Tag Archives: Uesi

Tropical Cyclone Uesi Weakens East of Australia

Tropical Cyclone Uesi weakened east of Australia on Wednesday.  At 1:00 p.m. EST on Wednesday the center of Tropical Cyclone Uesi was located at latitude 25.9°S and longitude 161.7°E which put it about 500 miles (805 km) east-northeast of Brisbane, Australia.  Uesi was moving toward the south-southwest at 13 m.p.h. (20 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 977 mb.

Tropical Cyclone Uesi weakened steadily on Wednesday as it moved into a more unfavorable environment.  An upper level low over eastern Australia and an upper level ridge over the South Pacific Ocean interacted to produce strong northerly winds which blew across the top of Uesi.  Those winds caused strong vertical wind shear and they pushed the upper part of the circulation to the south of the lower level circulation.  Thunderstorms were only occurring in bands south of the center of Tropical Cyclone Uesi.  Bands in other parts of the tropical cyclone consisted primarily of showers and lower clouds.

Tropical Cyclone Uesi will continue to weaken as it moves into an even more unfavorable environment.  The upper low over eastern Australia and the upper ridge over the South Pacific will steer Uesi toward the south.  Tropical Cyclone Uesi will move over colder water.  The trough and the ridge will also continue to cause strong vertical wind shear.  The combined effects of colder water and strong wind shear will cause Tropical Cyclone Uesi to weaken during the next several days.

Tropical Cyclone Uesi Strengthens to Equivalent of Hurricane/Typhoon

Tropical Cyclone Uesi strengthened to the equivalent of a hurricane/typhoon over the Coral Sea northwest of New Caledonia on Monday. At 4:00 p.m. EST on Monday the center of Tropical Cyclone Uesi was located at latitude 18.4°S and longitude 162.5°E which put it about 125 miles (200 km) northwest of Poum, New Caledonia.  Uesi was moving toward the south at 6 m.p.h. (10 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 976 mb.

Tropical Cyclone Uesi exhibited evidence of being the equivalent of a hurricane/typhoon on Monday.  Microwave satellite imagery showed indications of the development of an eye in the lower and middle levels of Uesi.  The tops of tall thunderstorms around the center of circulation obscured the developing eye on conventional visible and infrared satellite images.  A ring of strong thunderstorms around the center of Tropical Cyclone Uesi was producing the strongest wind speeds.  Bands of showers and thunderstorms were revolving around the core of Uesi.  The strongest rainbands were in the southern half of the circulation.  Bands in the northern half of the circulation consisted primarily of showers and lower clouds.  Winds to hurricane/typhoon force extended out 40 miles (65 km) from the center of circulation.  Winds to tropical storm force extended out 160 miles (260 km) from the center in the southern half of the circulation and out 100 miles (160 km) in the northern half.

Tropical Cyclone Uesi will move through an environment favorable for intensification during the next 24 to 36 hours.  Uesi will move over water where the Sea Surface Temperature is near 29°C.  It will move under the western end of an upper level ridge over the South Pacific Ocean.  The ridge will produce northerly winds which will blow toward the top of the circulation.  Those winds will cause some vertical wind shear, but the shear will not be great enough to prevent further intensification.  Tropical Cyclone Uesi will likely continue to strengthen during the next 24 to 36 hours.

Tropical Cyclone Uesi will move around the western end of a high pressure system over the South Pacific Ocean during the next several days.  The high pressure system will steer Uesi toward the south.  On its anticipated track the core of Tropical Cyclone Uesi will pass near and just to the west of northern New Caledonia during the next 24 to 36 hours.  Rainbands on the eastern side of Uesi could bring gusty winds and locally heavy rain to parts of New Caledonia.

Tropical Cyclone Uesi Develops Rapidly over Coral Sea

Tropical Cyclone Uesi developed rapidly over the Coral Sea on Sunday.  At 4:00 p.m. EST on Sunday the center of Tropical Cyclone Uesi was located at latitude 16.6°S and longitude 163.6°E which put it about 230 miles (370 km) north of New Caledonia. Ueusi was moving toward the south 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 982 mb.

The circulation around Tropical Cyclone Uesi organized quickly on Sunday.  The inner end of a band of showers and thunderstorms wrapped around the western side of the center of circulation.  More thunderstorms formed in other rainbands.  The strongest bands were in the eastern and southern parts of the circulation.  Storms near the center of circulation generated upper level divergence which pumped mass away from the tropical cyclone.  Winds to tropical storm force extended out 100 miles (160 km) from the center.

Tropical Cyclone Uesi will move through an environment favorable for intensification during the next 48 hours.  Uesi will move over water where the Sea Surface Temperature is near 30°C.  It will move under the western end of an upper level ridge over the South Pacific Ocean.  The ridge will produce northerly winds which will blow toward the top of the circulation.  Those winds will cause some vertical wind shear, but the shear will mot be strong enough to prevent intensification.  Tropical Cyclone Uesi is likely to strengthen into the equivalent of a hurricane/typhoon during the next 12 to 24 hours.

Tropical Cyclone Uesi will move around the western end of a high pressure system over the South Pacific Ocean.  The high will steer Uesi toward the south during the next several days.  On its anticipated track the center of Tropical Cyclone Uesi could approach the northern end of New Caledonia in about 48 hours.  Uesi will likely be the equivalent of a hurricane/typhoon when it nears New Caledonia.