Choose a resolution - Higher resolutions provide more detail but significantly impact performance

Horizontal resolution		Cellheight: 40m Sim width: 40 km
Vertical resolution
Simulation height

Move the mouse until you see a terrain you like, then just click to start.

Load Save File:

Example Save Files

Background image

Mountain Uplift Cell at sunset

480 km map with strong Derecho

Three Nice Cells

Mountain Snow Storm

Powerful & Longlasting Cell

Powerful updraft sucking up rain and turning it into hail.

Powerful Hail and Snow Cells

Very nice cell over coastal mountain

Awesome Convergence Cell

Two nice cells in lake valley

Insane CAPE

100 X 100 Test

Tips

Vertical resolution of 300 gives most realistic results
Larger horizontal resolutions allow stronger converging winds to develop, forming more realistic, longer lasting cells
Performance is mostly GPU dependent, GTX 1070 or better recommended for realtime gameplay
If you have a laptop with a dedicated GPU, make sure the browser is actually using it! It's often using the integrated graphics by default
Play in fullscreen mode (F11)

Controls

Mouse

Middle mouse button to drag the simulation area around
Mouse wheel to zoom in and out, Or to change brush size while holding down B
Left mouse button to use selected tool. Hold down Ctrl (command on mac) to perform the inverted action
Touchscreen input is pretty basic for now, will add more controls in the future

Keys

1 - 9	Display Modes
Q - Y	Tools
Left Ctrl	Invert Tool Action
Esc	No Tool, Flashlight
Arrows ◄ ▲ ▼ ►	Move View
+ -	Zoom In / Out
Right Ctrl	Hold For Slower Pan speed
Space Bar	Pause / Resume
Tab	Show / Hide Velocity Vectors
A	Toggle Flight Simulator Mode. Vertical Mouse position controls elevator, Throttle: ▲ ▼
F	Toggle camera following plane
Shift	Toggle Gear
CapsLk	Autopilot
.	Brakes
D	Show / Hide Droplets
X	Toggle follow droplet
G	Show / Hide Sounding Graph
N	Show / Hide Weather Stations
M	Add / Remove Weather Stations
H	Show / Hide GUI
V	Reset View
B	Hold To Change Brush Size By Scrolling
B x 2	Toggle Whole Width Brush
L	Reload From Save File
Home	1 Iteration/sec
End	Auto Iterations/sec
PgUp	Increase Iterations/sec
PgDn	Decrease Iterations/sec

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If you love my project and want to support its future development, please consider supporting me on patreon
Every small amount helps! Thank you!

By Niels Daemen