Sporadic-E has never been accomplished higher than 250MHz. Over meteor scatter even on 432MHz it is almost impossbile to work anything without having a few hundred watts and a >20dBi antenna setup on both sides. The same for Airplane scatter. I do work with this mode as a HAM on 70cm and 23cm but with huge Yagis (>19Ele). I cannot imagine how this little LoRa Power should reach anything with this little undirected power.
But I guess something: Tropo. Why? There was a quite rare january report of a duct around that date: