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Tropical Cyclone Evan (04P) Roars Over Fiji

17.7S 177.4E

December 20th, 2012 Category: Tropical Cyclones

Tropical Cyclone Evan (TC 04P) – December 19th, 2012

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Track of Tropical Cyclone Evan (TC 04P) - December 19th, 2012 © Univ. of Wisconsin

Track of TC 04P

On December 17, Tropical Cyclone Evan (04P) roared over Fiji as a Category 4 storm, with winds reaching up to 230 km/h (145 mph).

The system is now located approximately 400 nm south of Nadi, Fiji, and has tracked south-southeastward at 04 knots over the past six hours. Maximum significant wave height is 20 feet.

Animated infrared satellite imagery shows the low level circulation center continues to elongate and lack deep convection, and has started extra-tropical transition (ETT). Evan will continue to move south into an increasingly hostile upper-level environment and decreasing sea surface temperatures as it dissipates under warning strength in the next 12 hours and continues ETT.

Tropical Storm Daphne (18P) Located West-Southwest of Fiji

28.6S 178.6W

April 3rd, 2012 Category: Tropical Storms

Tropical Storm Daphne (18P) - April 2nd, 2012

Tropical Storm Daphne (18P) - April 2nd, 2012

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Track of Tropical Storm Daphne (18P) - April 2nd, 2012 © Univ. of Wisconsin

Track of TS 18P

On April 2 at 0300 UTC (April 1, 11 p.m. EDT), Tropical Storm Daphne had maximum sustained winds near 35 knots (40 mph/64 kph). Those tropical-storm-force winds extend as far as 200 nautical miles (230 miles/370 km) from the center, making Daphne a good-sized storm, more than 400 nautical miles (460 miles/741 km) in diameter.

Daphne’s center was located about 340 nautical miles (391 miles/630 km) west-southwest of Suva, Fiji, near 19.8 South and 172.7 East. Daphne was moving to the east-southeast near 18 knots (20.7 mph/ 33.3 kph). Forecasters expect Daphne to continue moving to the east-southeast and maintain strength over the next day or two.

Rufiji River Crossing Tanzania

7.9S 38.7E

December 9th, 2011 Category: Rivers

Tanzania - November 14th, 2011

This APM image shows the Rufiji River flowing across Tanzania. The river is formed by the convergence of the Kilombero and Luwegu rivers. Its principal tributary is the Great Ruaha River. Here, two reservoirs can be observed near the river.

The Rufiji is approximately 600 km (375 mi) long, all of which is located in Tanzania. Its source is in southwestern Tanzania and its mouth on the Indian Ocean at a point between Mafia Island called Mafia Channel.

Tropical Cyclone René (15P) Situated South-Southeast of Fiji

28.4S 176.4W

February 17th, 2010 Category: Tropical Storms

Tropical Cyclone René (15P) - February 15th, 2010

Tropical Cyclone René (15P) - February 15th, 2010

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Track of TC 15P - February 16th, 2010 © Univ. of Wisconsin

Track of TC 15P

Tropical Cyclone René (15P), located approximately 440 nautical miles south-southeast of Nadi, Fiji, has tracked west-southwestward at 16 knots over the past six hours. Maximum significant wave height is 24 feet.

Animated multispectral satellite imagery shows a fully exposed low level circulation center (LLCC) with deep convection sheared to the south of the storm. Though Dvorak estimates indicate the system may only be
35 knots, the current intensity of 45 knots is based the principle that the system will wind down slower than the convection dissipates.

TC René is now tracking over unfavorably cool waters while an upper-level low to the northwest is suppressing convection. TC 15P will continue to track generally southwestward as it approaches the axis of the subtropical steering ridge over the next 24 to 36 hours. At the same time, René will gradually dissipate as a significant tropical cyclone due to hostile vertical wind shear and cold sea surface temperatures.

The Islands of Viti Levu and Ovalau, Fiji – December 29th, 2009

18.1S 178.4E

December 29th, 2009 Category: Image of the day, Rivers

Fiji - December 19th, 2009

Fiji - December 19th, 2009

This orthorectified image focuses on the island of Viti Levu, the largest island in the Republic of Fiji. Viti Levu is the site of the nation’s capital, Suva, visible on a peninsula near the Rewa River.

The island is home to 70% of the population (about 600,000) and is the hub of the entire Fijian archipelago. It measures 146 kilometers long and 106 kilometers wide and has an area of 10,389 square kilometers.

Geologists believe that Viti Levu has been submerged a number of times, and has been covered by lava and other volcanic materials. Earthquakes and volcanic eruptions account for the somewhat rugged terrain of the island, which is divided into roughly equal halves by a north-south mountain range. The centre of the island includes the nation’s highest peak Mount Tomanivi (otherwise Mt. Victoria) rising to 1,324 meters.

Several other islands can be seen near Viti Levu, the largest of which is Ovalau, the sixth largest island in Fiji’s Lomaiviti archipelago. Situated 60 km north east from the national capital Suva and 20 km off the east coast of Viti Levu, the island is about 13 kilometers long and 10 kilometers wide. It covers a total area of 102.3 square kilometers and has a population of around 9,000, approximately half the Lomaiviti population.

Ovalau is characterized by its rugged topography, with little flat land apart from the Lovoni Valley in the centre of the island. The island is an eroded volcanic crater with a narrow belt of flat to udulating country between the encircling lagoon and the steep crater sides. The highest peaks are Nadelaiovalau, with an altitude of 625 meters, in the east, and Tomuna, 526 meters, in the south.