Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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390 FXUS64 KEWX 221059 AAA AFDEWX Area Forecast Discussion...UPDATED National Weather Service Austin/San Antonio TX 459 AM CST Fri Nov 22 2024 ...New AVIATION (12Z TAFS)... .SHORT TERM... (Today through Saturday) Issued at 232 AM CST Fri Nov 22 2024 Yet another cold start is expected Friday morning with nearly calm surface winds and dewpoints in the upper 20s to mid 30s allowing air temperatures to tank. Expect temps in the 30s and lower 40s to start the day, followed by yet another spectacular afternoon with temperatures in the low to mid 70s. Mid-level westerly flow will keep things quiet in the short term period, with mainly clear skies and pleasant conditions. Expect yet another cool start to Saturday morning, but not quite as cold as Thursday or Friday morning. Saturday afternoon will see the return of south to south-southwesterly flow in the sfc to 850mb level, resulting in a nice bump in temperatures, with highs climbing into the upper 70s and lower 80s outside of the Hill Country where temperatures will struggle to get out of the lower to middle 70s. && .LONG TERM... (Saturday night through Thursday) Issued at 232 AM CST Fri Nov 22 2024 Southerly flow in the low-levels begins to increase Saturday night as the pressure gradient tightens in response to a deepening surface low over southeast Colorado. Overnight lows will trend upward into the 50s as south winds remain gusty over the higher terrain of the southern Edwards Plateau and Hill Country. Southerly winds remain intact on Sunday as afternoon highs peak in the mid 70s to upper 80s. Temperatures nudge upward a few degrees on Monday, with lower 80s to near 90 degrees in the forecast. We do expect a cold front to move into the northern portions of the Hill Country during the late afternoon or early evening hours. As of now, it looks like the front won`t impact afternoon highs, but the if the front trends faster, we may need to adjust highs downward over the mentioned area. Highs on Tuesday will drop roughly 10 degrees over what we expect on Monday and this should keep most areas in the 70s. Southerly flow resumes rather quickly by early Wednesday with a surface low noted over the Texas Panhandle. Highs on Wednesday briefly warm back into the upper 70s to upper 80s, with another cold front expected Thursday, Thanksgiving Day. The current round of models show this front will be a little stronger with the cold air advection and with both the GFS and ECMWF guidance showing high temperatures lower than the NBM, we will trend the forecast highs downward as well. If subsequent model runs remain consistent, we will need to trend our forecast highs even lower on Thursday. For now, we will keep highs in the mid 60s to mid 70s. && .AVIATION... (12Z TAFS) Issued at 446 AM CST Fri Nov 22 2024 Little to no change to the previous forecast. Light and variable winds are expected through most of the period, followed by a shift to prevailing southerly winds after 16Z Saturday. At DRT, ESE winds can be expected through the forecast period. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 75 48 77 59 / 0 0 0 0 Austin Bergstrom Intl Airport 76 40 79 55 / 0 0 0 0 New Braunfels Muni Airport 78 44 81 56 / 0 0 0 0 Burnet Muni Airport 74 45 76 56 / 0 0 0 0 Del Rio Intl Airport 78 50 81 57 / 0 0 0 0 Georgetown Muni Airport 73 42 77 57 / 0 0 0 0 Hondo Muni Airport 76 44 79 55 / 0 0 0 0 San Marcos Muni Airport 76 42 80 55 / 0 0 0 0 La Grange - Fayette Regional 76 45 80 56 / 0 0 0 0 San Antonio Intl Airport 76 48 78 58 / 0 0 0 0 Stinson Muni Airport 77 46 80 58 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...MMM Long-Term...Platt Aviation...MMM