Help with particles (instant snowy weather)

In my game I have a winter level that has snowing in it using particles. How can I make it so when the layout starts it is already snowing instead of it starting to snow. I know they have this functionality in unity so I thought there might be a way for us C3 users to do the same thing?

Thanks!

An easy solution that comes to my mind is to use an object to fade in the level and use the time to time scale the particles and fill the screen with snowflakes:

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An easy solution that comes to my mind is to use an object to fade in the level and use the time to time scale the particles and fill the screen with snowflakes:

.

Thanks! Quick and easy solution and it works great! :)