Many cities on Ryloth were protected from these storms by encasing themselves underground, although particularly bad heat storms could make even caves near the surface temporarily uninhabitable. Twi'lek siren whistles were used to warn populations of approaching storms. In 3986 BBY, the Twi'lek Jedi Tott Doneeta attempted to use the Force to wrangle a heat storm that sprang up to threaten an exiled clan under his protection while they moved amongst the mountains in search for a new home. As a result, he received severe burns to the left side of his face.