diff --git a/mods/ra/bits/rain.aud b/mods/ra/bits/rain.aud
index da8062df54..6d14c5d7e8 100644
Binary files a/mods/ra/bits/rain.aud and b/mods/ra/bits/rain.aud differ
diff --git a/mods/ra/bits/thunder-ambient.aud b/mods/ra/bits/thunder-ambient.aud
new file mode 100644
index 0000000000..06d99c074c
Binary files /dev/null and b/mods/ra/bits/thunder-ambient.aud differ
diff --git a/mods/ra/bits/thunder.aud b/mods/ra/bits/thunder.aud
deleted file mode 100644
index aa629e90f0..0000000000
Binary files a/mods/ra/bits/thunder.aud and /dev/null differ
diff --git a/mods/ra/bits/thunder1.aud b/mods/ra/bits/thunder1.aud
new file mode 100644
index 0000000000..c45d3fc350
Binary files /dev/null and b/mods/ra/bits/thunder1.aud differ
diff --git a/mods/ra/bits/thunder2.aud b/mods/ra/bits/thunder2.aud
new file mode 100644
index 0000000000..07d78b1a92
Binary files /dev/null and b/mods/ra/bits/thunder2.aud differ
diff --git a/mods/ra/bits/thunder3.aud b/mods/ra/bits/thunder3.aud
new file mode 100644
index 0000000000..e81b9aae29
Binary files /dev/null and b/mods/ra/bits/thunder3.aud differ
diff --git a/mods/ra/bits/thunder4.aud b/mods/ra/bits/thunder4.aud
new file mode 100644
index 0000000000..db9202a550
Binary files /dev/null and b/mods/ra/bits/thunder4.aud differ
diff --git a/mods/ra/bits/thunder5.aud b/mods/ra/bits/thunder5.aud
new file mode 100644
index 0000000000..b13f81f728
Binary files /dev/null and b/mods/ra/bits/thunder5.aud differ
diff --git a/mods/ra/maps/fort-lonestar/fort-lonestar.lua b/mods/ra/maps/fort-lonestar/fort-lonestar.lua
index bbaf8a807a..965dd1ed22 100644
--- a/mods/ra/maps/fort-lonestar/fort-lonestar.lua
+++ b/mods/ra/maps/fort-lonestar/fort-lonestar.lua
@@ -152,9 +152,12 @@ Tick = function()
 		local delay = Utils.RandomInteger(1, 10)
 		Effect.Flash("LightningStrike", delay)
 		Trigger.AfterDelay(delay, function()
-			Media.PlaySound("thunder.aud")
+			Media.PlaySound("thunder" .. Utils.RandomInteger(1,6) .. ".aud")
 		end)
 	end
+	if (Utils.RandomInteger(1, 200) == 10) then
+		Media.PlaySound("thunder-ambient.aud")
+	end
 end
 
 WorldLoaded = function()