http://ukasf.co.uk/module-Storm/mode-forecast/id-302/ (risk map)
Storm Forecast Issued: 2010-06-12 16:23:00
Valid: 2010-06-13 00:00:00 - 2010-06-13 23:59:00
Regions Affected
Wales, Midlands, SW England, parts of E Anglia & Northern Ireland (all of England, Wales and Northern Ireland are included in the WATCH)
Synopsis
A shallow area of Low pressure moves southeastwards across the United Kingdom on Sunday, dominating the weather.
Behind an increasingly weak eastward-moving cold front, scattered showers and isolated thunderstorms are forecast to develop in the unstable airmass during the afternoon and evening, moving in a predominantly southeasterly direction.
Showers will be fairly quick-moving, but may be accompanied by hail and gusty winds. The showers (and storms) will persist throughout the night across England and Wales with still a risk of electrical activity.