FXUS64 KSJT 122313 AFDSJT Area Forecast Discussion National Weather Service San Angelo TX 513 PM CST Fri Dec 12 2025 ...New AVIATION... .KEY MESSAGES... - Temperatures will be well-above normal for highs Saturday for most of our area. - Stronger Cold frontal passage Saturday night with gusty winds and colder temperatures Sunday. && .SHORT TERM... (This evening through Saturday) Issued at 1225 PM CST Fri Dec 12 2025 A weak cold front is moving south across the area this afternoon, and will exit our southern counties this evening. North to northeast winds behind the front will drop off and become light by late tonight into Saturday morning. Skies will be clear early tonight, but low cloud cover will develop and increase over the southeastern part of our area late tonight. Lows tonight will be in the mid to upper 30s across northern and western parts of our area, and in the lower to mid 40s for areas farther south and east (Sonora, Junction, Brady and Brownwood areas). Expect northward expansion of cloud cover over southern and eastern parts of our area Saturday morning. Skies will be mostly sunny to partly cloudy in the afternoon. Light winds will become south- southwest by afternoon, and temperatures will be well-above normal for much of the area. Expect afternoon highs to be in the upper 60s to lower 70s in the Big Country, and lower to mid 70s farther south. A stronger cold front will be quickly approaching our area from the north by late Saturday afternoon and early evening. && .LONG TERM... (Saturday night through next Friday) Issued at 1206 PM CST Fri Dec 12 2025 Much colder for Sunday as cold advection and some low cloud cover continue across the area. Temperatures will be dependent on just how extensive the low cloud cover ends up being and how persistent it is. Most models at least show some breaking up of the low clouds for the afternoon, especially across the area north of I-20, which will help offset some of the cold advection. Sunday night is a big of a question. Models show a decent radiational cooling set up for the evening and into the early morning hours, as the mentioned break up of the low clouds combine with decreasing wind speeds and a dry air mass. However, GFS and even the NAM do show return flow and redevelopment of low clouds spreading back to the north into the area by sunrise Monday morning. They do have their differences in how quickly this happens, which is why NAM temperatures are in the mid/upper 20s with models like the GFS 10+ degrees warmer. Expect a decent drop during the evening and early morning, so will undercut the NBM blend to bring forecast lows closer to the NAM, even if temperatures may actually level off or even warm a few degrees by sunrise Monday morning. Monday starts the warming trend with temperatures climbing into the 70s for highs for much of next week. Normal highs are in the lower 60s so this would be 10-15 degrees or more above normal for mid December. && .AVIATION... (00Z TAFS) Issued at 509 PM CST Fri Dec 12 2025 A cold frontal boundary will cause a shift in wind direction from the north. Then, conditions will be favorable for patchy fog across KBBD, KSOA, and KJCT tonight. Expect LIFR to IFR levels across these locations. For KSJT and KABI, some MVFR ceilings are possible as well. && .PRELIMINARY POINT TEMPS/POPS... Abilene 37 71 32 44 / 0 0 0 0 San Angelo 39 75 36 46 / 0 0 0 0 Junction 46 77 41 53 / 0 0 0 0 Brownwood 40 70 34 46 / 0 0 0 0 Sweetwater 38 72 32 42 / 0 0 0 0 Ozona 41 74 40 48 / 0 0 0 0 Brady 45 73 38 46 / 0 0 0 0 && .SJT WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...19 LONG TERM....07 AVIATION...41