As many have said, gusts of 60mph or higher happen every winter, but there is usually a window of peak gusts, on a squall line for instance, that last a hour and blow through (literally). Storm Isha has window as long as 8 hrs. Ive a feeling quite a few trees will be toppled from continual gusts over such a long timespan. Quite a few covered scaffolding structures may also topple as the act like large sails. We wait to see.