The lesser of the height above ground or water of the base of the lowest layer of cloud covering more than half the sky or the vertical visibility in a surface-based layer which completely obscures the sky.
The lesser of the height above ground or water of the base of the lowest layer of cloud covering more than half the sky or the vertical visibility in a surface-based layer which completely obscures the sky.
Post Type: glossary Post ID: 61461 Important Lesson: NO