diff --git a/code/datums/weather/weather_types/radiation_storm.dm b/code/datums/weather/weather_types/radiation_storm.dm
index 6765cdf2cd..0d763aa5ad 100644
--- a/code/datums/weather/weather_types/radiation_storm.dm
+++ b/code/datums/weather/weather_types/radiation_storm.dm
@@ -22,27 +22,17 @@
 	target_trait = ZTRAIT_STATION
 
 	immunity_type = "rad"
+	
+	var/radiation_intensity = 100
 
 /datum/weather/rad_storm/telegraph()
 	..()
 	status_alarm(TRUE)
 
-
 /datum/weather/rad_storm/weather_act(mob/living/L)
 	var/resist = L.getarmor(null, "rad")
-	if(prob(40))
-		if(ishuman(L))
-			var/mob/living/carbon/human/H = L
-			if(H.dna && !HAS_TRAIT(H, TRAIT_RADIMMUNE))
-				if(prob(max(0,100-resist)))
-					H.randmuti()
-					if(prob(50))
-						if(prob(90))
-							H.randmutb()
-						else
-							H.randmutg()
-						H.domutcheck()
-		L.rad_act(20)
+	var/ratio = 1 - (min(resist, 100) / 100)
+	L.rad_act(radiation_intensity * ratio)
 
 /datum/weather/rad_storm/end()
 	if(..())