Predicting the Weather

House Rules: By Famine

These rules were bought about by the need for the GM to be able to predict what the weather conditions would be like the next day.

Most rolls require a d% (d100)

General Weather Conditions

Season Roll (+ TI) Today
Dry Season 1 - 60 Fine
61 - 80 Overcast
81 - 90 Light Rain/Fog
91 - 95 Heavy Rain/Fog
96 + Storm
Wet Season 1 - 20 Fine
21 - 40 Overcast
41 - 60 Light Rain/Fog
61 - 80 Heavy Rain/Fog
81 + Storm
Mountains 1 - 15 Fine
16 - 30 Overcast
31 - 60 Light Rain/Fog
61 - 80 Heavy Rain/Fog
81 + Storm

Humidity

Terrain Roll Today
Plains/Hills/Forrest/Mountains 1 - 20 up to 30 %
21 - 70 31 - 50 %
71 - 80 51 - 75 %
80 - 85 76 - 80 %
86 - 90 81 - 89 %
91 - 95 90 - 95 %
96 - 100 96 + %
Jungles/Swamps 1 - 10 up to 30 %
11 - 30 31 - 50 %
31 - 60 51 - 75 %
61 - 80 76 - 80 %
81 - 95 81 - 95 %
96 - 100 96 + %

Wind

Condition Roll Today TI*
Fog None
Fine 1 - 25 None
26 - 60 Light
61 - 85 Medium + 5 %
86 - 95 Strong + 10 %
96 - 100 Gale + 20 %
Overcast 1 - 20 None
21 - 60 Light
61 - 75 Medium + 5 %
76 - 90 Strong + 10 %
91 - 100 Gale + 20 %
Light Rain 1 - 20 None
21 - 50 Light
51 - 70 Medium + 10 %
71 - 90 Strong + 20 %
91 - 100 Gale + 30 %
Heavy Rain 1 - 10 None
11 - 30 Light + 5 %
31 - 60 Medium + 10 %
61 - 80 Strong + 20 %
80 - 100 Gale + 30 %
Storm/Blizzard 1 - 40 Medium + 20 %
41 - 60 Strong + 30 %
61 - 100 Gale + 40 %
* Modify the weather rolled for the next day by TI eg. If there is heavy rain today and a gale is blowing the then modify the roll for tomorrows weather by + 30 %

Travelling Modifications due
  the Weather Conditions

None, Light & Medium Winds

Characters rate of travel is as normal

Strong

Characters may travel up to 2/3 of the normal distance in a single day.

Gale

Characters may travel up to 1/2 the normal distance in a single day. In addition, while travelling they take +1 step strain every hour that they are exposed (this is cumulative). E.g. Gomez the Stupid Troll decides he will continue. In the first hour he takes 1 step strain, the second 2 steps, the third 3 ...

Storm

While travelling through a storm characters take +1 step strain for every 2 hours exposed, like that of a gale the strain step is cumulative as time passes.

Blizzard

While travelling characters take +2 steps strain (cumulative) for every hour exposed.


When travelling, strain due to weather conditions is cumulative. e.g. In an extreme case Gomez the (extremely) stupid Troll is pushing through a blizzard, and to make matters worse there is a gale. His cumulative damage is as follows.

Time spent travelling Strain taken
1 hour step 3 (1 from gale, 2 from blizzard)
2 hour step 6 (2 from gale, 4 from blizzard)
3 hour step 9 (3 from gale, 6 from blizzard)

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