No actually I didn't go to the AOML website, but probably should have. I was fishing around for something to use to do the conversion, just to try to get to a SSHS category, and I did find some info on JTWC vs JMA windspeed conversions. I found the 12% to be more common but also saw 15% mentioned as well.

I had found that 2nd link you mentioned but I had noticed it only went up to 30mph and I was looking for much higher windspeeds.

I didn't have that third link, and have bookmarked it -- thanks!

It was just real interesting to see that the AU wind gust / barometric pressure relationship was pretty consistent with our idea of a high end Cat 3, but that at the same time, both JTWC and NRL were seeing a much stronger storm both in terms of sustained windspeed and pressure.

Margie