Tag Archives: SH18

Tropical Cyclone Neville Weakens Over South Indian Ocean

Tropical Cyclone Neville weakened over the South Indian Ocean on Sunday. At 11:00 a.m. EDT on Sunday the center of Tropical Cyclone Neville was located at latitude 23.5°S and longitude 88.8°E which put it about 930 miles (1500 km) south-southwest of the Cocos Islands. Neville was moving toward the southwest 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 1002 mb.

Tropical Cyclone Neville was weakening rapidly over the South Indian Ocean on Sunday. Neville was under the eastern part of an upper level trough. The upper level trough was producing strong northwesterly winds that were blowing across the top of Neville’s circulation. Those winds were causing strong vertical wind shear. The strong wind shear was making the distribution of thunderstorms in Tropical Cyclone Neville asymmetrical. Thunderstorms were still occurring in the southeastern quadrant of Neville’s circulation. Bands in the other parts of Tropical Cyclone Neville consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 75 miles (120 km) from the center of circulation.

Tropical Cyclone Neville will move through an environment that will be unfavorable for intensification during the next 36 hours. Neville will move over water where the Sea Surface Temperatures are near 25°C. The upper level trough over the South Indian Ocean will continue to produce strong northwesterly winds that will blow toward the top of Neville’s circulation. Those winds will continue to cause strong vertical wind shear. Tropical Cyclone Neville will weaken during the next 36 hours.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west-southwest during the next 36 hours. On its anticipated track, Tropical Cyclone Neville will remain far southeast of Diego Garcia.

Tropical Cyclone Neville Passes South of Cocos Islands

Tropical Cyclone Neville passed south of the Cocos Islands on Saturday. At 11:00 a.m. EDT on Saturday the center of Tropical Cyclone Neville was located at latitude 20.8°S and longitude 93.1°E which put it about 630 miles (1015 km) south-southwest of the Cocos, Islands. Neville was moving toward the west-southwest at 16 m.p.h. (26 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 985 mb.

Tropical Cyclone Neville was weakening as it moved over the South Indian Ocean south of the Cocos Islands on Saturday. The distributions of thunderstorms and clouds in Neville was becoming asymmetrical. Some drier air appeared to be entering the northeastern part of Neville’s circulation. Thunderstorms were occurring in bands in the southern and western parts of Tropical Cyclone Neville. Bands in the northern and eastern parts of Neville’s circulation consisted primarily of showers and lower clouds.

Storms near the center of Tropical Cyclone Neville still generated upper level divergence that pumped mass away to the south of the tropical cyclone. Winds to hurricane/typhoon force extended out 25 miles (40 km) from the center of Neville’s circulation. Winds to tropical storm force extended out 130 miles (210 km) from the center of circulation.

Tropical Cyclone Neville will move through an environment that will be unfavorable for intensification during the next 24 hours. Neville will move over water where the Sea Surface Temperatures are near 28°C. However, an upper level trough over the South Indian Ocean will produce northwesterly winds that will blow toward the top of Neville’s circulation. Those winds will also cause the vertical wind shear to increase. Tropical Cyclone Neville will weaken during the next 24 hours.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west-southwest during the next 24 hours. On its anticipated track, Tropical Cyclone Neville will remain far southeast of Diego Garcia.

Tropical Cyclone Neville Spins Southeast of Cocos Islands

Tropical Cyclone Neville was spinning over the South Indian Ocean southeast of the Cocos Islands on Friday morning. At 11:00 a.m. EDT on Friday the center of Tropical Cyclone Neville was located at latitude 18.6°S and longitude 98.7°E which put it about 445 miles (720 km) south-southeast of the Cocos, Islands. Neville was moving toward the west-southwest at 16 m.p.h. (26 km/h). The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h). The minimum surface pressure was 968 mb.

A small circular eye with a diameter of 10 miles (16 km) was at the center of Neville’s circulation. The eye was surrounded by a 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 Tropical Cyclone Neville. Storms near the center of Neville generated upper level divergence that pumped mass away from the tropical cyclone.

