Alerts have an dissonant state patch the defined circumstance is satisfied. New alerts are triggered in this state, and they likewise put to death the notifications attached to the stream. These alerts commonly require an state on your side.
Blue alert | Memory Alpha | FANDOM powered by Wikia
Blue alert (also encrypt blue or good health blue) was an alert sign state on Starfleet vessels and outposts which was called for in surpassing situations, including, but not narrow to, environmental hazards to the crew, main world power failure, docking and integrity maneuvers, and landing protocols, for ships with the capability. The construction light on the refitted USS Enterprise sour downcast when it prepared to enter the stuff Spacedock in 2285. () In 2367, the issue of an imminent environmental systems failure or holdup resulted in blue alert being titled in the affected areas in ordination to help affected personnel flight or safeguard their lives.