Tropical Storm Harvey emerged back over the Northwest Gulf of Mexico during the morning hours of August 28th, and intensified slightly as drifted northwest just off the Southeast Texas coast, eventually making a 3rd landfall near Cameron, Louisiana during the early morning hours of August 30th. The persistent outer bands of Tropical Storm Harvey began consistently affecting Angelina County, Texas during the afternoon and evening of August 27th, with persistent training resulting in flash flooding. Breaks in the heavy rain were observed through much of the 28th before affecting Angelina County again during the late afternoon/evening hours, which continued through the early morning hours on August 29th. After Harvey made landfall in far Southwest Louisiana during the early morning hours of August 30th, the more concentrated bands of heavy rain were concentrated on the northwest side of the center, which slowly drifted northeast into Central Louisiana during the afternoon and evening hours. Thus, more significant reports of flash flooding were received across Deep East Texas and Westcentral Louisiana, before drier air had begun to wrap around the center, thus reducing rainfall rates as the center moved into Northeast Louisiana during the early morning hours of August 31st. In addition to the widespread flooding, reports of downed trees and power lines were received over portions of Deep East Texas and Northcentral Louisiana, as some of the stronger squalls produced wind gusts to 35-40 mph with locally higher gusts atop already saturated grounds.
Here are some of the 4 day cumulative rainfall reports across Deep East Texas from Tropical Storm Harvey: In Angelina County, 2 ESE Zavalla 20.27 inches, 2 ENE Zavalla 17.32 inches, Huntington 13.94 inches, Lufkin Angelina Airport 12.11 inches, 1 SSE Lufkin 11.96 inches, 3 SW Lufkin 11.74 inches, 8 W Lufkin 10.17 inches, 5 WNW Lufkin 10.00 inches, 7 W Lufkin 9.60 inches, 2 WSW Hudson 9.09 inches. In Nacogdoches County, 4 NW Appleby 9.91 inches, Nacogdoches Arbor Oaks 8.35 inches, 10 NE Nacogdoches 6.38 inches. In Sabine County, Pineland 15.67 inches, Sabine South RAWS 14.36 inches, 4 SSE Hemphill 8.77 inches. In San Augustine County, 15 SE Broaddus 19.01 inches, Ayish Bayou 15.45 inches. In Shelby County, 4 SSW Huxley 13.24 inches, Center 0.6 NW 6.62 inches, Center 4.26 inches. In addition, the Neches River gauge near Rockland recorded 21.93 inches, with Sam Rayburn Dam recording 18.21 inches.