Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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644 FXUS64 KHGX 251058 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 558 AM CDT Sat May 25 2024 ...New AVIATION... .SHORT TERM... (Today through Sunday Night) Issued at 355 AM CDT Sat May 25 2024 Hot temperatures are in the forecast again today as highs top out in the 90s inland and in the mid to upper 80s along the coast. The combination of heat and humidity will result in heat index values in the 100-107 degree range. A few locations may touch 108 degrees. Surface winds will be elevated today (in the 10-15mph range), which may provide a bit of relief with the hotter temperatures. Lows for tonight will be on the warmer side as temperatures hover at or just below the 80 degree mark. Sunday is set to be a bit hotter as 850mb temperatures max out in the NAEFS mean. Temperatures will be in the 90s area wide with mid to upper 80s along the coast. Dew points will reach into the upper 70s and will lead to humid conditions. The combination of heat and humidity will result in heat index values bumping up a bit into the advisory range. Most of the area will experience HI values in excess of 100 degrees. Locations in the metro and further inland will be in the 107-110 range. This will likely necessitate the issuance of Heat Advisory for portions of SE Texas on Sunday. Sunday night`s temperatures will be similar to tonight`s with most areas in the 70s to around 80 degrees. With daytime temperatures getting hotter and humidity increasing, please remember to take precautions if you plan to be out in the heat. Stay hydrated, avoid strenuous activity during the hottest part of the day, look before you lock, and remember that if it is too hot for the palm of your hand, the ground is too hot for your pets` paws! Adams && .LONG TERM... (Monday through Friday) Issued at 355 AM CDT Sat May 25 2024 Dog breath type wx should peak on Monday. Highs in the 94-98F range inland and close to 90 at the beaches will combine with high dewpoints/RH`s and produce peak heat indices in the 105-113F range. A Heat Advisory will likely be ongoing, and if not, one will likely be required. On Tuesday, winds will transition to more of a SE direction versus the warmer SW. Though still uncomfortable, daytime highs will begin trending downward into the 90-95F range. We should also see the miserable dewpoints in the upper 70s to near 80 begin modifying back toward 72-76 as some recycled "drier" air starts backdooring into the region from a weak frontal boundary that`ll be sagging into the Mississippi Valley and Louisiana. We should get some slow, gradual relief each day in the mid and late work week period. In regards to rain chances, we`ll focus on areas to our w/nw Monday afternoon. Guidance still suggests the potential for parts of the dryline to light up...with remnants possibly getting close, or into, parts of the Brazos Valley or Piney Woods Monday evening. Tuesday, we`ll look at the NE parts of the CWA toward peak heating where we might see some scattered convection on the western periphery of the backdoor front/boundary. Tuesday night through Friday, we should see multiple chances for shra/tstms across parts of the area. This`ll come from typical daytime heating, but will also need to be cognizant of disturbances moving in from our NW. These could come just about anytime and most deterministic data shows some moving in every 24-36 hours. Problem is timing really isn`t consistent between models, some in the day / some at night, which isn`t uncommon in such patterns. We`ll just advertise lowish POPs for now during most time periods then ramp them up when things begin to line up better and confidence improves. 47 && .AVIATION...
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(12Z TAF Issuance) Issued at 544 AM CDT Sat May 25 2024 Primarily MVFR CIGs this morning for all sites except SGR at IFR and HOU at VFR. Expect MVFR to continue through most of the morning with VFR returning to all sites by 18Z. Winds 10-15kts out of the S/SE with gusts of 20-25kts at times this afternoon. Winds will weaken tonight with MVFR CIGs returning overnight.
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&& .MARINE... Issued at 355 AM CDT Sat May 25 2024 Buoys are showing 4-5ft seas and sse winds 10-15kt. Though both are below caution flag criteria, I`m going to keep it going for the waters as winds should increase back into the 15-20kt range later today (and also considering it`s a holiday weekend). Moderate onshore winds and 3-6ft seas will continue thru Mon and one can anticipate a higher than normal risk of rip currents along area beaches. Swim near a lifeguard and away from rocks, jetties and piers. SE fetch lengthens, and speeds increase at times into mid-late week. We currently have 3-5ft seas in the forecast, but wouldn`t be surprised if we see some slight upward adjustments with time. 47 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 94 77 94 77 / 0 0 10 0 Houston (IAH) 93 78 94 80 / 0 0 0 0 Galveston (GLS) 86 80 86 82 / 0 0 0 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...Beach Hazards Statement through late Sunday night for TXZ436>439. GM...Small Craft Should Exercise Caution through this evening for GMZ330-335-350-355-370-375. && $$ SHORT TERM...Adams LONG TERM....47 AVIATION...Adams MARINE...47