A complex area of low pressure over the mid-Atlantic early this week is expected to move towards the UK whilst deepening, but confidence in the details of its track and intensity as it crosses the UK remains fairly low. Despite these uncertainties, there is at least a medium likelihood that an extensive, and in places heavy swathe of rain will move into southwestern Britain during Wednesday evening and spread quickly northeast, with totals by early Thursday morning of widely 20-30mm, and for some places 30-50mm. There is a small chance a few places could exceed this, most likely over North Devon and Cornwall and more generally in the east of the highlighted area. In association with the rain, conditions are expected to turn windy with a chance of gales, initially along southern and eastern coasts, but more widely across southern Britain during Thursday daytime. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings.