PDC Weather Wall

December 2012
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Tropical Cyclone Activity Report – Pacific / Indian Oceans

Tropical cyclone 27W (Wukong) is dissipating over the South China Sea…located approximately 230 NM southeast of Ho Chi Minh City, Vietnam (Dissipating tropical depression…sustained winds of 25 knots, with gusts to near 35 knots) – Final Warning

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, dissipating tropical cyclone 27W, with JTWC positions, segments, error cones, winds...over the South China Sea

Tropical cyclone 27W (Wukong) is dissipating now, and the Joint Typhoon Warning Center (JTWC) has issued its last warning on this system. Unfavorable environmental conditions exist, including moderate vertical wind shear, and a cold NE surface wind flowing along the coast of southeast Asia. These conditions are bringing Wukong down, and complete dissipation is expected over the next 12-24 hours. // The JTWC had given its last warning on this system yesterday at this time, although decided to keep it going for another 24 hours.

Tropical cyclone 05P is now active over the southwest Pacific Ocean…located approximately 75 NM south-southeast of Honiara, Soloman Islands (Strengthening tropical cyclone…sustained winds of 35 knots, with gusts to near 45 knots)

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, newly formed tropical cyclone 05P, with JTWC positions, segments, error cones, winds...over the southwest Pacific

Tropical cyclone 05P has spun up in the southwest Pacific, and is located about 75 miles south-southeast of the Soloman Islands. It has been tracking west-southwest over the past six hours. A general poleward (Antarctica) motion will continue, as 05P strengthens into a 65 knot cyclone within 24-36 hours. Favorable environmental conditions suggest that 05P will intensify through 72 hours, before reaching cooler sea surface temperatures thereafter. This system will track south and then southeast across the eastern Coral Sea, taking a heading generally towards New Caledonia with time.

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation...and an area of disturbed weather (circled in red) that has a high chance of developing into a tropical cyclone within 24 hours

An area of disturbed weather (circled in red above) is now active offshore from the northwest Australia coast. It is located approximately 435 NM north-northwest of Learmonth, Australia. Recent satellite image shows a significant increase in deep convection over the past 12 hours. In addition, there are distinct banding features developing around the periphery of this low level circulation center. Light vertical wind shear exists above, with surface winds estimated to be 25-30 knots near the surface. Weather models are suggesting that this system will develop over the next 24 to 36 hours. Thus, the Joint Typhoon Warning Center (JTWC) is giving a high chance of a new tropical cyclone in the area.