G'Day TMPFFISCH,
I am refering to the ARFOR SIGMETS, although for a more western area a typical example
WSAU21 APRF 042152
YMMM SIGMET PH02 VALID 042200/050200 YPRF-
YMMM MELBOURNE FIR SEV TURB FCST WI S4100E11200 - S3600E11200 -
S3500E11800 - S3500E12000 - S3700E12000 - S4100E11700 - S4100E 11200
BLW A050 MOV NE 25KTS INTSF
STS:REV SIGMET PH01 041805/042200
This is a very broad area where if you enter... you run the risk of losing control of your aircraft.
Capt Fathom, good question. Are you obliged to inform passengers of the forecast conditions?
"ladies and gentleman, thank-you for chosing to fly with xxx air, please ensure your belts are buckled firmly low and tight 'round you hips because SEVERE turbulence has been forecast for our departure."
" Please don't be alarmed, we at xxx air fly through these conditions daily
. Please swipe your credit card..." and so it goes.
Or... "Mr Stein, nice to see you today Sir, would you like to postpone the business meeting in Hong Kong today because we run the risk of encountering forecast SEVERE turbulence during our flight from Sydney today?" - "Sure Captain, let's have a beer today instead".