You finally reach something of an actual civilization in the city of Sarn.

FORBES: Move up http://i.forbesimg.com t Move down

In Powys, the A490 is closed near the Mid Wales Airport at Welshpool, between the Sarn y Bryn Caled roundabout and Kingswood.

BBC: Flood warnings issued for Wales

Overnight, two crews from Mid and West Wales Fire and Rescue Service have been called to a gorse fire at Sarn Helen, near Lampeter.

BBC: Brecon Beacons' 'worst' grass fires in 30 years

Meanwhile, there will be mobile outreach services in the small communities of Erwood, Gladestry, Llandefaelogfach, Merthyr Cynog, Pantydwr, Dihewyd, Talgarreg, Abermule and Sarn, said the Post Office.

BBC: Post Office closing 11 branches

Then about 20 minutes after that police and fire crews were called to the westbound lane between Junction 36 at Sarn and Junction 37 at Pyle, where a car had gone in to trees.

BBC: M4 south Wales: 11 hurt in four-car crash after hail