Mast alerts are for people who need to know when a half-staff order is active or scheduled for their selected location.
Alerts can help schools, city offices, public buildings, businesses, veterans groups, civic organizations, and anyone responsible for a flag display. They are also useful for people who simply want to understand why flags are lowered.
Mast can support browser, email, and SMS-style notification flows. Availability may vary while the service is being improved, but the goal is the same: short, source-backed notices for the location you care about.
Always check the source when the order affects a formal display, ceremony, or public communication. Alerts summarize the status; the official notice provides the exact scope and language.
Some notices are published before the half-staff period begins. Mast may show or notify about a scheduled order so you can plan ahead, especially when the display starts at sunrise the next day.
Mast is designed to make source-backed status easier to notice, not to replace official guidance. Treat alerts as a practical reminder and use source links for final confirmation.