Weather Blog Blast From the Past: Vredefort Crater The world’s oldest and largest known impact structure shows some of the most extreme deformation conditions known on Earth. Read More… About Author OTW Observer See author's posts Post navigation Previous Wimbledon close to its hottest day ever as temperatures soar past 34CNext Tropical Storm Chantal could Develop… Related Stories A Full Moon Checkup Weather Blog A Full Moon Checkup May 26, 2026 An Early “Decoration Day” Celebration Weather Blog An Early “Decoration Day” Celebration May 25, 2026 Tornado Draws a Jagged Line in Mississippi Weather Blog Tornado Draws a Jagged Line in Mississippi May 22, 2026