Historical clue formulations

• Light that goes up when things are going down? — 2025-10-18
• Distress signal — 2024-03-03
• Emergency signal — 2023-11-29
• Distress signal device — 2023-10-16
• Signal for help — 2020-07-31
• Lighted distress signal — 2020-05-19
• Certain S O S — 2018-08-09
• Aid for a search-and-rescue team — 2018-03-22
• Widen, as jeans legs — 2017-09-15
• Visible S O S — 2015-11-01
• Roadside attention-getter — 2015-01-21
• Signal light — 2014-08-05
• Accident marker — 2013-07-28
• Certain S O S — 2012-11-18
• Solar phenomenon — 2009-08-17
• Airborne signal — 2009-04-06
• S O S signal — 2008-07-29
• Distress signal shot into the air — 2007-10-22
• "Accident ahead" indicator — 2007-05-02
• Distress signal — 2007-04-09
• Blaze — 2006-10-01
• Emergency signal — 2006-06-13
• Marooned person's signal — 2004-11-22
• Solar event — 2004-11-21
• "Breakdown ahead" warning — 2003-07-14
• Bell-bottom feature — 2003-06-15
• Emergency equipment — 2003-04-20
• Stranded motorist's S O S — 2003-03-25
• Emergency light — 2002-08-19
• Boater's S O S — 2002-04-03
• Car trunk item, maybe — 2001-01-14
• Broken-down motorist's signal — 1998-10-13
• Alerting light — 1998-08-26
• Warning fire — 1998-04-15
• Distress signal — 1997-03-17
• Road hazard warning — 1996-05-21
• Broaden — 1995-10-15
• Distress signal — 1995-02-08
• Get wider — 1994-08-25
• Distress signal — 1994-08-07