diff --git a/code/modules/events/atmos_speed.dm b/code/modules/events/atmos_speed.dm
new file mode 100644
index 0000000000..9b248e2775
--- /dev/null
+++ b/code/modules/events/atmos_speed.dm
@@ -0,0 +1,23 @@
+/datum/round_event_control/atmos_flux
+	name = "Atmospheric Flux"
+	typepath = /datum/round_event/atmos_flux
+	max_occurrences = 1
+	weight = 5
+	endWhen = 600
+	var/original_speed
+
+/datum/round_event/atmos_flux
+	announceWhen = 1
+
+/datum/round_event/atmos_flux/announce(fake)
+	priority_announce("Atmospheric flux in your sector detected. Sensors show that air may move [(SSair.share_max_steps_target > original_speed) ? "faster" : "slower"] than usual for some time.", "Atmos Alert")
+
+/datum/round_event/atmos_flux/start()
+	original_speed = SSair.share_max_steps_target
+	if(prob(20))
+		SSair.share_max_steps_target = max(1, original_speed - rand(1,original_speed-1))
+	else
+		SSair.share_max_steps_target += rand(2,10)
+
+/datum/round_event/atmos_flux/end()
+	SSair.share_max_steps_target = original_speed