gray sky with rain storm clouds. seamless hdri panorama 360 degrees angle view with zenith for use in 3d graphics or game

360 aerial autumn background cloud clouds cloudscape cloudy cumulus degree degrees dome environment equirectangular ground hdr hdri hemisphere horizon map mercator panorama panoramic pattern photo projection rain reality semisphere skies sky skybox skydome skyline skyscape space spherical storm template texture view virtual white wide without zenith