1900hurricane wrote:NotoSans wrote:According to JMA, Jebi is the first typhoon since Yancy'93 making landfall over the Japanese main islands with sustained winds of 85KT+. Yancy made landfall over Kyushu with sustained winds of 95KT.
What landfall intensity does JMA have Goni '15 at? I thought that was an 85 or 90 kt landfall in west Kyushu.
JMA has a (IMO weird) definition for landfall different from other agencies - if a typhoon lands over a small island or peninsula then moves back over water within a short period of time, it would be classified as a "passage" rather than a "landfall".
For Goni, the 24/19Z best track position was classified as a "passage" over Kagoshima Prefecture, and the first "landfall" point was 24/21Z over the Kumamoto Prefecture. Thus, the official "landfall" intensity was 955mb/80kt, since the 24/19Z point was not considered a "landfall".
That also explains why all systems landing over the Ryukyu islands are not considered "landfall" - they are "passage" instead, according to JMA.
Again, a bit weird, but that's how the Japanese do their stuff.