I did experience a very scary, yet strange event last year.
On what I can only describe as an early evening (lightly fading light) of light fog, we were having a good dusting of snow.
In all, one or the other would have produced decent visibility, combined, it was pretty bad.
I'm on the M62 nearing Manchester whilst returning home so I could come to work the next day, all traffic must have been doing around 35mph. Frankly I would have said that was a bit slow, as the conditions were not overkill.
Now I had seen some lightening on the way to Liverpool that day and there was a light layer of snow on the ground, but the sky above Manchester (at least were I was) were refraining from bearing down.
The next thing the hail starts in and a few minutes later, lightening.
The snow was still there, only a little lighter.
The M62 was a car park for about 20 to 25 mins. Once it stopped, we actually realised most cars were bumper to bumper, with very little room between them.
Nobody realised this though, as despite fog lights, you just could seem them and there were little more than a faint glow.
It was indeed a very odd one and something I did not think was possible to be honest.
