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Area Forecast Discussion
Issued by NWS San Angelo, TX
Issued by NWS San Angelo, TX
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839 FXUS64 KSJT 062001 AFDSJT Area Forecast Discussion National Weather Service San Angelo TX 301 PM CDT Sat Jul 6 2024 ...New SHORT TERM... .SHORT TERM... (This evening through Sunday) Issued at 300 PM CDT Sat Jul 6 2024 Isolated to scattered slow-moving showers and thunderstorms are occurring this afternoon over the southern half of our area. The airmass is moderately unstable and moist (precipitable water values between 1.6 and 1.9 inches). The main storm hazards are lightning, gusty winds and heavy rainfall. Given the weak steering flow and slow movement with the convection, heavy rain could cause ponding of water on roads and result in minor flooding of poor drainage areas. The showers and storms will dissipate this evening, and skies will be mostly clear tonight. Per the boundary layer moisture fields, patchy low cloud development early Sunday morning is anticipated over some of our southern counties (primarily Sutton and Kimble). Overnight lows will be mostly in the lower 70s, with a few mid 70s possible in the Big Country. Our area will be under rather weak northwest flow aloft tonight and Sunday. A strong upper level ridge will be over the west coast, and an upper level trough will be centered over mainly the northern and central Plains. Wind speeds will be higher on Sunday with increased surface pressure gradient across our area. South or south-southwest winds in the morning with slight backing to the south-southeast in the afternoon. With mostly sunny skies and 850mb thermal ridge expanding east into our area, temperatures will be hotter on Sunday. Highs are expected to be 100-103 degrees in much of the Concho Valley and Big Country, and in the mid to upper 90s elsewhere. Expect any rain chances to be north of our area prior to 7 PM Sunday. && .LONG TERM... (Sunday night through next Saturday) Issued at 111 PM CDT Sat Jul 6 2024 The next chance for some precipitation will develop across the Big Country Sunday night as another cold front is poised to track across the area Sunday evening into Monday. Models continue to show this feature coinciding with an upper-level shortwave trough tracking across the region Monday, which can aid in the development of some scattered showers and isolated thunderstorms from Sunday evening through Monday night. Meanwhile, models continue to keep the remnants of Tropical Storm Beryl mostly to our east after the system makes landfall over the Texas Gulf Coast. This track will likely lead to the bulk of significant precipitation staying east of our area, and less precipitation for much of West Central Texas. The NBM has continued to trend precipitation chances down for Tuesday through Thursday, although we cannot rule out a few showers and storms developing along or over our eastern most counties. As for temperatures across the area, slightly cooler conditions are possible for Monday and Tuesday after the passage of the cold front, ranging in the mid 80s to mid 90s. Temperatures will then climb back into the 90s and triple digits by the end of the week and into next weekend. && .AVIATION... (18Z TAFS) Issued at 1257 PM CDT Sat Jul 6 2024 Isolated to scattered showers and thunderstorms are expected this afternoon across the southern third of our area, with isolated convection farther north into the Concho Valley and Heartland. Localized gusty winds are possible in the showers and storms and with outflow boundaries emanating from the convection. Brief visibility and ceiling reductions are possible in the locally heavy rain accompanying the showers and storms. The KSOA and KJCT TAF sites are most likely to be affected, and carrying Tempo groups for those sites this afternoon. Mostly clear skies are expected tonight and Sunday. Patchy low cloud development could occur 12Z-15Z Sunday over parts of the I-10 corridor, and this could potentially result in MVFR ceilings at KSOA and KJCT. Southeast winds will veer to south overnight. Increased south or south-southwest winds are expected by mid-to-late morning Sunday. && .PRELIMINARY POINT TEMPS/POPS... Abilene 72 99 72 89 / 10 10 20 30 San Angelo 72 102 74 96 / 10 0 10 20 Junction 71 97 72 93 / 10 10 0 10 Brownwood 71 96 72 90 / 10 0 10 20 Sweetwater 74 101 73 89 / 10 10 20 30 Ozona 71 98 73 94 / 10 0 0 10 Brady 71 96 72 89 / 10 10 0 20 && .SJT WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...19 LONG TERM....TP AVIATION...19