Western Pacific Typhoon Trends

By Paul Homewood

 

 

For natural reasons, most attention is focussed on Atlantic hurricanes rather than elsewhere.

The Japan Meteorological Agency handily publishes data on the annual count of tropical cyclones reaching at least tropical storm frequency in the western Pacific:

 

 image

https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/climatology.html

Whatever trend there is appears to be downwards.

The JMA don’t give the split between storms and typhoons, but we can get this from Wikipedia:

The number of cyclones reaching typhoon strength, 74 mph, shows a clear decline.

The trend is less clear for super typhoons, effectively Cat 4 and 5s on the Saffir Simpson scale. There was a sharp drop off in the 1970s and 80s. Since then numbers have reverted to pre-1970 levels.

 

image

image

https://en.wikipedia.org/wiki/Pacific_typhoon_season

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January 5, 2022 at 01:09PM

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