Another area of interest is along the south coast, where a minor shortwave sliding eastwards aloft may, in combination with a sea breeze convergence, aid the development of scattered heavy showers here too. However, the air aloft will be very dry, and so convection here may struggle to be sustained and will be heavily reliant on sufficient moisture pooling along the seabreeze CZ (dewpoints may reach 6C here vs near/sub-zero further north closer to the M4 corridor). That said, some impressively steep mid-level lapse rates towards SE England with some reasonable CAPE and tops near 20,000ft could be sufficient for a few sporadic lightning strikes. As such, a couple of low-end SLGTs have been introduced, but southern England is most favoured for some lightning activity.

Showers will slowly ease in intensity and coverage through the evening and night hours, however there may be an uptick in activity across parts of Wales for a time, and perhaps also into SW England and portions of the English Channel.