Synoptic Pattern favoring Gravity Waves

• 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 wind maximum.

Click here for a depiction of the Synoptic Scale Pattern which would alert a forecaster to the existence of a Gravity Wave.