Historical clue formulations

• Grows — 2023-04-30
• Puffs — 2015-11-22
• Balloons — 2009-08-18
• Waxes — 2008-09-07
• Potential boat capsizers — 2002-10-13
• Storm warnings at sea — 1997-05-26
• Increases — 1994-05-22