Japanese to English Other Meteorology Meteorology

Hello,

I'm currently translating a document on meteorology and came across this term "台風の存在地域". I'm looking for the specific English term for it but am unable to find it anywhere.
I can see the term on the Japan Meteorological Agency's page https://www.jma.go.jp/jp/typh/ (in the description next to the image), but its missing from the English pages of the website.
Would greatly appreciate your help on this.
Many thanks,
Saba