The type of season is my interpretation. A season where real tropical lows struggle in very hostile conditions while non tropical lows have a better chance. Im ignoring Grace because i think it will fall apart and Fred might make it to a sheared lopsided min cat1.. I dont think Grace should have been named and its doubtful there is a real center now. Phase 2 MJO, LATE aug and on the Euro there is a green thing in the central tropical atlantic. More suppressive phase will be here in Sept. And its rather suppressive now. I have to reply here. I mention phase 2 MJO so much because its supposed to be the EL PRIMO phase for tropical development. So far its produced nothing of note.
http://moe.met.fsu.edu/cgi-bin/ecmwf-opertc2.cgi?time=2021081500&field=Sea+Level+Pressure&hour=192hr