These charts of surface pressure, from analysis (T+0) to the 84-hour forecast (T+84) are produced daily around 0730 UTC.
Low pressure lies between Iceland and the UK, with fronts
marking areas of rain. The isobars show a northwesterly
flow, bringing a cool polar airmass to the UK. Tight
isobars in the North sea, associated with the low
pressure across Scandinavia leads to strong winds here.
Updated: 0730 UTC on Wed 20 Aug 2014