Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
814 FXUS64 KHGX 101708 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 1208 PM CDT Sun Aug 10 2025 ...New DISCUSSION, MARINE... .KEY MESSAGES... Issued at 1208 PM CDT Sun Aug 10 2025 - Mostly typical summertime weather is expected this week with hot/humid conditions and isolated to scattered showers and thunderstorms each day. - Rain chances will vary on a day-to-day basis depending on moisture level fluctuations, but model guidance is currently suggesting that we might see that Friday has the best overall precip chances/coverage. && .DISCUSSION... Issued at 1207 PM CDT Sun Aug 10 2025 Water vapor imagery shows the inverted mid-upper has made it to the Tx coast. Its axis should very slowly drift westward the next few days and leave a general weakness across the region (sandwiched between ridges to the west/east) into mid-late week. PW`s aren`t fcst to be very high, just in the 1.6-2.1" range into Tuesday...but still enough to get some typical diurnally driven isolated to scattered showers and thunderstorms to emerge. Wed-Fri, we should see deeper Gulf moisture, currently situated in the eastern Gulf and Caribbean (2.0-2.5") makes its way toward and into the area which should allow for slightly higher areal coverage than what we see in the first half of the work week. Highest surge looks to arrive around Friday. Heading into the weekend, ridging will build westward across the northern Gulf and into the area. With rising heights, more subsidence and lower moisture availability...rain chances should trend downward and temperatures upward. 47 && .AVIATION... (12Z TAF Issuance) Issued at 634 AM CDT Sun Aug 10 2025 Pretty close to a persistence forecast for today. VCSH already being seen at LBX and sometimes GLS, and will transition to aftn TSRA a farther inland. PROB30s for SGR, HOU, and IAH again with a slight favor to the southern pair versus IAH. Opted to include gusty winds in the PROB30 today as environment is quite similar to yesterday, which produced numerous 20-30 kt gusts and a few in excess of 30 kt. If PRO20 or PROB15 were an allowable mention, would use that for CXO...so even though it has no precip mention for the afternoon, -TSRA not completely off the table there either. && .MARINE... Issued at 1207 PM CDT Sun Aug 10 2025 With the exception of the afternoon-evening seabreeze when we`ll see winds in the 10-15kt range, light winds and low seas look to continue into midweek. A more prevailing SSE wind 8-15kt should set up during the second part of the week allowing for some slightly higher seas in the 3-4ft range take shape. Mariners should anticipate scattered showers and thunderstorms each day - with the highest chances generally in the late night through early afternoon hours. 47 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 74 94 74 95 / 30 20 10 30 Houston (IAH) 77 95 78 98 / 20 40 20 40 Galveston (GLS) 81 90 82 91 / 50 50 20 40 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ DISCUSSION...47 AVIATION...03 MARINE...47