Typhoon Soulik's eyewall appears to have rebuilt as evidenced in NASA satellite imagery. Soulik is approaching Taiwan and is forecast to make landfall in southeastern China over the weekend of July 13 and 14.
On July 12 at 05:05 UTC (1:05 a.m. EDT) the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite captured a visible image of Tropical Typhoon Soulik approaching Taiwan. The image clearly showed a tight, powerful ring of thunderstorms around Soulik's center with a small eye in the center. Soulik underwent eyewall reconstruction on July 12.
The MODIS imagery also revealed that the clouds and thunderstorms in the northern quadrant were less dense than in the southern quadrant. Multispectral and microwave satellite imagery confirm the visible imagery.
The Joint Typhoon Warning Center noted that multispectral satellite imagery showed Soulik remains organized and has large bands of thunderstorms wrapping around the southern semicircle, and into the storm's center. Microwave satellite imagery however, shows subsidence in the northwestern quadrant of the tropical cyclone. Subsidence is the sinking of air that prevents the development of thunderstorms that make up the tropical cyclone. The combination of these data suggests that the strongest part of the storm is the southern quadrant and the weakest part is the northeast quadrant.
The Joint Typhoon Warning Center noted that Soulik's expected track has shifted slightly to the south, which is not good news for Taiwan. On the projected JTWC track, Soulik's center will cross the top third of the island, south of Taipei on July 12 and 13 before crossing the Taiwan Strait.
According to China's National Meteorological Center (NMC), Soulik will move to the coastal areas of Zhejiang and Fujian. Then it will land in the coastal areas of northern Fujian Province to southern Zhejiang from 12:00 p.m. local time, to the evening of July 13.
On July 12 at 1200 UTC (8 a.m. EDT), Typhoon Soulik's maximum sustained winds were near 90 knots (103 mph/166.7 kph). At that time, Soulik was centered near 23.4 north and 124.3 east, about 253 nautical miles southwest of Kadena Air Base, Japan. Soulik is moving to the west-northwest at 10 knots (11.5 mph/18.5 kph) and generating very rough seas with wave heights to 43 feet (13.1 meters).
The China NMC has issued an orange alert for Taiwan, and northern Fujian Province to southern Zhejiang.