Datamining of the files from Patch v3.6.0 reveal that meteors will soon be hitting the map with sound files added for various distances and states:

Here’s a video to show off the sounds as they’ll appear in-game (Warning: Sounds may be loud if using headphones, turn your volume down!):

This, along with all the current teasers from Epic suggests that we should be seeing meteor impacts pretty soon, though they may be limited to a certain gamemode with the ‘Impact’ and ‘Carmine’ playlists being added to the files:

As usual, this is purely speculation based on items found in the game files and nothing should be taken as official information.