- Weather Sandbox wildfire scenarios depend on airflow, humidity, resolution, and fire placement.
- Best setup: Use a vertical resolution of 300 for more realistic simulation behavior.
- Fire control: Use the selected tools carefully, then deploy aircraft water with the Z key.
- Performance tip: A dedicated GPU can improve real-time simulation speed and responsiveness.
- Observation tools: Display modes, velocity vectors, air quality, and humidity reveal changing conditions.
Weather Sandbox wildfire Basics
Weather Sandbox wildfire scenarios are controlled experiments inside a two-dimensional atmospheric simulation. The objective is not simply to ignite an area, but to understand how airflow, moisture, cloud density, and terrain-like placement influence the developing event. A carefully prepared setup makes the result easier to observe and compare.
The simulation supports real-world sounding presets that can be used as atmospheric forcing. These presets provide a practical starting point when you want to examine how different atmospheric conditions affect fire behavior. You can also load a save file, adjust the view, and pause or resume the simulation while studying a developing plume.
Video Highlights:
- Visualizes a wildfire or volcanic plume developing over time.
- Shows how large atmospheric structures can form above intense heat.
- Provides a useful reference for observing smoke, clouds, and vertical motion.
- Helps new users understand why wildfire experiments are best viewed as evolving systems.
| Setup Factor | Recommended Starting Point | Why It Matters |
|---|---|---|
| Vertical resolution | 300 | Produces more realistic simulation behavior |
| Horizontal resolution | Larger values | Allows stronger converging winds and longer-lasting cells |
| Atmospheric forcing | Real-world sounding preset | Provides a structured weather setup |
| View control | Fullscreen with F11 | Gives more room to inspect the simulation |
| Performance | Dedicated GPU preferred | Helps maintain real-time responsiveness |
Change one major variable at a time. If you adjust resolution, forcing, and fire placement together, it becomes harder to identify which change affected the result.
Prepare
Select a sounding preset, choose a suitable resolution, and confirm that the simulation is running smoothly before placing fire.
Observe
Use display modes, velocity vectors, humidity, and cloud-density views to track the atmosphere around the fire.
Control
Pause the simulation when needed, apply tools carefully, and use the aircraft water-drop function to test suppression.
Recommended Wildfire Setup
A reliable wildfire test begins with a stable technical setup. The official 2D Weather Sandbox page recommends a vertical resolution of 300 for realistic results and notes that larger horizontal resolutions can support stronger converging winds. These settings can increase the detail and duration of atmospheric structures, but they may also require more graphics performance.
Before starting a large experiment, use a smaller test scenario to confirm that your browser, controls, and display modes respond correctly. Real-time behavior is primarily GPU dependent, so a dedicated graphics processor may provide a smoother experience than integrated graphics.
| Configuration Area | Practical Choice | Expected Benefit |
|---|---|---|
| Vertical detail | 300 resolution | Better representation of vertical structure |
| Horizontal space | Increase gradually | More room for wind convergence and cell development |
| Browser hardware | Dedicated GPU | Improved real-time performance |
| Screen layout | Fullscreen mode | Clearer view of the simulation area |
| Test method | Small scenario first | Easier troubleshooting before scaling up |
Higher resolution can increase the workload on your system. If the simulation becomes difficult to control, reduce complexity before adding more fire or atmospheric detail.
Choose Atmospheric Forcing
Start with a real-world sounding preset. Treat it as the environmental baseline for the wildfire experiment, and avoid changing multiple atmospheric inputs immediately.
Set Resolution
Use a vertical resolution of 300, then select a horizontal resolution that your system can handle smoothly. Increase horizontal detail only after the basic setup is stable.
Confirm Performance
Enter fullscreen mode with F11 and check whether the simulation responds smoothly to zooming, panning, and tool use.
Create the Scenario
Place the fire with the selected tool, then pause the simulation with the Space Bar if you need time to inspect the starting conditions.
Record the Result
Compare the fire, wind, humidity, and cloud behavior after each controlled change. Saving useful setups makes later comparisons easier.
Reading Fire Weather Conditions
Understanding the atmosphere is more useful than watching the flame alone. Weather Sandbox includes several display options that help explain why a wildfire expands, weakens, or produces strong vertical development. Display modes are assigned to number keys, while dedicated keys expose air quality, humidity, cloud density, velocity vectors, and sounding information.
Use the velocity-vector overlay to identify the direction and strength of moving air. Relative humidity and cloud-density views can help you compare moisture patterns with visible cloud development. The air-quality display provides another way to examine the region affected by smoke and combustion.
| Key or Control | Display or Action | Use During Wildfire Tests |
|---|---|---|
| 1–9 | Display modes | Cycle through available visual interpretations |
| K | Air quality display | Inspect smoke and air-quality changes |
| C | Relative humidity and cloud density | Compare moisture with cloud development |
| Tab | Velocity vectors | Track wind direction and movement |
| G | Sounding graph | Review the selected atmospheric profile |
| Space Bar | Pause or resume | Freeze conditions for closer inspection |
Pause first, inspect the velocity and humidity displays, then resume the simulation. This creates a repeatable rhythm for comparing fire behavior with atmospheric changes.
A useful observation routine has three phases:
- Initial state: Check the fire location, surrounding air movement, humidity, and selected sounding.
- Development: Watch for changes in convergence, vertical motion, smoke distribution, and cloud density.
