Tag Archives: Cape Flattery

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.