These charts of surface pressure, from analysis (T+0) to the 84-hour forecast (T+84) are produced daily around 0730 UTC.
Met Office view of 0000 UTC surface analysis
A fairly deep area of low pressure is situated to the west of Biscay and is expected to move northeastwards today. It's associated fronts will bring rain to southwest England and south Wales. Across the rest of the UK a slack pressure pattern dominates.
Updated: 0730 on Fri 4 Jul 2008