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The HSI is a 0 to 50 point scale, allotting up to 25 points for a tropical cyclone's intensity and up to 25 points for wind field size. [34] Points are awarded on a sliding scale, with the majority of points reserved for hurricane force and greater wind fields. [34] A paper describing the scale was published in 2008. [35]
RSMC Tokyo's Tropical Cyclone Intensity Scale Category Sustained winds Violent typhoon ≥105 knots ≥194 km/h Very strong typhoon 85–104 knots 157–193 km/h Typhoon 64–84 knots 118–156 km/h Severe tropical storm 48–63 knots 89–117 km/h Tropical storm 34–47 knots 62–88 km/h Tropical depression ≤33 knots ≤61 km/h
Typhoon Faxai of 2019 impacted Japan, costing damages of an estimated US$10 billion, making it the sixth costliest typhoon on record. [4] The longest duration of a storm to hold in a category of a very strong typhoon this decade was Typhoon Goni of 2015, a year where 12 very strong typhoons developed.
Once the system's maximum sustained winds reach wind speeds of 64 knots (74 mph; 119 km/h), the JMA will designate the tropical cyclone as a typhoon—the highest category on its scale. [19] Since 2009 the Hong Kong Observatory has divided typhoons into three different classifications: typhoon, severe typhoon and super typhoon. [20]
A powerful tropical cyclone is churning in the western Pacific Ocean, and it could deliver a one-two punch to a portion of Japan this week. This comes right on the heels of Typhoon Doksuri, which ...
The Northwest Pacific basin covers a vast area in the Pacific Ocean, located north of the equator, between 100°E and 180°E. [1] Several weather agencies monitor this basin, however it is officially monitored by the Japan Meteorological Agency (JMA, RSMC Tokyo), who is responsible for forecasting, naming and issuing warnings for tropical cyclones. [1]
The Japan Meteorological Agency estimated Soudelor's central pressure at 8 a.m. EDT Tuesday was 900 millibars, making Soudelor the strongest tropical cyclone on Earth so far in 2015.
A powerful typhoon approached Japan's southwestern island of Okinawa on Tuesday, lashing the region with strong winds and high waves and forcing transportation to halt and stores to close. It was ...