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Tropical Cyclone Edzani (07S) Expected to Track Southwestward

24.7S 71.7E

January 11th, 2010 Category: Tropical Storms

Tropical Cyclone Edzani (07S) - January 8th, 2010

Tropical Cyclone Edzani (07S) - January 8th, 2010

Track of TC 07S - January 11th, 2010 © Univ. of Wisconsin

Track of TC 07S

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Tropical Cyclone Edzani (07S), located approximately 900 nautical miles east-southeast of La Reunion, has tracked south-southeastward at 13 knots over the past six hours. Maximum significant wave height is 24 feet.

Animated infrared satellite imagery shows the convection has been slowly decreasing over the low level circulation center (LLCC) over the past 12 hours. An upper level mid-latitude trough is currently impinging the outflow along the western half of the system, and has caused convection on the northwestern quadrant to dissipate.

Sea surface temperatures (SST) continue to drop as TC 07S tracks more southward. The track has shifted over the last 6 hours to the south-southeast as the subtropical ridge (STR) to the east has weakened due to the eastward passage of a mid-latitude trough to the South. In the next 24 hours the track is expected to shift back to the Southwest as the STR re-develops to the South of Edzani.

This will persist through TAU 48 when another transitory mid-latitude trough is expected to track to the South of 07S and capture the weakening LLCC. Further interaction with the mid-latitude trough, decreasing SST values of the system, and stifled upper level support will lead to extratropical transition (ET) between TAU 48 and 72, with the completion of the ET process by TAU 96.

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