Typhoon Hinnamnor: First Category 5 Cyclone on Earth in 2022



The world's ocean basins have been largely quiet and free of tropical cyclones for the majority of 2022. Typhoon Hinnamnor, which quickly spun up to category-5 status in the Western Pacific Ocean last week, disturbed the calm. The storm's route has been unpredictable thus far, and it's not yet certain whether it will make landfall.

On August 31, 2022, late in the morning, an astronaut at the International Space Station captured the image above. On September 1, 2022, NASA's Aqua spacecraft took a natural-color picture of Hinnamnor using the Moderate Resolution Imaging Spectroradiometer (MODIS). In spite of the fact that the typhoon in the photograph appeared to be moving toward Taiwan, it had already begun to shift north and away from the island.

The U.S. Joint Typhoon Warning Center reported that Hinnamnor had sustained winds of 115 knots (140 miles/220 kilometers per hour) with gusts as high as 140 knots (160 miles/260 kilometers per hour) at the time of the MODIS image. Around 600 kilometers (330 nautical miles) south of Okinawa, the storm was situated. The winds had decreased to 80 knots (90 miles/150 kilometers per hour) by the evening of September 2, with gusts reaching 100 knots (120 miles/190 kilometers per hour). Just 50 kilometers had been covered by the storm (30 miles).

On August 30, Hinnamnor, with winds of 260 kilometers per hour (160 miles per hour), became the first category-5 storm to hit Earth in 2022. According to Yale Climate Connections, the first storm of this magnitude formed rather late in the year; globally, an average of 5.3 category-5 storms emerge each year.

In the first week of September, Hinnamnor may go to South Korea or southern Japan, according to forecasters. The storm may be sustained and strengthened over the next few days thanks to sea surface temperatures that are several degrees above average.

Despite the fact that the Western Pacific typhoon season lasts the entire year, most storms typically develop between May and October. 13 tropical storms or depressions have formed in the basin so far in 2022. In four of them, typhoons have formed.

Using MODIS information from NASA EOSDIS LANCE and GIBS/Worldview, Lauren Dauphin created this NASA Earth Observatory image. The ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center, contributed astronaut photo ISS067-E-302073, which was taken on August 31, 2022, with a Nikon D5 digital camera and a 30 millimeter lens.

By MICHAEL CARLOWICZ, NASA EARTH OBSERVATORY 

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