- Response: Apply suppression or alter the view, then compare the result with the previous state.
Do not rely on a single display. A bright or dense visual effect may be easier to interpret when combined with velocity vectors and the sounding graph. Switching between views also helps distinguish a visual change from a broader atmospheric change.
| Observation Goal | Best Tool | What to Compare |
|---|---|---|
| Wind movement | Velocity vectors | Direction before and after ignition |
| Moisture pattern | Humidity and cloud display | Moisture near smoke and cloud areas |
| Atmospheric profile | Sounding graph | Environmental forcing used in the test |
| Smoke impact | Air-quality display | Distribution around the wildfire |
| Camera tracking | View controls | Same area across different time points |
Fire Suppression and Aircraft Controls
Weather Sandbox includes an aircraft flight mode that can be used to interact with a wildfire scenario. Press A to toggle flight simulator mode. In this mode, the vertical mouse position controls the elevator, while the arrow keys manage throttle. The aircraft can be followed with F, landing gear can be toggled with Shift, and water can be dropped with Z to extinguish fires.
Aircraft suppression works best when planned before the fire becomes difficult to track. Use the camera and view controls to maintain a clear perspective, then approach the affected area with enough control to place the water drop where it matters. The purpose of the exercise is to test interaction between the aircraft, fire, and changing atmosphere rather than to treat the scenario like a fixed target.
| Control | Aircraft Function | Recommended Use |
|---|---|---|
| A | Flight simulator mode | Enter or leave aircraft control |
| Mouse vertical position | Elevator | Manage aircraft pitch |
| Up and Down arrows | Throttle | Adjust aircraft speed |
| F | Follow camera | Keep the aircraft centered |
| Shift | Landing gear | Toggle aircraft gear |
| Z | Drop water | Attempt fire suppression |
| Caps Lock | Autopilot | Let the aircraft maintain automated control |
| / | Engine toggle | Turn the engine on or off |
Use the aircraft follow camera before making a water drop. Maintaining visual awareness makes it easier to judge the drop location and the fire’s movement.
Wildfire Control Checklist:
- Confirm the simulation is responsive before entering flight mode
- Toggle aircraft mode with A and check throttle control
- Use F to follow the aircraft when visibility becomes difficult
- Press Z to drop water over the active fire area
- Pause and inspect air quality, humidity, and velocity after suppression
The aircraft is only one part of the control loop. If the fire changes rapidly, pause with the Space Bar and reposition the camera using the arrow keys. Zooming with the plus and minus keys can help you switch between a broad atmospheric view and a closer look at the affected area.
Troubleshooting and Scenario Planning
Wildfire experiments become easier when the setup is repeatable. Save a promising configuration, then use the same atmospheric forcing and resolution while changing only one factor. This approach is especially helpful when comparing fire placement, horizontal resolution, or suppression timing.
The simulation also includes tools for moving around the scene, changing brush size, and controlling iteration speed. The B key changes brush size while scrolling, and pressing B twice toggles a whole-width brush. The End key enables automatic iterations per second, while Page Up and Page Down adjust the iteration rate.
| Problem | Likely Adjustment | Control or Setting |
|---|---|---|
| Simulation feels slow | Lower complexity or resolution | Reduce horizontal detail |
| Fire is difficult to inspect | Pause and reposition view | Space Bar, arrow keys, V |
| Tool affects too large an area | Reduce brush size | Hold B and scroll |
| Conditions change too quickly | Lower iteration speed | Page Down |
| Need a broader effect | Toggle whole-width brush | Press B twice |
| View becomes confusing | Reset camera position | V |
A dramatic result is not automatically a useful result. Save or document the setup so you can determine whether the behavior can be reproduced under the same conditions.
A structured test plan can use four scenario types:
Baseline
Use one sounding preset, standard vertical detail, and a simple fire placement. Record the initial wind and humidity views.
Resolution Test
Keep the forcing constant while changing horizontal resolution. Compare convergence and the duration of visible cells.
Suppression Test
Start from the same baseline, enter flight mode, and compare results with different water-drop timing.
Display Test
Keep the scenario unchanged while switching between air quality, humidity, cloud density, vectors, and the sounding graph.
Use clear labels for saved files and notes. A useful record includes the sounding preset, resolution, fire placement, suppression timing, and the display modes used for evaluation. This information makes future experiments more efficient without requiring unsupported assumptions about the simulation.
Weather Sandbox wildfire FAQ
The following answers summarize the most useful controls and setup practices for wildfire-focused scenarios.
Q: What resolution is recommended for a realistic wildfire setup?
A vertical resolution of 300 is recommended as a starting point. Larger horizontal resolutions can support stronger converging winds and longer-lasting cells, but they may require more GPU performance.
Q: How do I extinguish a fire with the aircraft?
Toggle flight simulator mode with A, manage the aircraft using the elevator and throttle controls, then press Z to drop water over the fire.
Q: Which displays help explain wildfire behavior?
Velocity vectors show moving air, K opens the air-quality display, C shows relative humidity and cloud density, and G opens the sounding graph.
Q: Why should I use a dedicated GPU?
The simulation's real-time performance is largely GPU dependent. A dedicated GPU may provide smoother interaction, especially when using larger horizontal resolutions.
The strongest wildfire experiments combine a controlled atmospheric setup, readable display modes, careful camera work, and repeatable suppression tests. Start small, compare one change at a time, and scale the scenario only when performance remains stable.