Weather whiplash continues in Los Angeles County, where after weeks of dangerously warm and windy conditions, followed by sudden rainfall and small mudslides, the National Weather Service has issued a warning for a new threat — cold overnight temperatures that could pose a risk of hypothermia.

Another new change is the Wind Chill Advisory will be renamed to "Cold Weather Advisory" as shown below with the explanation. The hard freeze watches and warnings will be renamed and consolidated to "Freeze Watch" and "Freeze Warning" as shown below with the explanation.

CHARLESTON, W.Va. — The National Weather Service has posted cold weather advisories and warnings with temperatures expected to plunge below zero in most of the state. The entire state is under a Cold Weather Advisory. The advisories last through Wednesday.

"Re-freezing of snow and sleet melt is expected this evening, as temperatures plummet well below freezing after dark."

In less than a week, Southern California’s weather has gone from unseasonably dry and warm – to wet and now bitterly cold. The National Weather Service says the same low pressure system that brought rain to the region last weekend is “still spinning” and producing overnight low temperatures in the 30s