The fourth tropical depression of the western Pacific Ocean strengthened into a tropical storm and was named Chanthu today. Infrared imagery from the Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA’s Aqua satellite captured areas of strong convection from northeast to southwest, but convection isn’t showing on the storm’s west side. At 1500 UTC (11 a.m. EDT) on July 20, Tropical Storm Chanthu’s maximum sustained winds were near 46 mph (40 knots). Chantu was located about 240 nautical miles south of Hong Kong, China, near 18.6 North and 114.3 East. It was moving west-northwestward near 8 mph (7 knots), and is forecast to make a landfall south of Hong Kong by 1800 UTC (3 p.m. EDT) tomorrow, July 21 or 3 a.m. local time/Hong Kong on July 22. The Hong Kong Observatory has posted Standby Signal, No. 1. That means that a tropical cyclone now centred within about (~500 miles) 800 kilometers of Hong Kong. |
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