Tag Archives: West Bengal

Powerful Tropical Cyclone Fani Makes Landfall in India

Powerful Tropical Cyclone Fani made landfall near Puri, India on Thursday night.  At 11:00 p.m. EDT on Thursday the center of Tropical Cyclone Fani was located at latitude 19.4°N and longitude 85.8°E which put it about 25 miles (40 km) south of Puri, India.  Fani was moving toward the north-northeast at 11 m.p.h. (17 km/h).  The maximum sustained wind speed was 150 m.p.h. (240 km/h) and there were wind gusts to 185 m.p.h. (295 km/h).  The minimum surface pressure was 922 mb.

Tropical Cyclone Fani is a large dangerous system.  Winds to hurricane/typhoon force extend out about 70 miles (110 km) from the center of circulation.  Winds to tropical storm force extend out about 225 miles (360 km) from the center over the Bay of Bengal.  The Hurricane Intensity Index (HII) for Tropical Cyclone Fani is 31.6.  The Hurricane Size Index (HSI) is 25.6 and the Hurricane Wind Intensity Size Index (HWISI) is 57.2.  Tropical Cyclone Fani has the potential to cause widespread significant damage.

Tropical Cyclone Fani will cause the greatest wind damage along the northeast coast of Odisha.  It could also produce a significant storm surge along the coast.  The surge will be highest in bays, estuaries and mouths of rivers.  Fani will drop heavy rain over northeast Odisha, West Bengal and portions of Bangladesh.  The heavy rain is likely to cause inland fresh water floods in some locations.  Wind and rain could cause damage around Kolkata (Calcutta), India.

An upper level trough over India will steer Tropical Cyclone Fani toward the northeast during the next 48 hours.  On its anticipated path Fani will pass near Bhubaneshwar, Cuttack and Baleshwar in Odisha.  Tropical Cyclone Fani could still be the equivalent of a hurricane/typhoon when it passes near those locations.  Fani will weaken steadily while it moves northeast.  It is likely to be the equivalent of a tropical storm when it passes near Kolkata.  Tropical Cyclone Fani will weaken to the equivalent of a tropical depression when it passes over Bangladesh, but it could still drop heavy rain around Dhaka.  Serious flooding could occur in Bangladesh while Fani weakens.

Dangerous Tropical Cyclone Fani Near Northeast India

Dangerous Tropical Cyclone Fani neared the coast of northeastern India on Thursday.  Fani rapidly intensified into the nearly the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale.  At 11:00 a.m. EDT on Thursday the center of Tropical Cyclone Fani was located at latitude 18.0°N and longitude 84.9°E which put it about 100 miles (160 km) east of Visakhapatnam, India.  Fani was moving toward the north at 11 m.p.h. (17 km/h).  The maximum sustained wind speed was 155 m.p.h. (250 km/h) and there were wind gusts to 190 m.p.h. (305 km/h).  The minimum surface pressure was 918 mb.

Tropical Cyclone Fani intensified rapidly during recent hours.  A circular eye with a diameter of 20 miles (32 km) developed at the center of circulation.  A ring of strong thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Fani.  Storms near the core were generating strong upper level divergence which was pumping mass away from the tropical cyclone.

The circulation around Tropical Cyclone Fani grew larger as it intensified.  Winds to hurricane/typhoon force extended out about 60 miles (95 km) from the center of circulation.  Winds to tropical storm force extended out about 185 miles (295 km) from the center.  The Hurricane Intensity Index (HII) for Tropical Cyclone Fani was 33.3.  The Hurricane Size Index (HSI) was 21.7 and the Hurricane Wind Intensity Size Index (HWISI) was 55.0.  Tropical Cyclone Fani was capable of causing widespread significant damage.

Tropical Cyclone Fani is moving around the western end of a subtropical ridge.  The ridge is steering Fani toward the north.  On its anticipated track Tropical Cyclone Fani is likely to make landfall near Brahmapur, India in about 12 hours.  An upper level trough over India will steer Fani toward the northeast after it makes landfall.  Tropical Cyclone Fani could pass near Puri, Bhubaneswar, Cuttack and Kolkata (Calcutta), India.

Tropical Cyclone Fani will remain in a favorable environment during the 12 hours prior to landfall.  Fani will be over water where the Sea Surface Temperature is near 30°C.  It will move through an environment where the upper level winds are weak and there will be little vertical wind shear.  Tropical Cyclone Fani will weaken after landfall.  The upper level trough over India will produce stronger southwesterly winds, which will increase the vertical wind shear after Fani makes landfall.  More wind shear and more friction over the land will cause Tropical Cyclone Fani to weaken to the equivalent of a tropical storm within 24 hours after landfall occurs.