The circulation around Tropical Cyclone Neville was small. Winds to hurricane/typhoon force extended out 25 miles (40 km) from the center of Neville’s circulation. Winds to tropical storm force extended out 140 miles (220 km) from the center of circulation. The Hurricane Intensity Index (HII) for Tropical Cyclone Neville was 17.8. The Hurricane Size Index (HSI) was 9.0 and the Hurricane Wind Intensity Size Index (HWISI) was 26.8.

Tropical Cyclone Neville will move through an environment that will become less favorable for intensification during the next 24 hours. Neville will move over water where the Sea Surface Temperatures are near 28°C. An upper level trough over the South Indian Ocean will approach Neville’s circulation from the west. The upper level trough will produce northwesterly winds that will blow toward the top of Neville’s circulation. Those winds will also cause the vertical wind shear to increase. Tropical Cyclone Neville is likely to weaken when the vertical wind shear increases.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west-southwest during the next 24 hours. On its anticipated track, Tropical Cyclone Neville will pass south of the Cocos Islands later today.

Tropical Cyclone Neville Rapidly Intensifies to Equivalent of a Major Hurricane

Tropical Cyclone Neville rapidly intensified to the equivalent of a major hurricane over the South Indian Ocean east-southeast of the Cocos Islands on Thursday morning. At 11:00 a.m. EDT on Thursday the center of Tropical Cyclone Neville was located at latitude 17.7°S and longitude 104.3°E which put it about 620 miles (1000 km) east-southeast of the Cocos, Islands. Neville was moving toward the west at 9 m.p.h. (15 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 956 mb.

Tropical Cyclone Neville rapidly intensified to the equivalent of a major hurricane over the South Indian Ocean on Wednesday morning. A small circular eye was at the center of Neville’s circulation. The eye was surrounded by a 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 Tropical Cyclone Neville. Storms near the center of Neville generated strong upper level divergence that pumped mass away from the tropical cyclone in all directions. The removal of large quantities of mass caused the surface pressure to decrease rapidly.

The circulation around Tropical Cyclone Neville was small. Winds to hurricane/typhoon force extended out 20 miles (30 km) from the center of Neville’s circulation. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation. The Hurricane Intensity Index (HII) for Tropical Cyclone Neville was 22.1. The Hurricane Size Index (HSI) was 7.2 and the Hurricane Wind Intensity Size Index (HWISI) was 29.3.

Tropical Cyclone Neville will move through an environment favorable for intensification during the next 24 hours. Neville will move over water where the Sea Surface Temperatures are near 29°C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Cyclone Neville will intensify during the next 24 hours. Neville could continue to intensify rapidly during the next few hours.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west during the next 24 hours. On its anticipated track, Tropical Cyclone Neville will pass south of the Cocos Islands on Friday.

Tropical Cyclone Neville Intensifies to Equivalent of Hurricane/Typhoon

Tropical Cyclone Neville intensified to the equivalent of a hurricane/typhoon over the South Indian Ocean northwest of Australia on Wednesday evening. At 11:00 p.m. EDT on Wednesday the center of Tropical Cyclone Neville was located at latitude 17.9°S and longitude 106.1°E which put it about 565 miles (915 km) west-northwest of Exmouth, Australia. Neville was moving toward the west at 13 m.p.h. (21 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 982 mb.

Tropical Cyclone Neville rapidly intensified to the equivalent of a hurricane/typhoon over the South Indian Ocean on Wednesday. The inner end of a rainband wrapped around the center of Neville’s circulation and an eye was visible on satellite images. The eye was surrounded by a 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 Tropical Cyclone Neville. Storms near the center of Neville generated upper level divergence that pumped mass away from the tropical cyclone.

The circulation around Tropical Cyclone Neville was small. Winds to hurricane/typhoon force extended out 20 miles (30 km) from the center of Neville’s circulation. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.

Tropical Cyclone Neville will move through an environment favorable for intensification during the next 36 hours. Neville will move over water where the Sea Surface Temperatures are near 29°C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Cyclone Neville will intensify during the next 36 hours. Neville could intensify rapidly at times and it could strengthen to the equivalent of a major hurricane.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west during the next 24 hours. On its anticipated track, Tropical Cyclone Neville will move farther away from Australia. Neville could pass south of the Cocos Islands on Friday.

