Re: SEPTEMBER 2018 -Flood Watch/Tropical Storm Gordon
Posted: Mon Sep 03, 2018 4:14 pm
Area Forecast Discussion
National Weather Service Houston/Galveston TX
344 PM CDT Mon Sep 3 2018
.DISCUSSION...
Light rain is continuing across portions of the area this afternoon. This rainfall won`t cause any additional flooding but could slow the recession in already flooded areas. A couple of sites near the coast have measured over 10 inches of rain since around 1 am this morning, and we`ve had many reports of impassable flooded roads across Galveston Island.
While things are winding down for now, it looks like there could be another round of some moderate to occasionally heavy rainfall overnight tonight into Tuesday morning. Forecast PWs around 2.2-2.4 inches, a potential coastal convergence zone, and some weak upper level support all combined together are enough to warrant extending the Flash Flood Watch for the coastal areas through noon tomorrow. Overall coverage and totals are not expected to be as high as today, however the already saturated soils in the watch area will be very sensitive to any additional rainfall. The Flash Flood Watch has been cancelled for areas further inland.
Otherwise, no significant changes were made to the extended portion of the forecast. Periods of showers and thunderstorms are expected most days with abundant tropical moisture in place. We`re continuing to monitor Tropical Storm Gordon in the eastern Gulf, but only minimal, if any, impacts are expected for SE Texas at this time.
11
&&
.MARINE...
Light to occasionally moderate onshore winds can be expected this week and on into the weekend. Look for periods of showers and thunderstorms. Locally heavy rainfall is possible tonight through Tuesday morning. At this time, the only effects from Tropical Storm Gordon across the marine area are possible swells toward the middle of the week. Mariners are urged to closely monitor the progress of Gordon as it moves across
the Gulf. 42
&&
.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL) 74 89 74 93 74 / 30 50 20 20 20
Houston (IAH) 76 86 76 92 76 / 50 60 20 40 20
Galveston (GLS) 81 84 80 87 81 / 70 70 40 50 30
&&
.HGX WATCHES/WARNINGS/ADVISORIES...
TX... Flash Flood Watch through Tuesday morning for the following zones: Brazoria Islands... Chambers... Coastal Brazoria... Coastal Galveston... Coastal Harris... Coastal Matagorda... Galveston Island and Bolivar Peninsula... Inland Brazoria... Inland Galveston... Inland Matagorda... Matagorda Islands... Southern Liberty.
GM...NONE.
&&
$$
Discussion...11
Aviation/Marine...42