Wonderful, Isaac brought his girlfriend Joyce to the party and I think her other boyfriend is chasing her, we will just call him 11 for now as he is over Cape Verde Islands
TROPICAL STORM ISAAC
- Isaac remains very large in size, and has become somewhat better organized, but is not quite all the way there yet. The center is still broad and unfocused, and the convection (thunderstorms) is not symmetric. Thus the storm has not yet strengthened as much as some models had forecast. We'll be monitoring to see to what extent the core can consolidate and tighten up, and if so, to what extent and at what rate that leads to substantive strengthening.
- Regardless of how much the storm is able to crank up in that respect, it will be accompanied by heavy rain, and a high threat of flash flooding and mudslides will exist, especially in places such as Haiti, the Dominican Republic, and Puerto Rico where there is much hilly terrain. So far, the storm's heavy rain has been asymmetric to the south of the center, which has spared the islands to the north, but that can't be guaranteed to continue. And the large size of Isaac's circulation will likely cause bands of downpours to linger well after the center passes.
- Thereafter, early next week, we expect Isaac to track somewhere between Florida and Louisiana (inclusive). That's a relatively confident, narrow forecast for what is still quite a few days away, but critical uncertainties remain in track, intensity, and details of impacts.
- Regardless, with high confidence that that part of the country will be affected, residents and visitors there (and in the northeast Yucatan) should be vigilant and stay abreast of the latest forecast trends.
TROPICAL STORM JOYCE
- Tropical Depression Ten has become Tropical Storm Joyce. That ties for the second earliest on record for the 10th storm of the season. At the moment the only land area that appears to be in play is Bermuda, and that's not until early next week.
WESTERN PACIFIC
- The core of Typhoon Tembin is bearing down on Taiwan.
- Typhoon Bolaven is expected to continue to strengthen and become very intense, and track close to Okinawa this weekend.
EASTERN PACIFIC
- No tropical cyclones present or imminent.