Weather and Environmental Hazards

Weather and Environmental Hazards

Weather in Aurora: Embers of Winter ranges from rare clear skies to catastrophic storms. The world is locked in a deep freeze, but conditions change over time. Even a sunny day remains cold; favourable weather means better visibility and safer work, not comfortable temperatures.

Weather is a changing condition layered over an environment. A blizzard can cross tundra, forests or mountain passes, but its effects depend on terrain, infrastructure and local exposure.

Canon status

Confirmed environmental decisions

• The world is in a deep freeze, with almost the entire world locked in ice.
• Weather changes and includes blizzards, whiteouts, freezing rain, extreme cold and calmer periods.
• Wildlife is hardy and adapted to the frozen environment.
• Environmental mysteries are grounded in science, technology, climate and human decisions; supernatural explanations are not established canon.

Proposed weather-system design

The six-level severity scale, specific gameplay effects, event frequencies, durations and exact regional distributions below are design proposals. They can be tuned as gameplay develops.

Weather severity scale

Severity describes the overall danger and disruption of a weather event. It is not a separate weather type: snowfall, for example, can range from light to severe, and a major storm can combine several conditions.

Level	Classification	Typical conditions	Potential implications
0	Clear Skies	Rare sunlight, calm winds, excellent visibility	Easier navigation, track inspection and exterior work. Temperatures remain dangerously low.
1	Ordinary Winter Weather	Overcast skies, light snowfall, gentle winds	Normal operations with minor visibility changes and routine cold-weather precautions.
2	Severe Conditions	Heavy snowfall, strong winds, intense cold	Drifting snow, slower exterior work, greater expedition risk and increased heating demand.
3	Dangerous Weather	Blizzards, whiteouts, freezing rain	Major visibility loss, icing, blocked tracks, travel delays and possible suspension of expeditions.
4	Extreme Weather	Extreme cold snaps, major ice storms, severe blizzards	High heating demand, equipment and infrastructure damage risk, and substantial travel disruption.
5	Catastrophic Storm	Rare, prolonged, region-threatening storm systems	Routes may become impassable, structures may be damaged, and the train may need to shelter until conditions improve.

Catastrophic events should be rare and consequential rather than a constant obstacle. Their severity can depend on duration, local terrain, preparation and the condition of railway infrastructure.

Weather types

Clear skies

A rare break in the clouds brings sunlight and long-distance visibility. The cold remains severe, but crews can inspect tracks and undertake exterior work with fewer weather-related obstacles.

Overcast skies

Thick clouds create dim light and make the landscape feel enclosed. Conditions are generally manageable unless combined with heavy precipitation or strong winds.

Light snowfall

Intermittent snow is a routine feature of the frozen world. It may gradually cover tracks and landmarks but usually causes little immediate disruption.

Heavy snowfall

Snow accumulates rapidly, concealing track features, burying paths and making maintenance more demanding. Wind can turn fresh snowfall into deep drifts.

Strong winds

Powerful gusts are especially dangerous on open tundra, bridges, exposed ridges and sea ice. Winds can move loose snow, make outdoor work difficult and worsen wind chill.

Blizzard

A blizzard combines strong winds with blowing or falling snow. Visibility can fall sharply, snow drifts can form quickly and outdoor operations become hazardous.

Whiteout

In a whiteout, the boundary between snow, sky and ground becomes difficult or impossible to distinguish. It is particularly dangerous in open terrain, where landmarks are scarce and depth perception fails.

Freezing fog and ice fog

Fog reduces visibility close to the ground. In sufficiently cold conditions, tiny suspended droplets or ice crystals can coat exposed surfaces or obscure signals. Ice fog is especially plausible near settlements, industrial sites and warm water sources where moisture enters very cold air.

Freezing rain

Liquid precipitation falls through a warmer layer of air and freezes when it contacts subfreezing surfaces. It can coat rails, steps, cables, signals and machinery with dangerous ice. This event requires a suitable atmospheric temperature profile and should not occur uniformly across the coldest regions.

Ice storm

A prolonged icing event can accumulate substantial ice on structures, cables, trees and equipment. Added weight and brittle components may lead to failures, while railway operations become slower and more hazardous.

Extreme cold snap

Temperatures fall sharply below the local norm. Heating demand rises, exposed people lose heat more quickly, lubricants and mechanisms may become less reliable, and some materials become more brittle. Effects depend on equipment design and exposure time.

Snow squall

A sudden, intense burst of snow and wind can rapidly reduce visibility with little warning. Squalls are shorter than major storm systems but can still cause accidents or force a train to slow or stop.

Avalanche conditions

Avalanches are terrain hazards rather than weather types in themselves. Heavy snowfall, wind-loaded slopes and unstable snow layers can increase the danger in mountainous regions. An avalanche may bury tracks, damage bridges or isolate settlements.

Catastrophic storm

A rare major storm may combine extreme winds, heavy snowfall, whiteout conditions, severe cold and prolonged track obstruction across a wide region. It can interrupt supply lines, damage infrastructure and force trains to shelter. The aftermath may remain dangerous after the skies clear.

How weather interacts with the train

Weather affects the train through existing systems rather than introducing a separate weather resource.