Tropical Cyclone Fani is a dangerous tropical cyclone.  The strengthen and size of Fani will create the potential for widespread significant damage.  The counterclockwise circulation will cause the winds to blow water toward the coast along the northern Bay of Bengal.  Tropical Cyclone Fani could generate a storm surge of 15 to 20 feet (4.5 to 6.0 meters) in bays, estuaries and the mouths of rivers which act as funnels during storm surges.  Heavy rain could cause inland fresh water flooding in parts of northeastern India and Bangladesh.  The greatest threats are to the Indian states of Odisha (Orissa) and West Bengal.

Tropical Cyclone Fani Strengthens to Equivalent of Major Hurricane

Tropical Cyclone Fani strengthened to the equivalent of a major hurricane on Tuesday.  At 11:00 p.m. EDT on Tuesday the center of Tropical Cyclone Fani was located at latitude 14.1°N and longitude 83.9°E which put it about 670 miles (1080 km) south-southwest of Kolkata (Calcutta), India.  Fani was moving toward the northwest at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 150 m.p.h. (240 km/h).  The minimum surface pressure was 946 mb.

Tropical Cyclone Fani strengthened on Tuesday.  A small eye emerged at the center of circulation.  The eye was surround by a ring of thunderstorms.  The storms were stronger in the western half of the ring and that was where the strongest winds were.  Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Fani.  The stronger bands were south and west of the center of Fani.  It appeared that a little drier air may have been pulled into the northern half of the circulation and the bands were weaker in that part of the circulation.  Storms near the core were generating upper level divergence which was pumping mass away from the tropical cyclone.

Tropical Cyclone Fani had a moderately sized circulation.  Winds to hurricane/typhoon force extended out about 40 miles (65 km) from the center of circulation.  Winds to tropical storm force extended out about 150 miles (240 km) from the center.  The Hurricane Intensity Index (HII) for Tropical Cyclone Fani was 22.1.  The Hurricane Size Index (HSI) was 14.7 and the Hurricane Wind Intensity Size Index (HWISI) was 36.8.

Tropical Cyclone Fani will remain in an environment favorable for strong tropical cyclones during the next 24 to 36 hours.  Fani will move over water where the Sea Surface Temperature is near 30°C.  It will move near the western end of an upper level ridge and the upper level winds will not be too strong.  The major inhibiting factor will be the drier air over the northern half of the circulation.  Tropical Cyclone Fani could maintain its intensity and even strengthen during the next 24 hours if the drier air moistens over the warm water of the Bay of Bengal.

Tropical Cyclone Fani will move around the western end of a subtropical ridge on Wednesday.  Fani will move more toward the north when it rounds the end of the ridge.  An upper level trough approaching India from the west will turn Tropical Cyclone Fani toward the northeast in about 18 to 24 hours.  On its anticipated track Fani could approach the coast of Orissa state southwest of Kolkata in about 48 hours.  Tropical Cyclone Fani could bring strong winds to parts of Orissa and West Bengal.  Fani could also cause a significant storm surge along portions of the coast around the northern Bay of Bengal.  Locally heavy rain could also cause floods in Orissa and West Bengal.

Tropical Cyclone Fani Strengthens to Equivalent of Hurricane/Typhoon

Tropical Cyclone Fani strengthened to the equivalent of a hurricane/typhoon over the Bay of Bengal on Monday.  At 5:00 p.m. EDT on Monday the center of Tropical Cyclone Fani was located at latitude 11.4°N and longitude 86.9°E which put it about 800 miles (1290 km) south of Kolkata (Calcutta), India.  Fani was moving toward the north at 10 m.p.h. (16 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 974 mb.

The circulation around Tropical Cyclone Fani exhibited greater organization on Monday.  The inner end of a rainband wrapped most of the way around the eastern and northern sides of the center of circulation.  Although there was still a break on the southwestern side of the center, an eye may have been forming at the center of circulation.  Bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Fani and the circulation was much more symmetrical.  Storm around the core were generating upper level divergence which was pumping mass away from the tropical cyclone.  Winds to tropical storm force extended out about 140 miles (225 km) from the center of circulation.

Tropical Cyclone Fani will move through an environment favorable for intensification during the next several days.  Fani will move over water where the Sea Surface Temperature is near 31°C.  It will move under the axis of an upper level ridge where the winds are weak.  Very warm water and little vertical wind shear will allow Tropical Cyclone Fani to intensify during the next 48 hours.  It could intensify rapidly once the inner core is fully developed.  Fani is likely to strengthen into the equivalent of a major hurricane during the next  2 to 3 days.

Tropical Cyclone Fani will move around the western end of a subtropical ridge during the next few days.  The ridge will steer Fani in a generally northward direction.  On its anticipated track Tropical Cyclone Fani could approach the coast of India southwest of Kolkata in three or four days.  Fani could be the equivalent of a major hurricane when it approaches the coast.  Tropical Cyclone Fani has the potential to cause major wind damage.  It will also generate a dangerous storm surge along the coast.  Heavy rain will create the potential for fresh water flooding in inland locations.  The greatest risks at this time are for the Indian states of Orissa and West Bengal.