Jul 12, 2022
A broad upper level high centered near the 4-Corners region extended to the east coast north of Florida. The eastern portion of the ridge rapidly eroded as an upper level trough dove south across the Great Lakes to the Ohio River Valley. Locally, there was some form of residual frontal boundary draped across the area. The morning local upper air sounding showed ample instability for robust thunderstorm development as well as ample moisture available. That combo along with a boundary for storms t
Source: NOAA National Weather Service Storm Events Database (event 1043534). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in St. Tammany County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.