It's hurricane season on an unnamed exoplanet. This planet follows a complex orbit around a double star system, as well as being in a nebula of glowing gas. There aren't just four seasons on this world, but an intricate succession of not only water weather and changes in radiation levels as well. The planet is entering into a tropical phase in this picture, and you can see a large cyclonic system moving through the heavy atmosphere. Any life which would evolve here would be very different from life back on Earth. The title is "Tropic of Capricorn," referring to a region of Earth's southern hemisphere.
"Tropic of Capricorn" is acrylic on illustration board, 10" x 7", November 1991.