889 FXUS64 KHGX 100509 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 1209 AM CDT Wed Oct 10 2018 .AVIATION... Radar much quieter at this time, but we could still see some iso- lated showers overnight with the passage of the cold front itself. The airmass may be worked over for much more than that. Otherwise will have to keep an eye on visibility/ceiling restrictions these next several hours with the development of patchy fog given light to calm winds...low dewpoint spreads and wet grounds. The passage of this cold front into the Gulf waters should usher in drier and slightly cooler air into SE TX by this afternoon. VFR thereafter. 41 && .PREV DISCUSSION... /ISSUED 955 PM CDT Tue Oct 9 2018/ Shortwave is pushing ne and out of the region. Convection is tapering off as overall lift/forcing weakens. Lingering boundary and outflows generally southeast of Highway 59 may still provide enough of a focus for isolated to scattered shra/tstms overnight, but overall coverage trend should be downward. Cold front itself is moving thru the Panhandle at this hour and should be moving into and thru se Tx during the morning hours Wed...with noticeably drier air moving in during the afternoon hours. For the update...tweaked POPs and temps based on latest trends mentioned above. Also added some patchy fog. As far as marine issues go...seas are in the 4-6 foot range at 10-12sec. These should go up another couple feet and periods increase close to 13 sec overnight. Considering we have already seen coastal flooding on Bolivar and the west end of Galveston Island, suspect we'll see additional issues at the high tide late tonight as wave run up will be even higher. Went ahead and expanded the Coastal Flood Warning into coastal Brazoria County where we'll probably see some flooding from San Luis Pass along the Blue Water Highway and also Beach Drive in Surfside. 47 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 68 82 58 80 59 / 30 10 0 0 0 Houston (IAH) 72 87 62 82 61 / 70 10 0 0 0 Galveston (GLS) 77 87 71 81 70 / 40 20 0 0 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...Coastal Flood Advisory until 4 PM CDT Wednesday for the following zones: Coastal Brazoria...Coastal Galveston... Coastal Harris...Coastal Jackson...Coastal Matagorda... Matagorda Islands. Coastal Flood Warning until 4 PM CDT Wednesday for the following zones: Brazoria Islands...Chambers...Galveston Island and Bolivar Peninsula. GM...SMALL CRAFT SHOULD EXERCISE CAUTION through Wednesday evening for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM...Coastal waters from High Island to Freeport TX out 20 NM. Small Craft Advisory until 9 PM CDT Wednesday for the following zones: Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM...Waters from High Island to Freeport TX from 20 to 60 NM. && $$