Tag Archives: Groote Eylandt

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 Tiffany Strengthens over Gulf of Carpentaria

Tropical Cyclone Tiffany strengthened over the Gulf of Carpentaria on Tuesday morning. At 10:00 a.m. EST on Tuesday the center of Tropical Cyclone Tiffany was located at latitude 15.2°S and longitude 137.4°E which put it about 100 miles (160 km) southeast of Groote Eylandt, Australia. Tiffany was moving toward the west at 16 m.p.h. (26 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 991 mb.

A Warning was in effect for the portion of the coast of the Northern Territory from Nhulunbuy to the border with Queensland. The Warning included Groote Eylandt, Port Roper and Port McArthur.

Tropical Cyclone Tiffany exhibited greater organization as it strengthened on Tuesday morning. The inner end of a rainband wrapped around the northern side of the center of circulation and a partial eyewall appeared to be developing. Bands of showers and thunderstorms were revolving around the center of Tiffany’s circulation. Storms near the center generated upper level divergence that pumped mass away to the west of the tropical cyclone. Winds to tropical storm force extended out 60 miles (95 km) from the center of Tiffany.

Tropical Cyclone Tiffany will move through an environment favorable for intensification during the next 12 hours. Tiffany will move over water where the Sea Surface Temperatures are near 31˚C. It will move under the northern part of an upper level ridge over eastern Australia. The ridge will produce easterly winds that will blow toward the top of Tiffany’s circulation. Those winds will cause some vertical wind shear and the wind shear will inhibit intensification. However, Tropical Cyclone Tiffany will intensify over the warm water in the Gulf of Carpentaria during the next 12 hours.

Tropical Cyclone Tiffany will move around the northern side of a high pressure system over Australia during the next 24 hours. The high pressure system will steer Tiffany toward west. On its anticipated track the center of Tropical Cyclone Tiffany will pass south of Groote Eylandt during the next few hours. Tiffany will make landfall on the coast of the Northern Territory near Port Roper in about 12 hours. Tropical Cyclone Tiffany will bring gusty winds and locally heavy rain to the eastern part of the Northern Territory. Heavy rain could cause flash floods in some locations. Flood Watches have been issued for rivers in the eastern part of the Northern Territory.

Elsewhere over the South Pacific Ocean, Tropical Cyclone Cody was continued to churn southwest of Fiji. At 10:00 a.m. EST on Tuesday the center of Tropical Cyclone Cody was located at latitude 21.5°S and longitude 173.5°E which put it about 390 miles (625 km) southwest of Suva, Fiji. Cody was moving toward the south-southeast 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 991 mb.

Tropical Cyclone Tiffany Brings Wind and Rain to Northern Queensland

Tropical Cyclone Tiffany brought wind and rain to northern Queensland on Sunday night. At 10:00 p.m. EST on Sunday the center of Tropical Cyclone Tiffany was located at latitude 14.3°S and longitude 144.0°E which put it about 70 miles (110 km) east-southeast of Coen, Australia. Tiffany was moving toward the west-southwest at 8 m.p.h. (13 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.

Warnings were in effect for the east coast of the Cape York Peninsula from Lockhart River to Cape Flattery and for the west coast of the Cape York Peninsula from Weipa to Kowanyama. A Watch was issued for the west coast of the Gulf of Carpentaria from Nhulunbuy to the border between the Northern Territory and Queensland. The Watch included Groote Eylandt.

The center of Tropical Cyclone Tiffany made landfall on the east coast of Queensland east-southeast of Coen on Sunday night. Tiffany was the equivalent of a strong tropical storm at the time of landfall. Bands of showers and thunderstorms in the western half of Tiffany’s circulation brought gusty winds to northern Queensland. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation. Tropical Cyclone Tiffany was also dropping locally heavy rain over parts of northern Queensland. A Minor Flood Warning was issued for the Daintree River and a Flood Warning was issued for the Mossman River.

Tropical Cyclone Tiffany will move around the northern side of a high pressure system over Australia. The high pressure system will steer Tiffany toward the west during the next several days. On its anticipated track Tropical Cyclone Tiffany will move across the Cape York Peninsula during the next 18 hours. Tiffany will weaken while it moves over land. In 18 hours the center of Tropical Cyclone Tiffany will move over the Gulf of Carpentaria. The Sea Surface Temperatures are near 31˚C in the Gulf of Carpentaria. So, Tiffany could strengthen when it moves back over water. An upper level ridge over Australia will produce easterly winds that will blow toward the top of Tiffany’s circulation. Those winds will cause vertical wind shear and they will inhibit intensification, but Tropical Cyclone Tiffany is forecast to intensify after it moves over the Gulf of Carpentaria.

Elsewhere over the South Pacific Ocean, Tropical Cyclone Cody was located southwest of Fiji. At 10:00 p.m. EST on Sunday the center of Tropical Cyclone 05P was located at latitude 20.1°S and longitude 176.1°E which put it about 150 miles (240 km) west-southwest of Tavuki, Fiji. Cody was moving toward the west-southwest at 5 m.p.h. (8 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 994 mb.

Tropical Cyclone Owen Redevelops Over Gulf of Carpentaria

After meandering westward over the Coral Sea last week and crossing northern Queensland, Tropical Cyclone Owen redeveloped over the Gulf of Carpentaria on Tuesday.  At 10:00 a.m. EST on Tuesday the center of Tropical Cyclone Owen was located at latitude 14.9°S and longitude 138.4°E which put it about 135 miles (215 km) north-northwest of Mornington Island, Australia.  Owen was moving toward the west-northwest 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 993 mb.

The circulation around Tropical Cyclone Owen exhibited increased organization after it moved over the Gulf of Carpentaria and the Australian Bureau of Meteorology reclassified the system as a tropical cyclone on Tuesday.  A band of showers and thunderstorms was wrapping around the southern and western sides of the center of circulation and the strongest winds were occurring in that band of storms.  Other bands of showers and thunderstorms were strengthening over the Gulf of Carpentaria.  Storms near the center of circulation started to generate upper level divergence which was pumping mass away from the tropical cyclone.

A Tropical Cyclone Warning is in effect for the portion of the coast from Cape Shield, Northern Territory to Burketown, Queensland including Groote Eylandt and Mornington Island.

Tropical Cyclone Owen will move through an environment favorable for intensification during the next several days.  Owen will move over water where the Sea Surface Temperature is near 30°C.  It will move in an area between an upper level ridge north of Australia and a larger upper level ridge over the South Pacific Ocean where the upper level winds are weaker.  There will be some vertical wind shear, but the wind shear will not be strong enough to prevent intensification.  Tropical Cyclone Owen will intensify during the next two days and it could strengthen into the equivalent of a hurricane/typhoon.

The ridge north of Australia will steer Tropical Cyclone Owen toward the west-northwest during the next 24 hours.  On its anticipated track Tropical Cyclone Owen could be near Groote Eylandt in about 24 hours.  An upper level trough over Western Australia will move eastward and the trough will cause the winds in the steering levels to weaken in a day or so.  Owen could drift slowly southward for 12 to 24 hours when that happens.  Eventually, westerly winds blowing around the northern end of the trough are forecast to turn Tropical Cyclone Owen back toward the east.

Tropical Cyclone Owen could bring gusty winds and drop locally heavy rain over Groote Eylandt when it passes nearby.  If Owen drifts southward as expected, it could also bring gusty winds and heavy rain to the western coast of the Gulf of Carpentaria near Port McArthur.