At least if Irma passes on the NE side of the island, the forward motion of the storm will subtract from the counterclockwise wind rotation (for northern hemisphere). Might not help much but definitely do not want a pass on the SW side which would increase effective wind speed.

http://www.aoml.noaa.gov/hrd/tcfaq/D6.html

Last edited by Jim_Laraine; 09/04/2017 07:40 AM.