What is everyone's preferred method for tracking the weather in the BVIs?

We'll be starting our charter on Saturday. Given the time of year and a disturbance forming off Africa (and possible lack of cell service), want to have a backup. Typically I use NOAA website, windguru, windyty websites.

I know weather is broadcast via VHF and AM. I see that 780 AM radio is basically broadcast hourly on the 30 minute mark. Is the VHF broadcast running constantly?

Thanks for the advice--this will be my 9th bareboat but never had an issue with weather before (except the Maltemi in the Greek Cyclades--but that's a different story).

Thanks!
Ken