One big thing that matters with #92L and soon to become Isaias is the speed in which this storm organizes and tracks. If we do see a faster progressing system, it will battle less shear and therefore have more room to strengthen. However if it is a slow progression, it is likely to remain at tropical storm or maybe weak strength. Another thing that is very apparent is that this will likely weaken a bit before making landfall as shear increases closer to land. So I do believe the peak of this storms intensity will occur a decent bit offshore. The Google Deepmind 1k member ensemble represents this well. Regardless of strength, this still is likely to be a high impact storm with flooding rainfall and tropical tornadoes being possible.

— James Pettus (@PettusWX) October 5, 2026