Elsewhere a secondary surface low will run northeastwards across the Celtic and Irish Seas this afternoon, and across northern England early evening before exiting to the North Sea. The strongly-sheared environment will allow line convection to develop once again along the cold front, particularly Wales / SW England second half of the afternoon, extending across the Midlands later in the day. Given some weak CAPE in the vicinity, it is possible a few sporadic lightning strikes may occur with this feature, although the main focus will be squally bursts of rain and strong gusts of wind. Such setups can occasionally produce brief tornadoes, especially given strong shear in the lowest levels and any breaks in the line segments.