From Environment Agency:

Flooding is expected – immediate action required

River levels are forecast to rise at the Bishops Frome river gauge as a result of heavy rainfall. Consequently, flooding (of property) is imminent. We expect flooding to affect properties off the A4103 may start to be impacted by flooding. We expect river levels to rise until 04:00 on 24/12/20. We are closely monitoring the situation. Please avoid contact with flood water and plan driving routes to avoid low lying roads near rivers, which may be flooded. This message will be updated tomorrow 24/12/20 by 18:00, or as the situation changes.