diff --git a/apps/opencs/model/world/columns.cpp b/apps/opencs/model/world/columns.cpp
index 45759cd234..f487266dbb 100644
--- a/apps/opencs/model/world/columns.cpp
+++ b/apps/opencs/model/world/columns.cpp
@@ -235,6 +235,7 @@ namespace CSMWorld
             { ColumnId_RegionSounds, "Sounds" },
             { ColumnId_SoundName, "Sound Name" },
             { ColumnId_SoundChance, "Chance" },
+            { ColumnId_SoundProbability, "Probability" },
 
             { ColumnId_FactionReactions, "Reactions" },
             { ColumnId_FactionRanks, "Ranks" },
diff --git a/apps/opencs/model/world/columns.hpp b/apps/opencs/model/world/columns.hpp
index 74e5bdd006..f5a8e446a5 100644
--- a/apps/opencs/model/world/columns.hpp
+++ b/apps/opencs/model/world/columns.hpp
@@ -349,6 +349,8 @@ namespace CSMWorld
 
             ColumnId_SelectionGroupObjects = 316,
 
+            ColumnId_SoundProbability = 317,
+
             // Allocated to a separate value range, so we don't get a collision should we ever need
             // to extend the number of use values.
             ColumnId_UseValue1 = 0x10000,
diff --git a/apps/opencs/model/world/data.cpp b/apps/opencs/model/world/data.cpp
index ba1f1e5ac3..7bee635678 100644
--- a/apps/opencs/model/world/data.cpp
+++ b/apps/opencs/model/world/data.cpp
@@ -301,8 +301,8 @@ CSMWorld::Data::Data(ToUTF8::FromType encoding, const Files::PathContainer& data
     mRegions.addColumn(new NestedParentColumn<ESM::Region>(Columns::ColumnId_RegionWeather));
     index = mRegions.getColumns() - 1;
     mRegions.addAdapter(std::make_pair(&mRegions.getColumn(index), new RegionWeatherAdapter()));
-    mRegions.getNestableColumn(index)->addColumn(
-        new NestedChildColumn(Columns::ColumnId_WeatherName, ColumnBase::Display_String, false));
+    mRegions.getNestableColumn(index)->addColumn(new NestedChildColumn(
+        Columns::ColumnId_WeatherName, ColumnBase::Display_String, ColumnBase::Flag_Dialogue, false));
     mRegions.getNestableColumn(index)->addColumn(
         new NestedChildColumn(Columns::ColumnId_WeatherChance, ColumnBase::Display_UnsignedInteger8));
     // Region Sounds
@@ -313,6 +313,8 @@ CSMWorld::Data::Data(ToUTF8::FromType encoding, const Files::PathContainer& data
         new NestedChildColumn(Columns::ColumnId_SoundName, ColumnBase::Display_Sound));
     mRegions.getNestableColumn(index)->addColumn(
         new NestedChildColumn(Columns::ColumnId_SoundChance, ColumnBase::Display_UnsignedInteger8));
+    mRegions.getNestableColumn(index)->addColumn(new NestedChildColumn(
+        Columns::ColumnId_SoundProbability, ColumnBase::Display_Float, ColumnBase::Flag_Dialogue, false));
 
     mBirthsigns.addColumn(new StringIdColumn<ESM::BirthSign>);
     mBirthsigns.addColumn(new RecordStateColumn<ESM::BirthSign>);
diff --git a/apps/opencs/model/world/nestedcoladapterimp.cpp b/apps/opencs/model/world/nestedcoladapterimp.cpp
index 8b8c7b17be..9e5363e606 100644
--- a/apps/opencs/model/world/nestedcoladapterimp.cpp
+++ b/apps/opencs/model/world/nestedcoladapterimp.cpp
@@ -414,20 +414,31 @@ namespace CSMWorld
 
     QVariant RegionSoundListAdapter::getData(const Record<ESM::Region>& record, int subRowIndex, int subColIndex) const
     {
-        ESM::Region region = record.get();
+        const ESM::Region& region = record.get();
 
-        std::vector<ESM::Region::SoundRef>& soundList = region.mSoundList;
+        const std::vector<ESM::Region::SoundRef>& soundList = region.mSoundList;
 
-        if (subRowIndex < 0 || subRowIndex >= static_cast<int>(soundList.size()))
+        const size_t index = static_cast<size_t>(subRowIndex);
+        if (subRowIndex < 0 || index >= soundList.size())
             throw std::runtime_error("index out of range");
 
-        ESM::Region::SoundRef soundRef = soundList[subRowIndex];
+        const ESM::Region::SoundRef& soundRef = soundList[subRowIndex];
         switch (subColIndex)
         {
             case 0:
                 return QString(soundRef.mSound.getRefIdString().c_str());
             case 1:
                 return soundRef.mChance;
+            case 2:
+            {
+                float probability = 1.f;
+                for (size_t i = 0; i < index; ++i)
+                {
+                    const float p = std::min(soundList[i].mChance / 100.f, 1.f);
+                    probability *= 1.f - p;
+                }
+                return probability * std::min(soundRef.mChance / 100.f, 1.f) * 100.f;
+            }
             default:
                 throw std::runtime_error("Region sounds subcolumn index out of range");
         }
@@ -463,7 +474,7 @@ namespace CSMWorld
 
     int RegionSoundListAdapter::getColumnsCount(const Record<ESM::Region>& record) const
     {
-        return 2;
+        return 3;
     }
 
     int RegionSoundListAdapter::getRowsCount(const Record<ESM::Region>& record) const