500px provided description: For me this was best structure in 2013 season. That bright turquoise color was really awesome. This MCS was classified as derecho and caused many minor damage over Czech lands (damage on roofs, fallen trees). One of other chasers, which has stage 3-5 km near my location has photo of hailstones with 3 cm in diameter :) I was on edge of whole system near Slany (Stredocesky region), I measured just 10,1 m/s on wind gust with my Windmaster, but many Czech weather stations measured wind speed over 25 m/s. [#sky ,#light ,#clouds ,#rain ,#summer ,#lightning ,#cloud ,#weather ,#storm ,#thunderstorm ,#czech ,#hail]