Tropical Cyclone Neville Develops Northwest of Australia

Tropical Cyclone Neville developed over the South Indian Ocean northwest of Australia on Wednesday. At 5:00 a.m. EDT on Wednesday the center of Tropical Cyclone Neville was located at latitude 17.7°S and longitude 109.2°E which put it about 430 miles (695 km) northwest of Exmouth, Australia. Neville was moving toward the west at 7 m.p.h. (11 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 998 mb.

A low pressure system over the South Indian Ocean northwest of Australia strengthened on Wednesday morning and the Australian Bureau of Meteorology designated the system as Tropical Cyclone Neville. The circulation around Tropical Cyclone Neville exhibited more organization on Wednesday. The inner end of a rainband wrapped most of the way around the center of Neville’s circulation. Bands of showers and thunderstorms were revolving around the center of circulation. Storms near the center of Neville generated upper level divergence that pumped mass away from the tropical cyclone. Winds to tropical storm force extended out 65 miles (105 km) from the center of Tropical Cyclone Neville.

Tropical Cyclone Neville will move through an environment favorable for intensification during the next 24 hours. Neville will move over water where the Sea Surface Temperatures are near 29°C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Cyclone Neville will intensify during the next 24 hours. Neville could intensify rapidly at times and it is likely to strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Neville will move around the northern side of a high pressure system over the South Indian Ocean. The high pressure system will steer Neville toward the west during the next 24 hours. On its anticipated track, Tropical Cyclone Neville will move farther away from Australia. Neville could pass south of the Cocos Islands in three days.

Tropical Cyclone Megan Makes Landfall in Northern Territory

Tropical Cyclone Megan made landfall in the Northern Territory of Australia on Monday morning. At 5:00 a.m. EDT on Monday the center of Tropical Cyclone Megan was located at latitude 16.52S and longitude 136.6°E which put it about 30 miles (50 km) south-southeast of Port McArthur, Australia. Megan was moving toward the southwest 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 977 mb.

A Warning was in effect for the portion of the coast from Port Roper to Mornington Island, Australia.

Tropical Cyclone Megan made landfall on the coast of the Northern Territory southeast of Port McArthur on Monday morning. A weather station in Borroloola, Australia reported a sustained wind speed of 37 m.p.h. (59 km/h) and a gust of 48 m.p.h. (78 km/h). The weather station in Borroloola also measured 12.12 inches (308.0 mm) of rain.

The core of Tropical Cyclone Megan also passed over the Pellew Islands before it made landfall in the Northern Territory. Centre Island reported a sustained wind speed of 82 m.p.h. (132 km/h) and a wind gust of 105 m.p.h. (170 km/h). The weather station on Centre Island also measured 14.99 inches (380.8 mm) of rain.

Tropical Cyclone Megan will move around the northern part of a high pressure system over Australia. The high pressure system will steer Megan toward the west-southwest during the next 24 hours. On its anticipated track, the center of Tropical Cyclone Megan will pass southeast of Borroloola. The center of Megan will pass between the McArthur River Mine and Robinson River.

Tropical Cyclone Megan will weaken gradually as it moves farther inland over the Northern Territory. Megan will bring strong winds and locally heavy rain to southeastern part of the Northern Territory. Heavy rain could cause floods in some locations. A Flood Watch was in effect for some of the inland parts of the Northern Territory and the Carpentaria Coastal Rivers.

Elsewhere, a Tropical Low weakened over the South Indian Ocean northwest of Australia. At 5:00 a.m. EDT on Monday the center of the Tropical Low was located at latitude 17.0°S and longitude 112.1°E which put it about 385 miles (625 km) north-northwest of Exmouth. Australia. The Tropical Low was moving toward the west at 4 m.p.h. (6 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 997 mb.

Tropical Cyclone Megan Brings Wind and Rain to Pellew Islands

Tropical Cyclone Megan brought wind and rain to the Pellew Islands on Sunday. At 5:00 p.m. EDT on Sunday the center of Tropical Cyclone Megan was located at latitude 15.5°S and longitude 137.1°E which put it about 85 miles (135 km) northeast of Borroloola, Australia. Megan was moving toward the south-southwest at 6 m.p.h. (10 km/h). The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h). The minimum surface pressure was 961 mb.

