A yellow weather for rain has been issued for Herefordshire and Monmouthshire.
Forecaster at the Met Office said a band of rain will move east across southern parts of England and Wales during Tuesday morning.
Some of the rain will be heavy, with 15-30 mm of rain falling widely across parts of Herefordshire and Monmouthshire.
The warning will in place from midnight until 1pm on Tuesday.
Person found dead on railway track
Strike at Abergavenny King Henry School parents react
Teachers strike continues at Abergavenny school
Eight-figure sum quoted to fix Ledbury station access
Relief road pledge could put five proposed rail stations at risk