NASA-NOAA’s Suomi NPP satellite passed over the Philippine Sea on September 4 and provided a visible image of Haishen which had strengthened into a super typhoon.
The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument onboard the Suomi nuclear power plant provided a visible image of Haishen that revealed a large, circular, organized structure of severe thunderstorms encircling the open eye. The wall of the eye, the strong thunderstorms that surround the open eye, is estimated to be 81 nautical miles wide. Satellite data indicates that the eye is about 31 nautical miles wide. The storm is at least 450 miles in diameter, as tropical storm force winds extend up to 225 miles from the center.
The Joint Typhoon Warning Center (JTWC) in Honolulu, Hawaii, noted at 5:00 a.m. EDT (09:00 UTC) on September 4 that Super Typhoon Haishen had maximum sustained winds of nearly 135 knots (155 mph / 250 km / h). It is currently a Category 4 hurricane / typhoon. It was centered near 22.2 degrees north latitude and 134.3 degrees east longitude, approximately 439 nautical miles southeast of the air base. of Kadena, on the island of Okinawa, Japan. The storm was moving northwest.
JTWC forecasters expect Haishen to look north-northwest while stepping up further. It is expected to peak later on September 4 with sustained winds of nearly 140 knots (161 mph / 259 km / h), which would make it equivalent to a Category 5 hurricane on the Saffir-Simpson wind scale. The JWTC predicts that Haishen will pass west of Kyushu, Japan, and make landfall in South Korea after 3 days.
NASA studies tropical cyclones
Hurricanes / Tropical Cyclones are the most powerful weather events on Earth. NASA’s expertise in space and scientific exploration contributes to essential services provided to the American people by other federal agencies, such as hurricane weather forecasting.
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By Rob Gutro
NASA Goddard Space Flight Center
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