These guides list the bonuses and penalties associated with each type of non-magical weather and every type of lighting, magical, technological, natural or otherwise, for Accuracy, Perception, and Sneak rolls. For a list of cover and its various types, complete with accuracy penalty suffered by shooter and DT it provides, see Chapter 7. These values represent a combination of visual and auditory perception effects.
Weather
Accuracy/Perception
Modifier
Sneak
Modifier
Light (Assumed)
Visibility Range, ft.
Sunny
+1 MFD
-2 MFD
Bright
15x PER
Partly Cloudly
None
-1 MFD
Well Lit
10x PER
Overcast (Standard)
None
None
Overcast
10x PER (Normal)
Drizzle
-5 Roll Penalty
+1 MFD
Filtered/ Dim
10x PER
Stormy (Rain)
-1 MFD
+1 MFD
Dim
5x PER
Typhoon/Hurricane
-3 MFD
+2MFD
Dark
5x PER
Hailstorm
-2 MFD
+1 MFD
Dim
5x PER
Stormy (Snow)
-1 MFD
+1 MFD
Dim
5x PER
Blizzard
-3 MFD
+2 MFD
Dim
2x PER
High Wind
-1 MFD (Acc. only)
None
Overcast
10x PER
Mist
-5 Roll Penalty
+1 MFD
Overcast
5x PER
Fog/Clouds/Smoke
-1 MFD
None
Overcast
5x PER
Magical Fog/Clouds
-2 MFD
+1 MFD
Overcast
3x PER
Eclipse
-1 MFD
+2 MFD
Dark
3x PER
Dust Storm
-2 MFD
+1 MFD
Dim
3x PER
Sandstorm
-3 MFD
+3 MFD
Dark
PER
Light Level
Example Location(s)
Accuracy/Perception Modifier
Sneak Modifier
Visibility Range, ft.
Bright or Daylight
Direct Sunlight above the Cloud layer, Floodlights
+1 MFD
-2 MFD
15x PER
Well Lit
Pipbuck Lighting, buildings with powered lighting systems
None
-1 MFD
10x PER
Overcast
Wasteland outdoors.
None
None
10x PER
Dim
Ruined buildings with windows, lantern or campfire light, night around Fillydelphia
-5 Roll Penalty
+1 MFD
5x PER
Dark
Caves, Office basements without windows, wasteland night
-1 MFD
+2 MFD
2x PER
QUICK REFERENCE MFD CONVERSION TABLE
1½
(Your Stat Level)
¾
½
¼
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