DISCUSSION: As persistent tropical moisture continued to be advected off of the Western to Central Gulf of Mexico, the stage continued to be primed for heavy rainfall potential across portions of Southern to Eastern Texas through earlier this week. Having said that, in light of the recent flooding across portions of the Gulf Coast, there is tremendous damage being contended with in the aftermath of all of this flooding. This persistent heavy rainfall was a direct result of strong warm air advection processs which facilitated very robust deep-layer moisture to move into the region of concern (as partially outlined in the graphic attached below. Note that although this particular map only shows Southern Texa,s the extent of the extremely large rainfall totals went well beyond the scope of only Southern Texas.
In addition, another factor which contributed to the development of this long-duration flooding event was the influence(s) from a more conventionally studied atmopheric phenomena known as atmospheric rivers. Atmospheric rivers are long/narrow corridors of moisture which typically span long distances across various ocean basins around the world. These long-tracked corridors of deep tropical moisture track across oceanic basins before landfalling over mainland regions of continents which helps to facilitate thermodynamic environments which are conducive for the development of heavy rainfall events. To learn more about other high-impact weather events from across North America, be sure to click here!