By September NUMBER@1 , upper-level winds started to become more favorable for tropical cyclone formation and by that morning visible satellite imagery indicated that a tropical depression could be forming about NUMBER@2 mi -LRB- NUMBER@3 km -RRB- east of LOCATION@1 , LOCATION@2 .

By September NUMBER@1 upper-level winds started decrease as conditions became more favorable for tropical cyclone formation and by that morning visible satellite imagery showed that a tropical depression could be forming about NUMBER@2 mi -LRB- NUMBER@3 km -RRB- east of LOCATION@1 , LOCATION@2 .
