An upper trough is poised to transport a substantial Theta-E airmass, ushering in warm moisture along portions of the English Channel. MLCAPE values are forecasted to locally surpass 1000 J/kg, prompting the development of isolated showers along the upper trough. These showers are expected to progress northwestward at a gradual pace overnight, bringing elevated thunderstorms to parts of southwest England. >30 mm of rain might fall within 6 hours, perhaps causing some localized flooding in places.
You can download the kml file of the convective outlook here
(You can upload the file to windy.com to have the graphic overlay)
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