- Weather Sandbox v3 uses atmospheric simulation tools, presets, displays, and interactive brushes.
- Recommended setup: Use vertical resolution 300 for a more realistic result and enable the dedicated GPU.
- Core controls: Drag with the middle mouse button, zoom with the wheel, and pause with Space.
- Best workflow: Load a real-world sounding, adjust resolution, inspect display modes, then experiment carefully.
- Advanced tools: Flight mode, fire suppression, weather stations, droplets, and velocity vectors expand the simulation.
Weather Sandbox v3 Setup and Simulation Basics
Weather Sandbox v3 is an interactive 2D atmospheric simulation built around real-world sounding presets, adjustable resolution, visual data displays, and direct user tools. The main objective is not traditional character progression. Instead, you shape and observe weather systems by changing the simulation view, selecting tools, and studying how air, moisture, clouds, wind, and other elements respond.
The simulator includes a preset selector for choosing a real-world sounding as the forcing data. This gives each session a starting atmospheric profile rather than requiring every condition to be created manually. You can then load a save file, change the view, and use the available tools to test different conditions.
The official 2D Weather Sandbox page is the primary reference for launching the simulation and reviewing its current controls.
Preset-Based Start
Select a real-world sounding to establish the initial atmospheric forcing for the simulation.
Resolution Tuning
Vertical resolution of 300 is recommended for more realistic results, while larger horizontal resolutions can support stronger converging winds.
GPU Performance
Simulation performance is mainly GPU-dependent. A GTX 1070 or better is recommended for real-time operation.
| Setup Area | Recommended Choice | Why It Matters |
|---|---|---|
| Vertical resolution | 300 | Produces the most realistic results according to the simulator tips. |
| Horizontal resolution | Larger values when practical | Allows stronger converging winds and longer-lasting cells. |
| Graphics hardware | Dedicated GPU | Helps maintain smoother real-time simulation performance. |
| Display mode | Fullscreen with F11 | Gives the simulation more usable screen space. |
| Starting data | Real-world sounding preset | Provides atmospheric forcing for the initial scenario. |
Start with the recommended vertical resolution before increasing other values. This creates a reliable baseline for comparing changes without immediately placing unnecessary strain on your hardware.
Controls, Display Modes, and Camera Movement
The control scheme combines mouse actions, keyboard shortcuts, and tool selection. Learning the camera commands first makes every later experiment easier because you can move around the simulation without accidentally changing atmospheric conditions.
Use the middle mouse button to drag the simulation area. The mouse wheel controls zoom, or changes brush size while you hold B. The left mouse button activates the selected tool, while holding Ctrl or Command performs the inverted action where supported.
The number keys from 1 through 9 change display modes. Additional visual overlays include air quality, relative humidity, cloud density, velocity vectors, droplets, weather stations, and the sounding graph.
Center the Simulation
Use the middle mouse button to drag the view. Press V if you need to reset the camera to its default position.
Adjust the View
Use the mouse wheel or the plus and minus keys to zoom. Hold Right Ctrl for slower, more precise panning.
Select a Tool
Choose a tool with the QWERTYUIOP, bracket, or backslash keys, then use the left mouse button inside the simulation.
Inspect Data
Press number keys for display modes, K for air quality, C for relative humidity and cloud density, and G for the sounding graph.
Pause and Compare
Press Space to pause or resume. Compare the same area under different display modes before making another change.
| Action | Input | Practical Use |
|---|---|---|
| Drag view | Middle mouse button | Move across the simulation area. |
| Zoom | Mouse wheel, plus, minus | Inspect large systems or local details. |
| Change brush size | Hold B and scroll | Adjust tool coverage before painting conditions. |
| Invert tool action | Ctrl or Command | Apply the opposite behavior when supported. |
| Pause or resume | Space | Freeze a state for closer inspection. |
| Reset view | V | Return the camera to its default position. |
| Hide interface | H | Create a cleaner simulation view. |
The tool keys are densely grouped across the keyboard. Confirm the selected tool before clicking, especially when using a large brush or working near a developing cell.
Weather Tools, Displays, and Realism Tips
A strong Weather Sandbox v3 session depends on reading the simulation rather than changing several variables at once. Display modes help separate visual appearance from measurable conditions. For example, cloud density and relative humidity can explain why an area is developing, while velocity vectors reveal the direction and strength of movement.
The simulator provides several ways to examine the atmosphere:
- Air quality display: Use K to inspect air-quality information.
- Humidity and cloud density: Use C to view moisture-related conditions.
- Velocity vectors: Use Tab to show or hide movement indicators.
- Sounding graph: Use G to inspect the active sounding information.
- Weather stations: Use N to display stations and M to add or remove them.
- Droplets: Use D to show or hide droplets, and X to follow a droplet.
Larger horizontal resolutions can encourage stronger converging winds and cells that last longer. However, higher resolution also increases the workload on the system, so it is better to increase settings gradually and compare behavior after each change.
| Display or Tool | Shortcut | Best Use |
|---|---|---|
| Air quality | K | Examine air-quality conditions across the simulation. |
| Humidity and cloud density | C | Study moisture distribution and cloud development. |
| Velocity vectors | Tab | Track wind direction and converging flow. |
| Sounding graph | G | Review the atmospheric profile used by the scenario. |
| Weather stations | N / M | View stations or add and remove observation points. |
| Droplets | D / X | Show droplets or follow an individual droplet. |
| GUI visibility | H | Hide or restore the interface. |
Observe
Pause the simulation and inspect one display mode before making a new change.
Compare
Switch between humidity, cloud density, and velocity vectors to connect visible effects with atmospheric movement.
Adjust
Change brush size and resolution in small increments rather than applying several large changes at once.
