Historical clue formulations

• Current events — 2025-01-25
• Surfing hazards — 2023-12-16
• Hazards for offshore swimmers — 2021-03-08
• Dangers for swimmers — 2020-02-15
• Hazards for surfers — 2014-05-21
• Dangerous ocean currents — 2010-07-05
• Lifeguards' dangers — 2002-09-09
• Cause of some disturbances — 2000-09-03