Herts Police is advising motorists of the dangers of freezing ice and snow across the county this evening.
In true December fashion the weather outside was indeed frightful yesterday as heavy snow blanketed North Herts and South Cambs.
Herts Police is urging drivers not to ignore road closure signs after reports of motorists getting stuck on roads that have been closed for safety reasons.
Great Northern trains are disrupted this morning due to a power cut and overrunning engineering works.
The Met Office has issued a yellow weather warning for Hertfordshire as heavy snowfall continues in the county.