


Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
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031 FXUS64 KHGX 161049 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 549 AM CDT Mon Jun 16 2025 ...New AVIATION... .OVERVIEW... Issued at 1142 PM CDT Sun Jun 15 2025 - Seasonal temperatures expected throughout the forecast period. - Isolated to scattered showers and thunderstorms are anticipated for the next several days. && .DISCUSSION... (Tonight through Sunday Night) Issued at 1142 PM CDT Sun Jun 15 2025 Mostly tranquil conditions are expected during the overnight hours, although some mid-level vort maxes lingering over Southeast TX could trigger some isolated showers. The low temperatures are expected to be in the lower to mid 70s for areas north of I-10, the mid to upper 70s for areas near and south of I-10, and the upper 70s to lower 80s along the coasts. A bit of a stormy day is expected yet again on Monday as a mid- level trough and additional vort maxes continue to move overhead. We could see some isolated showers and thunderstorms develop near sunrise, in particular over the Gulf waters and locations south of I-10. Showers and thunderstorms are then expected to increase and expand further inland during the morning to early afternoon hours as diurnal heating and instability increases. Some storms could be strong at times and may lead to strong gusty winds, especially with DCAPE possibly near 1000 J/kg. PWs over Southeast TX are expected to range between 1.8 to 2.1 inches, thus, periods of heavy rainfall can also be expected with some of these storms. Small hail cannot be ruled out either. For those who dont get to experience the storms, expect partly cloudy skies with southerly winds at around 10 mph. The high temperatures are expected to be in the upper 80s to lower 90s for much of the region, although areas receiving more rain could see temperatures in the mid to upper 80s. Showers and storms dissipate during the evening to early night hours as temperatures begin to cool and instability decreases. Low rain chances expected Monday night along with low temperatures mainly in the mid to upper 70s. Although models show the eastern edge of a mid-level ridge over Mexico expanding closer into Southeast TX during the week, several upper level disturbances will be passing through the Southern Plains and could continue to trigger isolated to scattered showers and thunderstorms each day. We will continue to see seasonal temperatures throughout the week with high temperatures in the upper 80s to lower 90s. The low temperatures will be slightly on the warmer side, generally in the mid to upper 70s. Cotto && .AVIATION... (12Z TAF Issuance) Issued at 539 AM CDT Mon Jun 16 2025 A few sporadic MVFR CIGS may fill in briefly during the pre-dawn hours. Otherwise VFR conditions will dominate throughout the day. Scattered showers and thunderstorms may develop along the coast early today, spreading inland during the afternoon then tapering off during the early evening. A few storms could become strong at times and may produce gusty winds and heavy downpours. Afterwards light southerly flow prevails overnight. Cloud decks near 700-2500 ft may develop across portions of SE Texas during the early morning hours of Tuesday. These cloud decks could briefly fill in to bring MVFR to IFR conditions, with CIGs more likely to form in areas near and around KCLL. Any CIGs should clear out again after sunrise. 03 && .MARINE... Issued at 1142 PM CDT Sun Jun 15 2025 Light to occasionally moderate onshore winds and seas mainly between 2 and 4 feet are expected for the next several days. Caution flags may be needed mid-week as the pressure gradient tightens and winds strengthen to 15-20 knots. Isolated to scattered showers and thunderstorms are expected each day. Some storms could lead to locally higher winds and seas. Also, persistent onshore flow could lead to strong rip currents along the Gulf facing coasts at times, in particular when winds are above 15 knots. Cotto && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 92 75 92 76 / 20 0 0 0 Houston (IAH) 90 76 91 78 / 60 10 20 0 Galveston (GLS) 88 81 88 82 / 40 10 20 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ OVERVIEW...Cotto /24/ DISCUSSION....Cotto /24/ AVIATION...03 MARINE...Cotto /24/