THESAURUS
rainstorm
brash, burst of rain, cloudburst, cyclone, deluge, dirty weather, downfall, downflow, downpour, drencher, flood, foul weather, gushing rain, heavy rain, hurricane, line squall, plash, pour, rainburst, rainspout, rough weather, scud, snowstorm, soaker, soaking rain, spate, spout, squall, storm, stormy weather, tempest, tempestuous rage, thunderstorm, tornado, torrent of rain, typhoon, waterspout, windstorm