Today, we put our bets on an area south of Alta Floresta, where the satellites had seen a large region of smoke, not very heavy, but good enough. The forecast was not for very strong convection, but we were willing to take a chance. HALO took off at 1052L and passed through a mix of clouds. Soon we saw nicely developed cumulus to our east, and even some threatening-looking giant Cb. Promising, but here the air was too clean for our purposes.