The Met Office has issued a Weather Warning, with dense fog set to affect Herefordshire overnight.
The warning states:
Fog and freezing fog patches are expected to develop quite widely on Thursday night, with some of these becoming dense in places with very poor visibility. This is most likely to affect parts of central England and east Wales, but other areas are also at risk. Fog is likely to be slow to clear during Friday and may last through the day in some places which may lead to some travel disruption.