Synoptic Pattern favoring
Click here for a depiction of the Synoptic
Scale Pattern which would alert a forecaster
to the existence of a Gravity Wave.
A diffluent region bounded by a 300 MB Ridge Axis to the east and a
300 MB trough axis to the west
Bounded by inflection axis to the southwest
A surface Warm front to the south of the region favoring Gravity Waves
An upper level Jet streak propagating out of the mean trough and
toward the downstream ridge axis away from the geostrophic jet max and
nearing the inflection axis
The propagation of the jet streak downstream of the geostrophic wind
maximum at the base of the trough produces divergent ageostrophic flow
which is in an unbalanced state, where the cross contour flow is directed
in the opposite sense one would normally see in quasi-geostrophic theory.
The flow is directed toward lower heights in the exit region of the geosptrophic