Thanks rush2 for that, also flying in ITCZ and found the following helpful in planning a
day or a
day of flying, because make no mistake you will go anyway... Like previous poster said problems will be on the ground, possibly also braking action on the runway and other traffic.
Based on these below and forecasts have fuel for a reasonable alternate.
http://www.sat24.com/cm
EuroWEATHER - Meteosat images