https://www.nhc.noaa.gov/tafb_latest/WATL_latest.gif
Here is the ridge of five Highs blocking off Debby currently. Next post I will shown the next five progressions of Lows coming in and letting Debby move north.
https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif
The forecast opening