diff --git a/code/modules/events/carp_migration.dm b/code/modules/events/carp_migration.dm
index afb90d31d0..3064234b50 100644
--- a/code/modules/events/carp_migration.dm
+++ b/code/modules/events/carp_migration.dm
@@ -100,8 +100,6 @@
 						qdel(SM)
 			CHECK_TICK
 
-//
-// Overmap version of the event!
-//
-/datum/event/carp_migration/overmap
-	announceWhen = 1 // Announce much faster!
+// Overmap version
+/datum/event/carp_migration/overmap/announce()
+	return
diff --git a/code/modules/events/dust.dm b/code/modules/events/dust.dm
index 7acdb00784..b608fd0ace 100644
--- a/code/modules/events/dust.dm
+++ b/code/modules/events/dust.dm
@@ -28,3 +28,7 @@
 		if(EVENT_LEVEL_MAJOR)
 			return "super"
 	return "weak"
+
+// Overmap version
+/datum/event/dust/overmap/announce()
+	return
\ No newline at end of file
diff --git a/code/modules/events/electrical_storm.dm b/code/modules/events/electrical_storm.dm
index dbf935326f..b7040258de 100644
--- a/code/modules/events/electrical_storm.dm
+++ b/code/modules/events/electrical_storm.dm
@@ -59,3 +59,7 @@
 	if(prob(0.2 * severity))
 		T.emagged = 1
 		T.update_icon()
+
+// Overmap version
+/datum/event/electrical_storm/overmap/announce()
+	return
\ No newline at end of file
diff --git a/code/modules/events/ion_storm.dm b/code/modules/events/ion_storm.dm
index 592c963be8..8bacf9c830 100644
--- a/code/modules/events/ion_storm.dm
+++ b/code/modules/events/ion_storm.dm
@@ -72,6 +72,10 @@
 		spawn(rand(5000,8000))
 			command_announcement.Announce("It has come to our attention that \the [location_name()] passed through an ion storm.  Please monitor all electronic equipment for malfunctions.", "Anomaly Alert")
 
+// Overmap version
+/datum/event/ionstorm/overmap/announce()
+	return
+
 /*
 /proc/IonStorm(botEmagChance = 10)
 
diff --git a/code/modules/events/meteors.dm b/code/modules/events/meteors.dm
index db799f186a..7a501b4315 100644
--- a/code/modules/events/meteors.dm
+++ b/code/modules/events/meteors.dm
@@ -64,12 +64,15 @@
 	else
 		return meteors_normal
 
-
+// Overmap version
 /datum/event/meteor_wave/overmap
 	next_meteor_lower = 5
 	next_meteor_upper = 10
 	next_meteor = 0
 
+/datum/event/meteor_wave/overmap/announce()
+	return
+
 /datum/event/meteor_wave/overmap/tick()
 	if(victim && !victim.is_still()) // Meteors mostly fly in your face
 		start_side = prob(90) ? victim.fore_dir : pick(GLOB.cardinal)
diff --git a/code/modules/overmap/events/overmap_event.dm b/code/modules/overmap/events/overmap_event.dm
index 091146dfd9..7529adb032 100644
--- a/code/modules/overmap/events/overmap_event.dm
+++ b/code/modules/overmap/events/overmap_event.dm
@@ -52,7 +52,7 @@
 
 /obj/effect/overmap/event/electric
 	name = "electrical storm"
-	events = list(/datum/event/electrical_storm)
+	events = list(/datum/event/electrical_storm/overmap)
 	opacity = 0
 	event_icon_states = list("electrical1", "electrical2", "electrical3", "electrical4")
 	difficulty = EVENT_LEVEL_MAJOR
@@ -60,13 +60,13 @@
 
 /obj/effect/overmap/event/dust
 	name = "dust cloud"
-	events = list(/datum/event/dust)
+	events = list(/datum/event/dust/overmap)
 	event_icon_states = list("dust1", "dust2", "dust3", "dust4")
 	weaknesses = OVERMAP_WEAKNESS_MINING | OVERMAP_WEAKNESS_EXPLOSIVE | OVERMAP_WEAKNESS_FIRE
 
 /obj/effect/overmap/event/ion
 	name = "ion cloud"
-	events = list(/datum/event/ionstorm)
+	events = list(/datum/event/ionstorm/overmap)
 	opacity = 0
 	event_icon_states = list("ion1", "ion2", "ion3", "ion4")
 	difficulty = EVENT_LEVEL_MAJOR