sky hdri 360 panorama with dark clouds before storm in seamless equirectangular projection for use in 3d graphics as skydome or

equirectangular thunderstorm replacement environment development projection background cloudscape hemisphere panoramas spherical emergency hurricane rainstorm windstorm panorama seamless graphics backdrop overcast template skydome climate cyclone pattern thunder tornado clouds degree aerial danger skybox zenith storm drone black patch skies front hdri dark edit rain dome game sky 360 use hdr map sun