Historical clue formulations

• Low-level clouds — 2026-05-09
• Low-altitude clouds — 2024-06-26
• Overcast clouds — 2022-12-17
• Low-altitude clouds — 2021-05-10
• Low-hanging clouds — 2020-05-31
• Certain clouds — 2020-02-02
• Low-hanging clouds — 2019-05-16
• Sheetlike gray clouds — 2018-05-07
• Some low clouds — 2017-12-08
• Low-altitude clouds — 2016-10-26
• Drizzling clouds — 2016-06-04
• Some clouds — 2013-02-23
• Layers of clouds — 2012-11-04
• Some clouds — 2011-03-06
• Low clouds — 2010-04-25
• Low clouds — 2009-08-30
• Low clouds — 2006-06-25
• Some clouds — 1997-12-28