Altitude columns in feet MSL, in the order they appear in the bulletin.
Time the forecast data was based on (UTC).
Altitude above which forecast temperatures are implicitly negative (feet MSL).
OptionalproductAWC product code line (e.g. "FD1US1"), when present.
Original raw bulletin text, preserved verbatim.
Per-station forecast rows in input order.
Start time (UTC, hour + minute) of the forecast usable period, from "FOR USE HHMM-HHMMZ". The day field is always undefined because the FD format omits it.
End time (UTC, hour + minute) of the forecast usable period. The day field is always undefined because the FD format omits it.
Time the forecast becomes valid (UTC).
OptionalwmoWMO bulletin header line (e.g. "FBUS31 KWNO 241359"), when present.
Parsed FD winds-aloft forecast bulletin.
wmoHeaderandproductCodeare optional because bulletins sourced from non-AWC feeds may omit the wire-format preamble lines.