Heat and power

Extreme cold and wind can increase the heat required to keep occupied wagons habitable. The Perpetual Ember Core provides the train’s power, while heating capacity and distribution determine how effectively that power keeps the train warm. Weather does not create a new resource; it changes system demand.

Water production

The locomotive gathers and processes snow to provide water. Snowfall may offer more available snow in some circumstances, but production still depends on the intake, processing capacity, system condition and movement. A storm should not automatically guarantee extra usable water, especially if ice or debris obstructs the intake.

Visibility and navigation

Heavy snow, fog and whiteouts make it harder to identify signals, junctions, obstacles and damaged track. Depending on severity and route conditions, a train may need to slow down, stop or choose another route.

Track conditions

Drifting snow, ice accumulation, avalanches and storm damage can block railway lines. The locomotive’s snow-clearing upgrade can help with suitable obstructions, but it should not solve every problem: collapsed bridges, deep structural damage or a major avalanche may require repairs or another route.

Equipment and maintenance

Ice buildup, frozen mechanisms and storm damage can create additional maintenance work. Workshop wagons support repairs; Recovery wagons help retrieve wrecks and heavy equipment; Specialist wagons support properly equipped exterior teams.

Exterior expeditions

Specialists have cold-weather equipment and training that allow them to work outside in conditions ordinary crew members cannot safely tolerate. Their capabilities are not unlimited. Severe wind, whiteout conditions, unstable ice or catastrophic storms may make an expedition too dangerous to attempt.

Weather and wildlife

Wildlife behaviour should respond to local conditions and the needs of each species. The examples below are proposals; individual species and exact behaviours remain to be designed.

• Clear periods: Animals may emerge to forage, hunt or travel between sheltered areas.
• Heavy snowfall: Tracks, burrows and food sources may be buried, making movement and foraging more difficult.
• Extreme cold: Animals may seek shelter, conserve energy or move toward reliable food and warmth.
• Blizzards: Some species may shelter, while others may become disoriented or move into protected terrain.
• After major storms: Tracks, nests, carcasses or previously buried locations may become visible, and displaced animals may appear in unusual places.

Wildlife should feel adapted to the frozen world rather than uniformly hostile. Encounters can be signs of an ecosystem under pressure, opportunities for observation or hunting, or hazards in specific circumstances.

Regional variation

Weather operates across the environmental catalogue, but terrain changes its impact.

• Frozen tundra and polar deserts: Exposed terrain offers little shelter from wind and blowing snow.
• Frozen forests: Trees can reduce wind in some places, while heavy snow and ice may break branches or block narrow routes.
• Mountains and glacial valleys: Winds can funnel through passes; unstable snow may trigger avalanches, and narrow routes can be difficult to bypass.
• Frozen seas, lakes and rivers: Storms can obscure cracks and pressure ridges. Ice conditions depend on currents, thickness and local temperatures, not just the weather at the surface.
• Geothermal hotspots: Steam and moisture can create local fog or icing when they meet extremely cold air. Warm ground does not guarantee safe surrounding terrain.
• Urban ruins, railway graveyards and abandoned facilities: Structures can provide shelter but may also collapse under snow or ice, conceal hazards, or become exposed to wind through broken walls and roofs.
• Tunnels and underground networks: Conditions may be more sheltered from surface winds, but flooding, ice, ventilation failures and structural damage can create different hazards.

Weather zones should not be permanently identical to one biome. A storm can move through several environments, while local terrain determines how dangerous it becomes.

Weather can create opportunities

Severe weather is not only a penalty. It can change the strategic situation and reveal new possibilities.

• A storm may uncover wreckage or expose objects previously buried beneath snow.
• Blowing snow may reveal old structures in one place while burying a track elsewhere.
• Poor visibility can conceal movement, creating opportunities for raiders or for a train trying to avoid detection.
• A storm may force rival trains to shelter near the same station or settlement.
• The aftermath of a storm can reveal wildlife tracks, damaged infrastructure, newly exposed resources or previously inaccessible locations.
• Settlements may request emergency supplies or repairs when their routes are cut off.

These outcomes should depend on the location and event rather than occur automatically after every storm.

Design principles

1. Weather varies by region. Terrain and exposure change how the same event affects a location.
2. Weather has duration and recovery. A short snow squall differs from a multi-day blizzard. Tracks may remain blocked after the storm passes.
3. Preparation matters. Snow clearing, maintenance, route knowledge, suitable equipment and the ability to shelter reduce risk, but do not eliminate every danger.
4. Severe events are meaningful. Catastrophic storms should be rare enough to change plans and have lasting consequences.
5. The science stays grounded. Strange conditions should ultimately relate to climate, geology, technology, infrastructure or human decisions unless future lore explicitly establishes otherwise.

Open design questions

The following are intentionally unresolved:

• Exact frequency, duration and probability of each weather event.
• The numerical penalties or resource-demand changes caused by weather.
• Whether players receive forecasts, warnings or only local observations.
• Which regions have recurring storm patterns and how weather changes across seasons, if seasons remain meaningful in the deep freeze.
• The specific wildlife species and their detailed responses to weather.
• The extent to which catastrophic storms can permanently alter routes or settlements.