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Tropical Cyclone 24P Forms over the Coral Sea

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Tropical Cyclone 24P formed over the Coral Sea on Tuesday night.  At 10:00 p.m. EST on Tuesday the center of Tropical Cyclone 24P was located at latitude 14.3°S and longitude 150.6°E which put the center about 380 miles (615 km) east-northeast of Cairns, Australia.  Tropical Cyclone 24P was moving toward the south-southeast 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 996 mb.

The Australian Bureau of Meteorology issued a Watch for the portion of the coast from Cooktown to Lucinda.  The Watch included Port Douglas, Cairns, Innisfail and Palm Island.

A low pressure system over the Coral Sea strengthened on Tuesday night and the U.S. Joint Typhoon Warning Center designated the system as Tropical Cyclone 24P.  The Australian Bureau of Meteorology was designating the system as Tropical Low 29U.

The distribution of thunderstorms in Tropical Cyclone 24P was asymmetrical.  Thunderstorms were occurring in bands in the western half of the tropical cyclone’s circulation.  Bands in the eastern side of the circulation consisted primarily of showers and lower clouds.  Storms near the center of Tropical Cyclone 24P began to generate upper level divergence that pumped mass away to the west of the tropical cyclone.

Winds to tropical storm force extended out 100 miles (160 km) from the center of Tropical Cyclone 24P.

Tropical Cyclone 24P will move through an environment that will be somewhat favorable for intensification during the next 24 hours.  The tropical cyclone will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the northern part of an upper level ridge that extended from the Coral Sea to over Australia.  The upper level ridge will produce easterly winds that will blow toward the top of the tropical cyclone’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Cyclone 24P will intensify during the next 24 hours.

Tropical Cyclone 24 P will move around the northwestern part of a high pressure system that is over the Coral Sea.  The high pressure system will steer the tropical cyclone during the next 24 hours.  On its anticipated track, Tropical Cyclone 24P will approach the coast of Queensland near Cairns in two days.

Tropical Cyclone 24P will bring strong winds and locally heavy rain to the coast of Queensland near Cairns.  Heavy rain could cause flooding in some locations.

Flood Watches are in effect for the parts of the Cape York Peninsula, the Central Coast, Capricornia, and Carpentaria catchments.

Tropical Cyclone Koji Nears Queensland

Tropical Cyclone Koji was nearing the coast of Queensland on Saturday morning.  At 7:00 a.m. EST on Saturday the center of the Tropical Cyclone Koji was located at latitude 17.9°S and longitude 147.9°E which put the center about 115 miles (185 km) northeast of Townsville, Australia.  Kohi was moving toward the south 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 988 mb.

The Australian Bureau of Meteorology issued a Warning that was in effect for the portion of the coast of Queensland from Lucinda to Mackay.  The Warning included Townsville, Palm Island, Bowen, Proserpine, and the Whitsunday Islands.

Tropical Cyclone Koji was strengthening as it neared the coast of Queensland on Saturday morning.  More thunderstorms formed near the center of Koji’s circulation.  More thunderstorms also developed in bands revolving around the center of Tropical Cyclone Koji.  Storms near the center generated upper level divergence that pumped mass away from the tropical cyclone.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Cyclone Koji was very large.  Winds to tropical storm force extended out 220 miles (350 km) from the center of Koji’s circulation.

Tropical Cyclone Koji will move through an environment favorable for intensification during the next 12 hours.  Koji will move over water where the Sea Surface Temperatures are near 28°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Cyclone Koji is likely to intensify during the next 12 hours.  Koji could strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Koji will move around the western side of a high pressure system that is east of Australia.  The high pressure system will steer the Koji toward the south-southwest during the next 24 hours.  On its anticipated track, the  center of Tropical Cyclone Koji will reach the coast of Queensland near Ayr in 12 hours.

Tropical Cyclone Koji will bring strong winds and locally heavy rain to the portion of the coast between Lucinda and Mackay.  Heavy rain could cause floods in some locations.

Major Flood Warnings are in effect for the Herbert River, the Pioneer River, the Flinders River, the Concurry Rivers, and the Haughton River Catchment.  Moderate Flood Warnings are in effect for the Bohle River, the Don River, the Norman River, the Thompson River, and the Tully River.  Flood Warnings are in effect for the Gilbert River, the Black River and Bluewater Creek.  Flood Watches are in effect for the Coastal Rivers between Cooktown and Rockhampton, and for the Cape York Peninsula.

Tropical Cyclone Koji could also cause a storm surge of up to 7 feet (2 meters) along the coast of Queensland.

