Little-known iPhone setting warns you JUST before snow starts to avoid weather chaos – switch it on now

SNOW has swept across the UK today leaving chaotic conditions for many – and more is forecast to land this week.

The chilly weather has led to some treacherous conditions on roads, as well as train cancellations and school closures.

AlamyParts of the UK are braced for more snowy conditions[/caption] AlamyA yellow weather warning is in place for some areas[/caption] Jamie Harris / The SunSetting takes only a few seconds to set-up[/caption]

Three yellow weather warnings...