An unscheduled planning forecast describing conditions expected to begin within 4 to 12 hours which may impact the flow of air traffic in a specific center’s (ARTCC) area.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
An unscheduled planning forecast describing conditions expected to begin within 4 to 12 hours which may impact the flow of air traffic in a specific center’s (ARTCC) area.
Source FAA Pilot/Controller Glossary · checked 2026-08-25