Hurricane Harvey, now Tropical Storm Harvey, continues weakening and is nearly stationary, drifting slowly SE towards Matagorda Bay. The storm is causing torrential rainfall from Southwest Louisiana to south of Port O'Connor and inland to near Austin and San Antonio. Houston and its surrounding communities have been hit especially hard, with some sections receiving over 25 inches in the last 24 hours. Roadways are flooded making local transits for workers impractical. A slow storm track over the area will mean periods of heavy rain through Wednesday, resulting in unprecedented flooding for Southeast Texas. A tropical storm warning plus a storm surge warning remains in effect for coastal counties southwest of Sargent TX. The Captain of the Port, Sector Houston-Galveston expects to remain at Port Condition ZULU for at least until tomorrow (29 August), possibly longer. USCG Houston-Galveston Vessel Traffic Service confirms they are approving emergent vessel movements on a case by case basis. All vessels moored alongside a facility during Port Condition ZULU should maintain radio watch on VHF Channel 13. USCG Air and Water assets are working around the clock conducting urban search and rescue operations in the greater Houston area due to floodwaters in the area. US Army Corps of Engineers have positioned numerous survey vessels locally to begin waterway surveys as soon as conditions permit, in order to open the waterways as soon as possible, however the current concentration of assets is directed at recovery in Corpus Christi and Matagorda ship channels. They will also try to survey the Freeport channel based upon comments made by the Brazos Pilots on this call. Some additional assets are being dispatched from the New Orleans District. Houston Pilots sent a pilot boat out to assess the situation on the bar. Seas were reported in excess of 10', winds gusting to 80mph and several navigation aids were off station. Galveston-Texas City Pilots also sent a pilot boat out and saw similar situation to what Houston Pilots reported. Brazos Pilots could successfully travel the entire inside channel and it appears that the ATONs were in good shape inside, but offshore conditions were not as good. It appears they have lost 5-7 feet of depth in the channel due to shoaling at the jetties. For Southwest Louisiana, minor flooding is forecast for the Calcasieu River. Sea conditions at the bar and outer channel are not expected to moderate until Wednesday or Thursday at the earliest. The Captain of the Port, MSU Port Arthur, set Port Condition X-Ray for all ports within the Sector (MSIB 08-17) at noon on Friday. US Army Corps of Engineers suggest the Bar channel will most likely be the only area seriously impacted by the storm. Louisiana State Police report that all roads are open, but flooding has been reported.