The #ECMWF #EPS trks of #90L look more like an amoeba than a defined trk. Indicates slow motion (often occurs w/ #CentralAmericanGyre llc's

Op #GFS fcast 850hPa vort. shaded & area averaged vort. in black; llvl west winds in #EPAC aid dev. of #CentralAmericanGyre in S #Caribbean

The #Atlantic #TC season almost over, b/ #MJO entering phases 8&1 may enhance env. for a #CentralAmericanGyre circ. seen in #ECMWF. #tropics

#GFS still depicting possible #CentralAmericanGyre evolution as #ITCZ breaksdown from shear to curvature vorticity.