Severe thunderstorms struck central and eastern regions of the Czech Republic this afternoon, with a second wave expected from Germany later tonight. The Czech Hydrometeorological Institute (ČHMÚ) warns of strong wind gusts and hail potentially exceeding 2cm in diameter. The inclement weather has already prompted the cancellation of two scheduled concerts at the Colours of Ostrava music festival. Authorities are advising caution due to the potential for hazardous conditions caused by the storms. Further disruptions are possible as the storms continue to move across the country. Festival organizers are monitoring the situation closely and will provide updates as needed. Residents in affected areas are urged to secure loose objects and seek shelter indoors.