diff --git a/Content.IntegrationTests/DummyGameTicker.cs b/Content.IntegrationTests/DummyGameTicker.cs
index 7ce49d81b3..c15a3482b4 100644
--- a/Content.IntegrationTests/DummyGameTicker.cs
+++ b/Content.IntegrationTests/DummyGameTicker.cs
@@ -14,6 +14,9 @@ namespace Content.IntegrationTests
     {
         public GameRunLevel RunLevel { get; } = GameRunLevel.InRound;
 
+        public MapId DefaultMap { get; } = MapId.Nullspace;
+        public GridId DefaultGridId { get; } = GridId.Invalid;
+
         public event Action<GameRunLevelChangedEventArgs> OnRunLevelChanged
         {
             add { }
diff --git a/Content.Server/GameTicking/GameTicker.cs b/Content.Server/GameTicking/GameTicker.cs
index ad39d3d26d..bd54b0d1dd 100644
--- a/Content.Server/GameTicking/GameTicker.cs
+++ b/Content.Server/GameTicking/GameTicker.cs
@@ -99,6 +99,10 @@ namespace Content.Server.GameTicking
 
 
         [ViewVariables] public bool Paused { get; private set; }
+        
+        [ViewVariables] public MapId DefaultMap { get; private set; }
+        
+        [ViewVariables] public GridId DefaultGridId { get; private set; }
 
         [ViewVariables]
         public GameRunLevel RunLevel
@@ -687,10 +691,11 @@ namespace Content.Server.GameTicking
 
         private void _preRoundSetup()
         {
-            var newMapId = _mapManager.CreateMap();
+            DefaultMap = _mapManager.CreateMap();
             var startTime = _gameTiming.RealTime;
-            var grid = _mapLoader.LoadBlueprint(newMapId, MapFile);
-
+            var grid = _mapLoader.LoadBlueprint(DefaultMap, MapFile);
+            
+            DefaultGridId = grid.Index;
             _spawnPoint = grid.ToCoordinates();
 
             var timeSpan = _gameTiming.RealTime - startTime;
diff --git a/Content.Server/Interfaces/GameTicking/IGameTicker.cs b/Content.Server/Interfaces/GameTicking/IGameTicker.cs
index 36d9fcac7a..559c6a6497 100644
--- a/Content.Server/Interfaces/GameTicking/IGameTicker.cs
+++ b/Content.Server/Interfaces/GameTicking/IGameTicker.cs
@@ -15,6 +15,16 @@ namespace Content.Server.Interfaces.GameTicking
     public interface IGameTicker
     {
         GameRunLevel RunLevel { get; }
+        
+        /// <summary>
+        ///     The map loaded by the GameTicker on round start.
+        /// </summary>
+        MapId DefaultMap { get; }
+        
+        /// <summary>
+        ///     The GridId loaded by the GameTicker on round start.
+        /// </summary>
+        GridId DefaultGridId { get; }
 
         event Action<GameRunLevelChangedEventArgs> OnRunLevelChanged;
         event Action<GameRuleAddedEventArgs> OnRuleAdded;
diff --git a/Content.Server/StationEvents/RadiationStorm.cs b/Content.Server/StationEvents/RadiationStorm.cs
index c57ce8bcd0..e3d1027887 100644
--- a/Content.Server/StationEvents/RadiationStorm.cs
+++ b/Content.Server/StationEvents/RadiationStorm.cs
@@ -1,9 +1,11 @@
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.Components.StationEvents;
+using Content.Server.Interfaces.GameTicking;
 using Content.Shared.GameObjects.Components.Mobs;
 using Content.Shared.Utility;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects.EntitySystems;
+using Robust.Server.Interfaces.Timing;
 using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.GameObjects;
 using Robust.Shared.Interfaces.Map;
@@ -104,12 +106,14 @@ namespace Content.Server.StationEvents
 
             if (_timeUntilPulse <= 0.0f)
             {
-                // TODO: Probably rate-limit this for small grids (e.g. no more than 25% covered)
-                foreach (var grid in _mapManager.GetAllGrids())
-                {
-                    if (grid.IsDefaultGrid) continue;
-                    SpawnPulse(grid);
-                }
+                var pauseManager = IoCManager.Resolve<IPauseManager>();
+                var gameTicker = IoCManager.Resolve<IGameTicker>();
+                var defaultGrid = IoCManager.Resolve<IMapManager>().GetGrid(gameTicker.DefaultGridId);
+
+                if (pauseManager.IsGridPaused(defaultGrid))
+                    return;
+                
+                SpawnPulse(defaultGrid);
             }
         }