Originally Posted by
Lagoon
What does it mean when METAR is "Indefinite ceiling with vertical visibility of 700 feet AGL"?
More specifically, what weather phenomena or conditions cause this to happen?
Thanks!
It simply means VV007. ‘Indefinite ceiling’ is part of the official definition of VV—there is no definite, defined ceiling...but your visibility in the vertical is 700ft.
When does VV come into play? Usually with fog. Fog is a cloud that touches the ground, so technically you’re in the cloud, so the ceiling can’t be above you, right? So instead of a ceiling, they say how far up you can see from the ground (vertical vis).
Curious...Where’d you get that from? Is it a decoded METAR?