Historical clue formulations

• Foreshadowed — 2018-02-02
• Forecast — 2015-01-23
• Was an omen of — 2013-01-20
• Portended — 2008-06-18
• Foreshadowed — 2004-08-19
• Foreshadowed — 1998-08-07
• Augured — 1994-09-15