Subtle impulses running northwestwards in the strong southeasterly flow aloft will aid the development of elevated thunderstorms at various times over the Atlantic and Celtic Sea through this forecast period. Most activity will be offshore to the west and south of Ireland, but may drift over southwestern parts of Munster - primarily during Thursday morning. The strongest cells may produce some hail (along with heavy rain). Some uncertainty exists over how quickly the steering flow will veer more southerly, but elevated thunderstorms could return to SW Ireland during the early hours of Friday (but low confidence at present, with most NWP guidance generally keeping this round of activity offshore).