Thunderstorm Outlook: Wed 27 July

A particularly strong thunderstorm event is expected near the thermal low over northern France this afternoon into tonight. Supercells may be able to develop as the vertical windshear and veering of the winds with height support storm rotation. Large hail and even tornadoes will be possible. These cells may merge into a line of storms with a primary risk of gusts, and this MCS during the night offers a good possibility to generate sprites. More isolated convection is likely over central and southern France. See for a thorough discussion http://www.estofex.org.