Historical clue formulations

• Smoky tendrils — 2024-03-24
• Puffs — 2022-10-22
• Strands — 2022-06-05
• Cirrus clouds, e.g. — 2017-09-23
• Cirrus clouds, e.g. — 2017-07-09
• Traces of smoke — 2013-02-27
• Cirrus cloud formations — 2009-12-22
• Thin tufts — 2004-11-10
• Thin puffs — 2002-12-07
• Slender traces — 2000-10-29
• Thin strands — 1996-09-28