Thanks for the revision, Boac
Still I think it quite unlikely to see rain "streaming" around the windshield. Characteristical for supercooled water is that it freezes immediatly when it touches an object (the seed). Hence you cannot see if you have supercooled precipitation around you.
Anyway, all these incidents and one accident makes me think that with the change of earth's climate, we encounter stronger and different weather effects. I also count the BA 038 accident to these series, because they had unusual cold temperatures over Russia and the Scandies. Maybe we as pilots have to modify the way we look at weather.
Dani