Record
Use save files and repeated presets to compare how different starting conditions evolve.
For more convincing atmospheric behavior, combine vertical resolution 300 with a larger horizontal resolution when your hardware can sustain it. Watch performance while testing, then keep the highest stable setting.
Flight Simulator Mode, Fires, and Special Controls
Weather Sandbox v3 also includes a flight simulator mode that lets you interact with the atmospheric field from an aircraft perspective. Press A to enable the mode. The vertical mouse position controls the elevator, while the up and down arrow keys control throttle. F toggles camera following, Shift toggles landing gear, and Caps Lock enables autopilot.
The aircraft can also interact with fires. Press Z to drop water from the airplane and attempt to extinguish fire areas. This creates a useful practical scenario: observe the atmosphere, locate a fire, approach the target, and use the aircraft controls to apply water while maintaining control.
Several engine and aircraft controls are available through shortcuts:
| Feature | Shortcut | Function |
|---|---|---|
| Flight simulator mode | A | Enter or leave aircraft interaction mode. |
| Elevator control | Vertical mouse position | Adjust aircraft pitch. |
| Throttle | Up and down arrows | Increase or decrease throttle. |
| Camera follow | F | Toggle camera tracking of the plane. |
| Landing gear | Shift | Toggle the aircraft gear. |
| Autopilot | Caps Lock | Enable or disable autopilot. |
| Water drop | Z | Release water to extinguish fires. |
| Brakes | Period | Apply aircraft brakes. |
| Engine | Slash | Toggle the engine. |
A practical aircraft session should begin with the camera and view already positioned. If the camera is following the plane, disable follow mode when you need to inspect a separate region. Autopilot can help stabilize travel, but manual control is useful when positioning the aircraft for a targeted water drop.
Treat flight mode as a separate experiment from atmospheric editing. Establish the weather state first, then activate the aircraft so you can better identify whether a change comes from the environment or from your own actions.
Recommended Workflow and Progress Checklist
The most reliable workflow is built around controlled observation. Begin with a known preset, confirm the resolution, inspect the initial displays, and only then introduce tools or aircraft interactions. This approach makes it easier to understand the cause of each change.
Load a Known Scenario
Choose a real-world sounding preset or load a save file. Avoid changing multiple starting conditions before observing the initial state.
Set the Resolution
Use vertical resolution 300 as the baseline. Increase horizontal resolution only if the simulation remains responsive.
Read the Atmosphere
Check the sounding graph, humidity and cloud-density display, and velocity vectors to understand the starting conditions.
Apply One Experiment
Select one tool, use a controlled brush size, and pause periodically to compare the resulting behavior.
Add Advanced Interaction
Try weather stations, droplets, flight mode, or fire suppression after the basic atmospheric pattern is clear.
Recommended Session Checklist:
- Choose a real-world sounding or load a save file
- Set vertical resolution to 300
- Confirm the browser is using the dedicated GPU
- Inspect humidity, cloud density, and velocity vectors
- Pause and compare the simulation after each major change
| Session Phase | Main Objective | Useful Controls |
|---|---|---|
| Initial setup | Establish a repeatable scenario | Preset selector, save file loader |
| Camera preparation | Create a clear working view | Middle mouse, V, plus, minus |
| Atmospheric reading | Understand the current state | K, C, Tab, G |
| Controlled editing | Test one variable at a time | Tool keys, left mouse, B |
| Advanced interaction | Explore aircraft and observation tools | A, Z, N, M, D, X |
| Review | Compare the resulting behavior | Space, display modes, save file tools |
Use pause-and-compare cycles. A short observation after each adjustment is more informative than allowing several unrelated edits to overlap in the same simulation state.
Performance, Troubleshooting, and FAQ
Performance in the simulator is mostly GPU-dependent. If the simulation feels slow, first confirm that the browser is using a dedicated GPU instead of integrated graphics. Laptop users should check the system’s graphics preference because browsers may select integrated hardware by default.
Fullscreen mode can improve the working experience by giving the simulation more room. Press F11 to toggle fullscreen. If you need to reduce workload, lower resolution or use a smaller brush before abandoning a scenario. The right balance depends on the complexity of the current atmospheric field and the hardware available.
Q: What is the recommended vertical resolution in Weather Sandbox v3?
A vertical resolution of 300 is recommended for the most realistic results. You can adjust horizontal resolution separately when your hardware can maintain responsive performance.
Q: Why is Weather Sandbox v3 running slowly on my laptop?
Performance is mainly GPU-dependent. Check whether the browser is using the dedicated GPU rather than integrated graphics, then consider reducing resolution or brush size.
Q: How do I show humidity and cloud density?
Press C to toggle the relative humidity and cloud density display. You can compare it with velocity vectors by pressing Tab.
Q: How do I use the aircraft to fight fires?
Press A to enter flight simulator mode, use the aircraft controls to position the plane, and press Z to drop water over a fire area.
| Problem | Likely Cause | Recommended Check |
|---|---|---|
| Low simulation performance | Integrated graphics or high resolution | Confirm dedicated GPU use and lower settings gradually. |
| View feels difficult to navigate | Camera position or zoom level | Use middle-mouse dragging, V, and the plus or minus keys. |
| Tool produces an unexpected result | Wrong tool or inverted action | Check the selected key and whether Ctrl or Command is held. |
| Aircraft is hard to control | Camera or throttle setting | Toggle F, adjust throttle, and use autopilot when appropriate. |
| Information is difficult to interpret | Too many overlays active | Hide unnecessary displays and inspect one data layer at a time. |
Do not judge a resolution change only by visual quality. Check responsiveness, camera movement, and the stability of the atmospheric field before deciding whether the setting is practical.