Try Storm Lab free in your browser, with nothing to install and no account. Make a storm from its ingredients: warm, damp air near the ground, cold air high up, something to lift it, and wind that changes with height. Watch the sky decide what it makes: nothing, a shower, a thunderstorm, hail, a supercell, a tornado. Then send the storm across a town, survey the damage like a weather service team, strengthen the buildings and send it again.