UK meteorology

Well, we've just had the shortwave upper trough associated with the approaching cold front move through. It generated a thunderstorm and brief heavy rain. Most areas will, over the next few hours, be into the cooler, drier air behind the cold front as it moves through (albeit possibly bringing another load of showers/storms with it). After the front clears, it will probably cloudier than it often is behind cold fronts, indicating that the atmosphere isn't as dry as often in such cases.
 
Any showers relating to the cold front are reducing in area and heading-out into the North Sea from Lincolnshire. All other area (away from the Western Isles) should stay dry for the rest of the day.
 
Dutton with his view on what is likely to be an unsettled week's weather, with the UK in a pincer tomorrow as one low moves in from the Atlantic through western and north-western parts, and the other moving up from the Continent bringing thundery showers to the south and east:

 
Met Office have a warning in place for southern England as far north as the Midlands for heavy rain:


There's also a rain warning for Northern Ireland.