Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
643 FXUS64 KEWX 092312 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 512 PM CST Tue Dec 9 2025 ...New AVIATION... .KEY MESSAGES... - Patchy fog east of I-35 tonight; will monitor for dense fog in the coastal plains. - Dry weather with above normal temperatures through Saturday. A cold front Sunday brings at or below normal temperatures through Tuesday. && .SHORT TERM... (Tonight through Wednesday night) Issued at 1144 AM CST Tue Dec 9 2025 Southerly winds are in place and will continue through tonight. This will keep overnight lows above freezing across south central Texas, with upper 30s to upper 40s in the forecast. South to southwest winds early Wednesday will become northerly as a cold front moves southward. Given the speed of the front, we have opted to decrease high temperatures over the NBM for the southern Edwards Plateau, Hill Country and nearby I-35 corridor north of Austin. Highs in the mentioned areas will range from the mid 60s to near 70 degrees. Farther south, we will show warmer highs, mainly in the 70s. The front will bring some cooler and drier air to the region, so look for lows Wednesday night/Thursday morning in the mid 30s to mid 40s. && .LONG TERM... (Thursday through next Tuesday) Issued at 1144 AM CST Tue Dec 9 2025 Southerly flow in the lower levels returns to all areas Thursday afternoon and will continue through Saturday. We expect to see above normal temperatures through this period along with continued dry conditions. Some of the models do show a weak front making a brief southward push into the Edwards Plateau early Saturday morning. We will continue to watch future model data, but suspect we will not see much of an impact from this front. A much stronger front is expected to move in Sunday morning and based on the good agreement among the operational models, we have lowered Sunday`s high temperature over the current NBM. Just ahead of this front, we could see some weak forcing to result in an isolated shower or two across the Rio Grande plains south of Del Rio. We may need to expand rain chances into the coastal plains as well, but with low confidence that far out, will not add any mention to the forecast just yet. Cloud cover will also be on the increase for the start of next week as warm air advection just above the shallow, cold air near the surface develops. There is quite a bit of disagreement in the models regarding the flow aloft and timing of shortwaves as we head into early next week. This could bring some low rain chances to areas along and east of I-35. For now, confidence is low and will only mention a 20% chance for rain at this time. Persistent cloud cover will keep daytime highs at or just below normal, with overnight lows above normal. && .AVIATION... (00Z TAFS) Issued at 510 PM CST Tue Dec 9 2025 High pressure will remain in control for the upcoming TAF period. Skies will be mostly clear. Winds will be light through the evening and overnight. A cold front will move through the area Wednesday bringing northerly to northwesterly winds around 10 kts during the afternoon. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 48 71 43 70 / 0 0 0 0 Austin Bergstrom Intl Airport 45 71 42 70 / 0 0 0 0 New Braunfels Muni Airport 44 72 42 69 / 0 0 0 0 Burnet Muni Airport 46 67 39 69 / 0 0 0 0 Del Rio Intl Airport 44 76 45 72 / 0 0 0 0 Georgetown Muni Airport 47 68 40 69 / 0 0 0 0 Hondo Muni Airport 41 75 43 70 / 0 0 0 0 San Marcos Muni Airport 44 72 42 70 / 0 0 0 0 La Grange - Fayette Regional 46 71 42 69 / 0 0 0 0 San Antonio Intl Airport 46 74 47 69 / 0 0 0 0 Stinson Muni Airport 44 76 47 70 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...27 LONG TERM....27 AVIATION...05