high pressure system over Southeast Asia. The high will steer the tropical cyclone toward the north-northwest during the next 48 hours. On its anticipated track the tropical cyclone could approach the coastline of Odisha and West Bengal in 48 hours. It will likely be the equivalent of a hurricane/typhoon when it approaches the coast. The tropical cyclone is likely to bring damaging winds, and locally heavy rain. It will also likely cause a dangerous storm surge on parts of the coast around the northern Bay of Bengal.

Tropical Cyclone Amphan Makes Landfall Near Kolkata

The center of Tropical Cyclone Amphan made landfall on the north coast of the Bay of Bengal near Kolkata, India on Wednesday.  At 11:00 a.m. EDT on Wednesday the center of Tropical Cyclone Amphan was located at latitude 22.7°N and longitude 88.4°E which put it about 30 miles (50 km) south-southwest of Kolkata, India.  Amphan was moving toward the north-northeast at 19 m.p.h. (30 km/h).  The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 105 m.p.h. (165 km/h).  The minimum surface pressure was 979 mb.

The center of Tropical Cyclone Amphan made landfall near Haldia, India which is a little to the south-southwest of Kolkata on Wednesday.  The maximum sustained wind speed in Amphan at the time of landfall was 100 m.p.h. (160 km/h).  Tropical Cyclone Amphan weakened after the center moved over land.  Winds to hurricane/typhoon force extended out 20 miles (30 km) from the center of circulation.  Winds to tropical storm force extended out 160 miles (260 km) to the southeast of the center.  The stronger winds were occurring near the center of circulation and over the northern Bay of Bengal.

When Tropical Cyclone Amphan approached the coast, the heaviest rain occurred in bands in the western side of Amphan.  Heavy rain fell over parts of northern Odisha and West Bengal.  After the center of Amphan made landfall and the tropical cyclone moved inland, the heaviest rain fell in bands in the northeastern part of the circulation.  Heavy rain was falling over parts of Bangladesh.

Strong southerly winds blowing toward the north coast of the Bay of Bengal pushed water toward Bangladesh and the coast of India south of Kolkata.  The coast around the northern Bay of Bengal is very vulnerable to storm surges caused by tropical cyclones.  Tropical Cyclone Amphan likely caused a significant storm surge along that coast.

Tropical Cyclone Amphan will move around the northwestern part of a high pressure system over Southeast Asia.  The high will steer Amphan toward the north-northeast.  On its anticipated track the center of Tropical Cyclone Amphan will move across western Bangladesh and northeastern India.  The circulation around Amphan will continue to weaken as the system moves farther inland.  Tropical Cyclone Amphan will continue to drop locally heavy rain over Bangladesh and northeastern India.  Heavy rain could cause flash floods to occur in some locations.

Large Dangerous Tropical Cyclone Amphan Nears Kolkata and Bangladesh

Large dangerous Tropical Cyclone Amphan neared Kolkata, India and Bangladesh late on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Cyclone Amphan was located at latitude 18.8°N and longitude 87.0°E which put it about 310 miles (505 km) south-southwest of Kolkata, India.  Amphan was moving toward the north at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 145 m.p.h. (230 km/h).  The minimum surface pressure was 951 mb.

Tropical Cyclone Amphan was the equivalent of a major hurricane as it neared Kolkata, India and the coast of Bangladesh on Tuesday.  An eyewall replacement cycle caused the circulation around Amphan to expand in size.  Some satellite images showed evidence of the remnants of the original small inner eye inside the larger second eye.  The larger eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Amphan.

Tropical Cyclone Aphan had a large circulation that covered much of the northern Bay of Bengal.  Winds to hurricane/typhoon force extended out 50 miles (80 km) from the center of circulation.  Winds to tropical storm force extended out 230 miles (370 km) from the center.  The Hurricane Intensity Index (HII) for Tropical Cyclone Amphan was 20.6.  The Hurricane Size Index (HSI) was 20.8 and the Hurricane Wind Intensity Size Index (HWISI) was 41.4.  Amphan was capable of causing major damage.

