Indo copped a blast at the start of June and almost as soon as the videos and photos started dropping, our long range forecast was calling for another. At 16 days range you've got a right not to be booking flights, but as this thing gets closer, it has not only stayed put but it's growing on the charts.
The key points are the size of the storm as well as the power. If it comes in as called, it's well over 1000 miles across. This'll create a directional spread that will defy conventional swell direction wisdom – there could be as much as 30 degrees spread over distance which is unusual at this range and will open up pretty much every spot in the Archipelago.
Currently, the headline numbers for period top the September 2013 blast but at a similar size which would still put it as the largest swell of the last few years. More realistically you have to assume the numbers will cool. We're several days from the storm blowing through – however not only has our main model held consistently from update to update, but other agency models are similarly confident. In fact the spread of size in our Multi-Model product is as low as you're likely to see at this range at this size.
Things can and no doubt will change, but if you're thinking of a last minute trip to Indo you'll want to be watching the charts this weekend. By Monday this one should be all but locked in and we'll update with satellite confirmation and the latest call.