... Extreme N-France and parts of Belgium ...
A short time frame for organized thunderstorm arises over that region from about 14-19Z. Boundary layer moisture remains satisfying as mid-levels cool down rapidly. Some low-end instability is forecast and ECWMF/GFS showed initiation for the past few runs. Deep convection is possible and DLS near 20m/s combined with 15-20m/s at 850hPa point to a severe wind gust/isolated large hail threat. Thunderstorms decay after sunset.
A short time frame for organized thunderstorm arises over that region from about 14-19Z. Boundary layer moisture remains satisfying as mid-levels cool down rapidly. Some low-end instability is forecast and ECWMF/GFS showed initiation for the past few runs. Deep convection is possible and DLS near 20m/s combined with 15-20m/s at 850hPa point to a severe wind gust/isolated large hail threat. Thunderstorms decay after sunset.
