Noctilucent clouds are rare. Noctilucent means “Light Shining ” in Latin. They are made out of ice crystals and are the ragged edge of polar mesospheric clouds. They also are known as night clouds because they only appear after the sun goes down. They are highest clouds in the atmosphere, usually 47 to 53 miles above the earth. Noctilucent clouds only appear in the summer and may be seen only be people between 50 and 70 degrees above and below the equator. In the US that would be very northern Alaska.
Happy Valentine’s Day to everyone from Leah