| 2026-04-23 | On guard |
| 2026-03-01 | [Mayday! Mayday!] |
| 2026-02-18 | On guard |
| 2025-10-20 | Message often accompanied by an exclamation point in a triangle |
| 2025-08-13 | Warn |
| 2025-04-25 | Certain phone pop-up |
| 2025-04-05 | Having ears pricked |
| 2024-10-21 | Breaking news notification |
| 2024-09-25 | Bright-eyed |
| 2024-09-04 | On guard |
| 2024-07-28 | "Danger! Danger!" |
| 2024-03-13 | Wide-awake |
| 2023-06-26 | Cellphone notification |
| 2023-03-12 | Notification |
| 2023-02-20 | On the ball |
| 2023-01-01 | Attentive |
| 2022-11-27 | With it |
| 2022-11-02 | Notification |
| 2022-10-13 | All ears |
| 2022-10-12 | Smartphone notification |
| 2022-07-25 | Phone notification |
| 2022-07-03 | Give a heads-up |
| 2022-03-04 | A red one is concerning |
| 2021-08-23 | Opposite of drowsy |
| 2021-05-29 | Email ___ |
| 2021-05-12 | Well-caffeinated, perhaps |
| 2021-05-07 | Smartphone pop-up |
| 2021-03-30 | "___ the media!" |
| 2021-02-24 | Emergency notification |
| 2021-01-04 | Vigilant |
| 2020-11-10 | On the qui vive |
| 2020-07-31 | Not sleepy |
| 2020-07-14 | Wide-eyed |
| 2020-07-05 | Heads-up |
| 2020-05-07 | Argus-eyed |
| 2020-02-25 | Paying attention |
| 2020-02-03 | Warning |
| 2019-10-25 | Bulletin |
| 2019-10-02 | Having perked-up ears |
| 2019-07-21 | On the qui vive |
| 2018-12-05 | One may be red |
| 2018-10-31 | Tip off |
| 2018-10-05 | "Fore!," for one |
| 2018-04-14 | Reason to check one's phone |
| 2018-03-24 | Text ___ |
| 2018-01-25 | On the lookout |
| 2017-12-15 | Having ears cocked |
| 2017-12-09 | "Incoming!," e.g. |
| 2016-09-29 | Ding or buzz, maybe |
| 2016-08-02 | Incoming text ding, e.g. |
| 2016-04-08 | Bright-eyed |
| 2016-01-05 | It can be red or amber |
| 2015-11-01 | Pop-up, sometimes |
| 2015-10-24 | See 42-Down |
| 2015-08-30 | Not nodding |
| 2015-06-21 | Fully caffeinated, say |
| 2015-06-09 | A serious one might be red |
| 2015-04-29 | Red flag, maybe |
| 2015-01-24 | News ___ |
| 2014-09-18 | Sound of an incoming text, e.g. |
| 2014-06-15 | Warning |
| 2014-04-24 | On the lookout |
| 2014-04-21 | Warning |
| 2014-04-06 | Fully attentive |
| 2014-03-06 | Quick |
| 2014-02-28 | Like a good lookout |
| 2013-08-24 | Like prairie dogs, notably |
| 2013-08-23 | All-points bulletin, e.g. |
| 2012-07-30 | Having pricked ears |
| 2011-09-28 | Argus-eyed |
| 2011-06-05 | Bit of Weather Channel news |
| 2010-11-22 | Bright-eyed and bushy-tailed |
| 2010-11-19 | It's high when it's red |
| 2010-10-11 | Warning |
| 2010-04-13 | On one's toes |
| 2010-03-05 | Caffeinated? |
| 2010-01-24 | Like good guards |
| 2009-11-17 | On the ball |
| 2009-10-03 | Not out of it |
| 2009-08-06 | Ready |
| 2009-01-23 | Word often preceded by a color |
| 2009-01-10 | Bushy-tailed? |
| 2008-12-31 | "Heads up!," e.g. |
| 2008-10-08 | On one's toes |
| 2008-07-09 | Open-eyed |
| 2008-05-10 | Not nodding |
| 2007-06-14 | Heads-up |
| 2007-04-19 | Tip off |
| 2006-09-25 | Vigilant |
| 2006-07-22 | Red light |
| 2006-06-25 | Heads-up |
| 2006-05-28 | Yellow flag |
| 2006-03-01 | At the ready |
| 2006-02-13 | Watchful |
| 2005-12-18 | Sharp |
| 2005-11-21 | Warn |
| 2005-04-19 | Red flag |
| 2004-10-28 | Tip off |
| 2004-09-25 | Listening |
| 2004-08-09 | Notify |
| 2004-07-30 | "Look out below!," e.g. |
| 2004-03-08 | Red flag, e.g. |
| 2004-02-10 | Heads-up |
| 2003-12-15 | Warn |
| 2003-11-18 | On the ball |
| 2003-10-15 | Heads-up |
| 2003-10-12 | Whistle, maybe |
| 2003-08-31 | Argus-eyed |
| 2003-07-31 | Ready to jump, perhaps |
| 2003-07-30 | Wide-awake |
| 2003-05-07 | It may be red |
| 2002-08-21 | On the ball |
| 2002-07-08 | Heads-up |
| 2002-05-23 | *Siren ... danger ... perked up |
| 2002-02-19 | On one's toes |
| 2001-10-11 | Siren |
| 2001-08-31 | Ready to react, perhaps |
| 2001-07-21 | Like Argus |
| 2001-06-18 | On one's toes |
| 2001-05-15 | On the ball |
| 2001-03-18 | Whistle, for one |
| 2000-11-12 | Argus-eyed |
| 2000-11-07 | On one's toes |
| 2000-10-05 | Red flag |
| 2000-10-04 | Argus-eyed |
| 2000-08-26 | Yellow ___ |
| 2000-08-17 | On the ball |
| 2000-07-30 | With it |
| 2000-03-06 | On the ball |
| 1999-12-30 | Argus-eyed |
| 1999-12-16 | Heads-up |
| 1999-09-01 | "Heads up!," e.g. |
| 1999-08-18 | Heads up |
| 1999-07-17 | Like a good guard |
| 1999-06-06 | Whistle, maybe |
| 1999-05-17 | On the ball |
| 1999-05-03 | Notify of danger |
| 1999-03-02 | Ready for anything |
| 1999-02-22 | Open-eyed |
| 1999-01-17 | Red flag |
| 1998-12-29 | On the qui vive |
| 1998-07-10 | Tornado siren, e.g. |
| 1998-05-23 | Ready |
| 1998-05-04 | Wide-eyed |
| 1998-02-21 | Tip off |
| 1998-01-11 | Red ___ |
| 1996-12-30 | With ears pricked |
| 1996-08-18 | Storm posting |
| 1996-08-14 | On one's toes |
| 1996-07-21 | Sharp |
| 1996-01-28 | Sharp |
| 1996-01-26 | Tip off |
| 1995-12-05 | On the ball |
| 1995-11-27 | Argus-eyed |
| 1995-11-06 | Danger signal |
| 1995-08-28 | Open-eyed |
| 1995-08-13 | All-points bulletin |
| 1995-06-26 | All ears |
| 1995-05-07 | Argus-eyed |
| 1995-04-20 | On the ball |
| 1995-03-12 | With it |
| 1995-03-05 | Observant |
| 1995-02-10 | With ears pricked |
| 1995-01-15 | All points bulletin |
| 1995-01-10 | On the qui vive |
| 1994-06-17 | Highly vigilant |
| 1994-03-02 | Argus-eyed |
| 1994-01-27 | Bright-eyed and bushy-tailed |