of < 30 degrees = "Tropics", 30 to 60 degrees =
"Temperate", 60 to 90 degrees = "Cold". As reference, N.
Florida or N. Egypt is about 30 degrees and S. Alaska or S. Norway is about
< 1,000 feet = "Sealevel", 1,000 to 5,000 =
"Lowland"s, 5,000 to 10,000 = "Highlands", >10,000 =
"Days" start with Sunrise and end with Sunset. Weather
"Nights" start with Sunset and end with Sunrise on the following
events with a sufficiently long Duration should be assumed to span into the
start of the following Day or Night andmay cause events listed as Rain to turn into Snow events, or Snow
events to turn into Rain events, which must be manually tracked.
daytime temperatures are typically supposed to last for multiple days.
Generating a low numbers of days will disrupt this intented result.
inches of snow adds 5 feet of movement cost per square, 12+ inches adds 10 of
movement cost per square, 36+ inches cannot be walked through without
snowshoes. Total accumulation must be tracked manually. Rainfall is not
and Thundersnow have a low, GM-detemerined chance of a Lightning Strike on
players: 1/10 minutes for Thunderstorm and 1/hour for Thundersnow. Lightning
strikes deal 10d8 Electricity damage, Reflex Save DC 18 for half, -4 on save
if in metal armor.
inclement Wind, Skill penalties apply per GM discretion, whick might stack
with Peception penalties. Wind of 20 to 30 MPH impede Tiny creatures, 30 to
50 impede Small and may blow away Tiny, 50+ impede Medium and may blow away
Wind Speed is listed even when Tornados and Hurricanes are present. These
rare secondary events occur during or after the Thundersorm and must be
to days with constant sunlight or darkness, the system currently produces
some erroneous results if area is near a Pole in Summer or Winter.
Alterations to Posted Rules
Winter temperature for Tropics was increased to 65 degrees to mostly remove
the chance of frozen precipitation at night.
Temp Biome?" option was added to decrease temperature variations by
about 40% for moderate Biomes such as Mediterranean.
renamed to "Light Rain" and "Rain" renamed to
"Medium Rain" to create a consistent naming convention.
Wind Speed set to 51 to 74 as opposed to "51+" as
"Hurricane" threshhold is 75.
replaces "Sandstorm". Duststorm and Haboop and may occur in Deserts
when there are high winds and no precipitation. Duststorm otherwise follows
descriptions changed to "None", "Light",
"Medium", and "Heavy" to create a consistent naming
temperature for "Thunderstorm with Hail" liminted to 79.
Night temperature drops roughly doubled depending on Climate and Biome.
absent Blizzzard effects added by extrapolation from other snow events.
temperatures and wind with ongoing durations, a twice-daily variation of -3
to 3 was added.
frequency for most categories increased by 5% each due to common elimination
of fog events due to wind.
of Precipitation Intensity by 2 levels for "Dought" areas ignored,
as Precipitation Frequency and Intensity were already very low.
"Force Precipitation?" option to manually adjust Precipitation
frequncy. Precipitation events are still limited to one per 24-hour block,
but often persist into the following 12-hour period.
"Adjust Temperature?" option to manually increase or decrease
"Weaker Winds?" option to decrease frequency of inclement Wind by
Wind Chill to output. I invite GMs to use this as the effective temperature
when determining cold weather effects on characters outside of shelter.
Tornados for Highlands and High Mountains.
temperatures increased moderately for Day and decreased moderately for Night.