Tropical Cyclone Kirrily Brings Wind and Rain to Queensland

Tropical Cyclone Kirrily brought wind and rain to northern Queensland on Thursday. At 10:00 a.m. EST on Thursday the center of Tropical Cyclone Kirrily was located at latitude 19.6°S and longitude 145.6°E which put it about 70 miles (110 km) west of Townsville, Australia. Kirrily was moving toward the west-southwest at 22 m.p.h. (35 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 993 mb.

A Warning was in effect for the portion of the coast from Innisfail to Ayr. The Warning included Townsville.

The center of Tropical Cyclone Kirrily made landfall on the coast of Queensland just to the north of Townsville on Thursday. Kirrily strengthened up until it made landfall. Tropical Cyclone Kirrily was almost the equivalent of a hurricane/typhoon at the time of landfall. The inner end of a rainband wrapped around the center of Kirrily’s circulation and an eye was starting to form just before landfall occurred. Winds to tropical storm force extended out 200 miles (320 km) from the center of Tropical Cyclone Kirrily at the time of landfall.

A weather station at Townsville reported a sustained wind speed of 38 m.p.h. (61 km/h) and a wind gust of 58 m.p.h. (93 km/h). The weather station reported 0.97 inches (24.6 mm) of rain. A weather station at Lucinda reported a sustained wind speed of 51 m.p.h. (82 km/h) and a wind gust of 62 m.p.h. (100 km/h). A weather station at Alva Beach reported a sustained wind speed of 49 m.p.h. (80 km/h) and a wind gust of 67 m.p.h. (108 km/h). That weather station also reported 1.13 inches (28.8 mm) of rain.

Tropical Cyclone Kirrily will move around the northwestern part of a high pressure system over the Coral Sea. The high pressure system will steer Kirrily toward the west-southwest during the next 24 hours. On its anticipated track, Tropical Cyclone Kirrily will continue to move inland over northern Queensland. Kirrily will weaken gradually as it moves farther inland. Kirrily will bring gusty winds and locally heavy rain to northern Queensland. Heavy rain could cause floods in some locations. A Flood Watch was in effect for the region between Tully and Airlie Beach.

Tropical Cyclone Jasper Strengthens Again

Tropical Cyclone Jasper strengthened again on Monday as it approached the coast of Queensland. At 10:00 p.m. EST on Monday the center of Tropical Cyclone Jasper was located at latitude 16.3°S and longitude 147.6°E which put it about 145 miles (235 km) east-northeast of Cairns, Australia. Jasper was moving toward the west-northwest at 7 m.p.h. (11 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 986 mb.

A Tropical Cyclone Warning was in effect for the portion of the coast from Cape Flattery to Lucinda, Australia. The Tropical Cyclone Warning included Cairns, Cooktown, Innisfail and Chillagoe. A Tropical Cyclone Watch was in effect for the portion of the coast from Cape Melville to Cape Flattery, Australia. The Tropical Cyclone Watch included Palmerville.

Tropical Cyclone Jasper strengthened again on Monday. New thunderstorms developed in bands revolving around the center of Jasper’s circulation. The inner end of a rainband wrapped around the eastern and southern sides of the center of circulation. Storms near the center of Jasper generated upper level divergence that pumped mass away from the tropical cyclone. Winds to tropical storm force extended out 120 miles (195 km) from the center of Tropical Cyclone Jasper.

Tropical Cyclone Jasper will move through an environment somewhat favorable for intensification during the next 24 hours. Jasper 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. However, Jasper will still be in a region of drier air. The drier air will inhibit the formation of new thunderstorms. Tropical Cyclone Jasper is likely to intensify in spite of the drier air during the next 24 hours. Jasper could strengthen to the equivalent of a hurricane/typhoon.

Tropical Cyclone Jasper will move around the northern part of a high pressure system over eastern Australia and the Coral Sea. The high pressure system will steer Jasper toward the west during the next 24 hours. On its anticipated track, the center of Tropical Cyclone Jasper will reach the coast of Queensland between Cairns and Cooktown in 24 hours. Jasper could be the equivalent of a hurricane/typhoon when it reaches the coast.

Tropical Cyclone Jasper will bring strong winds and locally heavy rain to the coast of Queensland between Cairns and Cooktown. Heavy rain could cause flash floods in some locations. A Flood Watch is in effect for the North Tropical Coast, parts of the Cape York Peninsula and Gulf Country. Tropical Cyclone Jasper could cause a storm surge of up to seven feet (two meters) along the coast.