A Warning was in effect for the portion of the coast from Alyangula to Mornington Island, Australia.

Tropical Cyclone Megan brought strong winds and heavy rain to the Pellew Islands on Sunday. An automated weather station on Centre Island reported a sustained wind speed of 54 m.p.h. (87 km/h) and a wind gust of 73 m.p.h. (117 km/h). The weather station measured 6.67 inches (169.4 mm) of rain and it was still raining at the time of the latest observation.

Tropical Cyclone Megan continued to intensify on Sunday. A small circular eye was present at the center of Megan’s circulation. A ring of thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Megan. Storms near the center of Megan’s circulation generated upper level divergence that pumped mass away from the tropical cyclone.

The circulation around Tropical Cyclone Megan was symmetrical. Winds to hurricane/typhoon force extended out 40 miles (65 km) from the center of Megan. Winds to tropical storm force extended out 90 miles (145 km) from the center of circulation. The Hurricane Intensity Index (HII) for Tropical Cyclone Megan was 17.8. The Hurricane Size Index (HSI) was 12.6 and the Hurricane Wind Intensity Size Index (HWISI) was 30.4. Tropical Cyclone Megan was similar in size and intensity to Hurricane Sally when Sally hit South Alabama in 2020.

Tropical Cyclone Megan will move through an environment favorable for intensification during the next 12 hours. Megan will move over water where the Sea Surface Temperatures are near 30°C. It will move under the axis of an upper level ridge over the Gulf of Carpentaria. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Although more and more of the western side of Tropical Cyclone Megan will move over land, Megan could intensify during the next 12 hours.

Tropical Cyclone Megan will move around the northern part of a high pressure system over Australia. The high pressure system will steer Megan toward the southwest during the next 24 hours. On its anticipated track, the center of Tropical Cyclone Megan will make landfall on the coast of the Northern Territory southeast of Port McArthur in 12 hours.

Tropical Cyclone Megan will continue to produce strong winds and heavy rain in the Pellew Islands. Megan will also bring strong winds and locally heavy rain to the portion of the coast from Alyangula to Mornington Island. The part of the coast southeast of Port McArthur is likely to experience sustained winds to hurricane/typhoon force. Heavy rain will cause floods in some locations. A Flood Watch is in effect for parts of the Top End and Barkly in the Northern Territory. Tropical Cyclone Megan could also cause a storm surge of up to 10 feet (3 meters) along the coast.

Elsewhere, a Tropical Low continued to churn over the South Indian Ocean northwest of Australia. At 5:00 p.m. EDT on Sunday the center of the Tropical Low was located at latitude 17.5°S and longitude 112.7°E which put it about 350 miles (565 km) north of Exmouth. Australia. The Tropical Low was moving toward the south-southwest at 3 m.p.h. (5 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.

Tropical Cyclone Megan Intensifies to Equivalent of Hurricane/Typhoon

Tropical Cyclone Megan intensified to the equivalent of a hurricane/typhoon over the Gulf of Carpentaria on Saturday. At 5:00 p.m. EDT on Saturday the center of Tropical Cyclone Megan was located at latitude 14.5°S and longitude 137.5°E which put it about 160 miles (260 km) north-northeast of Borroloola, Australia. Megan was moving toward the southwest at 2 m.p.h. (3 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 980 mb.

A Warning was in effect for the portion of the coast from Alyangula to Mornington Island, Australia. A Watch was in effect for Mornington Island.

Tropical Cyclone Megan intensified rapidly on Saturday. The inner end of a rainband wrapped around the center of Megan’s circulation. A small circular eye formed at the center of Tropical Cyclone Megan. A ring of thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the center of circulation. Storms near the center of Megan’s circulation generated upper level divergence that pumped mass away from the tropical cyclone. The removal of mass caused the surface pressure to decrease. Winds to hurricane/typhoon force extended out 40 miles (65 km) from the center of Tropical Cyclone Megan. Winds to tropical storm force extended out 120 miles (195 km) from the center of Megan.

