Historical clue formulations

• More urgent — 2020-11-06
• More grim — 2009-09-28
• More terrible — 2005-03-10
• Worse — 2004-02-01
• Of greater concern — 2000-02-18
• More terrible — 1999-04-17
• More calamitous — 1996-07-19
• More extreme — 1996-07-11
• More ominous — 1995-07-05
• More critical — 1995-05-25
• More extreme — 1994-03-01