as Andy says easterly winds are the equivelent of this set up for eastern england and the london area and home counties. They pick up so much moisture from the north sea then dump it overland. These fonts usually fizzle out way before south wales, typically in berkshire or the swindon area. This today is a battlefront scenario that london can only dream of, I used to live in essex, althoughnot strictly english!!, and very occasionally we would do well out of such a battlefront, if it progressed a little further east. Lovin tonight, South wales really needed this!!
This front really has stalle now its not going anywhere fast!!!