<a href="https://github.com/Roll20/roll20-api-scripts/blob/master/PageFX/README.md" rel="nofollow">https://github.com/Roll20/roll20-api-scripts/blob/master/PageFX/README.md</a> <a href="https://wiki.roll20.net/Custom_FX" rel="nofollow">https://wiki.roll20.net/Custom_FX</a> <a href="https://wiki.roll20.net/Text_Chat#Special_Effects_.28.2Ffx.29" rel="nofollow">https://wiki.roll20.net/Text_Chat#Special_Effects_.28.2Ffx.29</a> I haven't used PageFx, but I think if you use 'bubbling-water' or 'glow-smoke' those might get pretty close to rain or snow.