Hurricane Iselle and Tropical Storm Julio - Headed for Hawaii

As there's no science section in current affairs i thought i'd trial this thread here. If it proves popular then i'll create it for other major weather events. If not then at least i tried.

Hurricane Iselle
Hurricane Iselle has defied model runs and become a major category 4 annular hurricane with sustained winds of 140mph (strong enough to rip roofs off). It has a near perfect structure and is headed near direct west for the big Island of Hawaii. The NHC believe that this will be a little below hurricane strength should it hit but should Iselle intensify further then it could well hit at hurricane strength. This would be the first time a hurricane has hit the island from a vector more easterly than SSE.

The images below show its forecast track and current satellite image (near perfect)..

Tropical Storm Julio
Incredibly Tropical Storm Julio is forecast to be on a near exact replica path of Iselle and also forecast to be around the vicinity of Hawaii (possibly hit). Julio is forecast to only reach strong category 1 status (it may end up over cooler waters upwelled by Iselle) however Iselle was not forecast to reach this strength either. A second Hawaii hit in succession would be devastating in terms of flooding even if not a strong hit and also a record.

The images below show its forecast track and current satellite image..

Iselle..







Julio..







.........

Discuss.

What type of damage can we expect if wind speeds will be down to 35mph by the time it hits Hawaii?