diff --git a/code/__DEFINES/time.dm b/code/__DEFINES/time.dm
index 0ac278a4f86..83a88eabd84 100644
--- a/code/__DEFINES/time.dm
+++ b/code/__DEFINES/time.dm
@@ -38,6 +38,7 @@
 #define IAN_HOLIDAY "Ian's Birthday"
 #define HOTDOG_DAY "National Hot Dog Day"
 #define ICE_CREAM_DAY "National Ice Cream Day"
+#define CHERNOBYL_ANNIVERSARY "Chernobyl Disaster Remembrance Day"
 /*
 
 Days of the week to make it easier to reference them.
diff --git a/code/modules/events/radiation_storm.dm b/code/modules/events/radiation_storm.dm
index 5b2b6b71ea1..fdc37f29715 100644
--- a/code/modules/events/radiation_storm.dm
+++ b/code/modules/events/radiation_storm.dm
@@ -7,8 +7,13 @@
 	min_wizard_trigger_potency = 3
 	max_wizard_trigger_potency = 7
 
-/datum/round_event/radiation_storm
+/datum/round_event_control/radiation_storm/New()
+	. = ..()
+	if(max_occurrences > 0 && weight > 0 && check_holidays(CHERNOBYL_ANNIVERSARY))
+		weight *= 2
+		max_occurrences += 2
 
+/datum/round_event/radiation_storm
 
 /datum/round_event/radiation_storm/setup()
 	start_when = 3
diff --git a/code/modules/holiday/holidays.dm b/code/modules/holiday/holidays.dm
index ddf0b30145f..a39855ce114 100644
--- a/code/modules/holiday/holidays.dm
+++ b/code/modules/holiday/holidays.dm
@@ -354,6 +354,21 @@ GLOBAL_LIST_INIT(holiday_mail, list())
 /datum/holiday/anz/getStationPrefix()
 	return pick("Australian","New Zealand","Poppy", "Southern Cross")
 
+/datum/holiday/chernobyl
+	name = CHERNOBYL_ANNIVERSARY
+	begin_day = 26
+	begin_month = APRIL
+
+/datum/holiday/chernobyl/getStationPrefix()
+	if(prob(3))
+		return "Not Great, Not Terrible"
+
+	return pick("Atomic", "Nuclear", "Radiation", "Plutonium", "Uranium", "Corium", "Zirconium", "Graphite", "Scram", "Explosion")
+
+/datum/holiday/chernobyl/greet()
+	return "On this day in 1986, the Chernobyl nuclear power plant melted down, causing one of the worst nuclear disasters in human history. \
+		Today serves as a reminder to the lives lost and to the rigorous safety standards our engineers must adhere to when providing power to the station."
+
 // MAY
 
 /datum/holiday/labor