So long since I used reason I cant remember how clean its noise generators are.
Im sure thor probably has a decent generator in it. Now that I have listened to it - it was probably just a standard sweep/uplift sample from a library.
To make it - sweep two filters quite broadly spaced, LP with a bit of resonance - with reason synth filters, maybe 1/4 reso. the other will be an HP filter with no resonance. Dont start sweeping the HP filter up from zero until the LP cutoff is past 600Hz or so (ie a bit past the mid point).
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