An elongated cloud band, visually similar to a roll cloud , usually appearing in the morning hours, when the atmosphere is relatively stable. Morning glories result from perturbations related to gravitational waves in a stable boundary layer . They are similar to ripples on a water surface; several parallel morning glories often can be seen propagating in the same direction.
MORNING GLORY
Meaning of MORNING GLORY in English
A comprehensive English glossary of weather. Полный английский глоссарий погоды. 2012