Tropical Cyclone Megan will move through and environment favorable for intensification during the next 24 hours. Megan will move over water where the Sea Surface Temperatures are near 30°C. It will move under the axis of an upper level ridge over the Gulf of Carpentaria. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Tropical Cyclone Megan will intensify during the next 24 hours. Megan could intensify rapidly at times. Tropical Cyclone Megan could strengthen to the equivalent of a major hurricane.

Tropical Cyclone Megan will move around the northern part of a high pressure system over Australia. The high pressure system will steer Megan toward the south-southwest during the next 24 hours. On its anticipated track, Tropical Cyclone Megan will approach the coast of the Northern Territory near Port McArthur in 24 hours.

Tropical Cyclone Megan will bring strong winds and locally heavy rain to the portion of the coast from Alyangula to Mornington Island. The part of the coast near Port McArthur is likely to experience winds to hurricane/typhoon force. Heavy rain was already falling on parts of Groote Eylandt. Heavy rain will cause floods in some locations, A Flood Watch is in effect for parts of the Top End and Barkly in the Northern Territory. Tropical Cyclone Megan could also cause a storm surge of up to 10 feet (3 meters along the coast.

Elsewhere, a Tropical Low continued to spin over the South Indian Ocean northwest of Australia. At 5:00 p.m. EDT on Saturday the center of the Tropical Low was located at latitude 16.7°S and longitude 113.7°E which put it about 385 miles (625 km) north of Exmouth, Australia. The Tropical Low was moving toward the west at 4 m.p.h. (6 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 Cyclone Megan Develops Over Gulf of Carpentaria

Tropical Cyclone Megan developed over the Gulf of Carpentaria early on Saturday. At 5:00 a.m. EDT on Saturday the center of Tropical Cyclone Megan was located at latitude 14.6°S and longitude 137.6°E which put it about 160 miles (260 km) north-northeast of Borroloola, Australia. Megan was moving toward the south-southwest at 7 m.p.h. (11 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 987 mb.

A Warning was in effect for the portion of the coast from Alyangula to Mornington Island, Australia. A Watch was in effect for Mornington Island.

A low pressure system over the Gulf of Carpentaria strengthened early on Saturday and the Australian Bureau of Meteorology designated the system as Tropical Cyclone Megan. The circulation around Tropical Cyclone Megan was well organized. The inner end of a rainband wrapped around the center of Megan’s circulation. An eye appeared to be forming at the center of circulation. Bands of showers and thunderstorms were revolving around the center of Tropical Cyclone Megan. Storms near the center of Megan generated upper level divergence that pumped mass away from the tropical cyclone. Winds to tropical storm force extended out 140 miles (220 km) from the center of Tropical Cyclone Megan.

Tropical Cyclone Megan will move through and environment favorable for intensification during the next 24 hours. Megan will move over water where the Sea Surface Temperatures are near 30°C. It will move under the axis of an upper level ridge over the Gulf of Carpentaria. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Tropical Cyclone Megan will intensify during the next 24 hours. Megan is likely to strengthen to the equivalent of a hurricane/typhoon. Tropical Cyclone Megan could intensify rapidly at times.

Tropical Cyclone Megan will move around the northern part of a high pressure system over Australia. The high pressure system will steer Megan toward the south-southwest during the next 24 hours. On its anticipated track, Tropical Cyclone Megan will approach the coast of the Northern Territory near Port McArthur in 24 hours.

Tropical Cyclone Megan will bring strong winds and locally heavy rain to the portion of the coast from Alyangula to Mornington Island. The part of the coast near Port McArthur is likely to experience winds to hurricane/typhoon force. Heavy rain was already falling on parts of Groote Eylandt. Heavy rain will cause floods in some locations, A Flood Watch is in effect for parts of the Top End and Barkly in the Northern Territory. Tropical Cyclone Megan could also cause a storm surge of up to 10 feet (3 meters along the coast.

Elsewhere, a Tropical Low was spinning over the South Indian Ocean northwest of Australia. At 5:00 a.m. EDT on Saturday the center of the Tropical Low was located at latitude 17.3°S and longitude 114.0°E which put it about 345 miles (555 km) north of Exmouth, Australia. The Tropical Low was moving toward the west at 4 m.p.h. (6 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.