Tropical Cyclone Amphan will move through an environment capable of supporting a large powerful tropical cyclone during the next 12 to 18 hours.  Amphan will move over water where the Sea Surface Temperature is near 30°C.  It will move under the western side of an upper level ridge.  The upper level winds will be weak and there will be little vertical wind shear.  The circulation around Tropical Cyclone Amphan could start to pull in some drier air that is over eastern India when it get closer to the coast.  Amphan will remain a large dangerous tropical cyclone until it makes landfall on the north coast of the Bay of Bengal.

Tropical Cyclone Amphan will move around the western end of a high pressure system over Southeast Asia.  The high will steer Amphan toward the north-northeast during the next 36 hours.  On its anticipated track the center of Tropical Cyclone Amphan will pass near Puri, India in about 12 hours.  The center of Amphan could make landfall south of Kolkata near Haldia, India in about 18 hours.  Tropical Cyclone Amphan could cause major damage.  The wind will blow water toward the coast around the northern Bay of Bengal.  Amphan could generate a storms surge of up to 12 to 15 feet (3 to 4 meters) along past of the Bangladesh coast.  Tropical Cyclone Amphan will also drop heavy rain over parts of northeastern India and Bangladesh when it moves inland.  The heavy rain is likely to cause floods in some locations.

 

Tropical Cyclone Amphan Intensifies Into Equivalent of Cat. 5 Hurricane

Tropical Cyclone Amphan intensified into equivalent of a Category 5 hurricane on the Saffir-Simpson Scale over the Bay of Bengal on Monday.  At 5:00 a.m. EDT on Monday the center of Tropical Cyclone Amphan was located at latitude 13.9°N and longitude 86.5°E which put it about 635 miles (1025 km) south-southwest of Kolkata, India.  Amphan was moving toward the north at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 160 m.p.h. (260 km/h) and there were wind gusts to 195 m.p.h. (315 km/h).  The minimum surface pressure was 909 mb.

The circulation around Tropical Cyclone Amphan appeared to develop a concentric eyewall structure on Monday.  The inner end of a rainband wrapped around the original small eye and eyewall.  The inner eye had a diameter of 10 miles (16 km).  A ring of strong thunderstorms surrounded the inner eye and the strongest winds were occurring in that ring of storms.  An outer eyewall with a diameter of 50 mile (80 km) surrounded the inner eye.    Bands of showers and thunderstorms were revolving around the concentric eyewalls.  Storms in the core of Amphan were generating strong upper level divergence which was pumping mass away from the tropical cyclone in all directions.

Tropical Cyclone Amphan had a large circulation.  Winds to hurricane/typhoon force extended out 60 miles (95 km) from the center of circulation.  Winds to tropical storm force extended out 200 miles (325 km) from the center.  The Hurricane Intensity Index (HII) for Tropical Cyclone Amphan was 35.0.  The Hurricane Size Index (HSI) was 16.5 and the Hurricane Wind Intensity Size Index (HWISI0 was 51.5.  Tropical Cyclone Amphan was capable of causing catastrophic damage.

Tropical Cyclone Amphan will move through an environment very favorable for a strong tropical cyclone during the next 36 hours.  Amphan will move over water where the Sea Surface Temperature is near 31°C.  It will move under an upper level ridge where the upper level winds are weak.  There will be little vertical wind shear.  The eyewall replacement cycle will stop the intensification of Tropical Cyclone Amphan.  Amphan will weaken, at least temporarily, when the inner eyewall dissipates.  When that occurs the strongest winds will be occurring in the outer eyewall.  The eyewall replacement cycle could cause the circulation to increase in size.

Tropical Cyclone Amphan will move around the western end of a high pressure system over Southeast Asia.  The high will steer Amphan toward the north-northeast.  On its anticipate track the center of Tropical Cyclone Amphan will approach the coast around the northern Bay of Bengal in 36 hours.  Amphan will be a large dangerous tropical cyclone when it approaches the coast.  Tropical Cyclone Amphan will generate a significant storm surge along the coast of Bangladesh.  Amphan will cause major wind damage.  It will drop locally heavy rain over northeast India and Bangladesh.  Freshwater flooding will occur.