Originally Posted by HighlandPete
More the ice risk.
.... so the frost warning at 3C is just about right..
The Scotsman is right... black ice is the big deal around our parts also.. hit it once on a curve @ 37F, and you'll understand why... it can form at 37 ambient air temp, where the clear sky radiation lowers the road temp to 32-... but that's the nerd part...
The slip slidin' away part we can all understand in the moment.. really bad ASS.. lordie, please forgive me on such a bad pun.