Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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410 FXUS64 KEWX 220808 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 208 AM CST Wed Jan 22 2025 ...New SHORT TERM, LONG TERM... .SHORT TERM... (Today through Thursday) Issued at 208 AM CST Wed Jan 22 2025 Key Messages: - Some residual moisture on roadways may have refrozen into black ice this morning. Use caution if traveling through this morning - Cold Weather Advisory in effect through this morning with hazardous temperatures and wind chill values. Protect People, Pets, Plants, and Pipes from the cold weather The Cold Weather Advisory continues through noon today these bitterly cold conditions. Additionally, with freezing temperatures overnight, any residual moisture will be frozen and could lead to patchy black ice on roads and concrete. Use caution through Wednesday morning if venturing out. Highs will rise into the upper 40s to mid 50s Wednesday afternoon under mostly clear skies. Cloud cover increases Wednesday night and another weak cold front moves across the area overnight. Forecast lows are in the mid and upper 20s, so another hard freeze is anticipated for all but the urban centers of Austin and San Antonio and over southwest counties where a light freeze is expected. Wind chills will be in the teens and 20s but look to stay above Cold Weather Advisory criteria at this time. A reinforcing cold front arrives before daybreak Thursday, but not significant changes in winds or day-to-day high temperatures are projected from this feature. && .LONG TERM... (Thursday night through Tuesday) Issued at 208 AM CST Wed Jan 22 2025 Key Messages... - Hard freeze Thursday night into Friday morning - Clouds and warmer temperatures return over the weekend with low chances for showers - Weak cold front early next week Clear skies, dry air, and light winds will allow for one more hard freeze Thursday night into Friday morning. Low temperatures in the 20s are forecast for most of the area. A southerly flow resumes on Friday and strengthens Saturday, with dew points and low level moisture modifying quickly Saturday. The weekend looks to remain mostly cloudy to cloudy across most of the area, except the Rio Grande, with low level warm air advection contributing to some weak showers across central and eastern areas late Saturday into Sunday beneath a weak cap. A shallow, weak cold front is forecast to move into the northern areas Sunday morning, however there is low confidence on how far south the front and modified polar air makes it Sunday, given the upper level low forecast to over California and west to southwest flow aloft across Texas. Nonetheless, a second surge from the north should help push the front through the area Monday, with cooler conditions behind it, but continued cloudy conditions and rain chances given the pattern aloft. && .AVIATION... (06Z TAFS) Issued at 1101 PM CST Tue Jan 21 2025 VFR conditions will persist through at least the next 30 hours. Strong radiational cooling overnight could lead to frost developing along the I-35 corridor (KAUS/KSAT/KSSF) mainly after 09Z. Southwesterly winds will strengthen in the afternoon before weakening. A weak front is forecast to move through the region northwest to southeast around 00Z-06Z Thursday, reaching the I-35 corridor around 05Z and shifting winds northwesterly. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 50 30 54 28 / 0 0 0 0 Austin Bergstrom Intl Airport 50 25 53 26 / 0 0 0 0 New Braunfels Muni Airport 50 27 55 27 / 0 0 0 0 Burnet Muni Airport 52 27 51 26 / 0 0 0 0 Del Rio Intl Airport 55 30 57 28 / 0 0 0 0 Georgetown Muni Airport 52 26 52 26 / 0 0 0 0 Hondo Muni Airport 51 26 55 24 / 0 0 0 0 San Marcos Muni Airport 49 26 53 25 / 0 0 0 0 La Grange - Fayette Regional 46 26 52 26 / 0 0 0 0 San Antonio Intl Airport 50 29 53 28 / 0 0 0 0 Stinson Muni Airport 50 29 55 29 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Cold Weather Advisory until noon CST today for Atascosa-Bandera- Bastrop-Bexar-Blanco-Burnet-Caldwell-Comal-De Witt-Dimmit-Edwards- Fayette-Frio-Gillespie-Gonzales-Guadalupe-Hays-Karnes-Kendall-Kerr- Kinney-Lavaca-Lee-Llano-Maverick-Medina-Real-Travis-Uvalde-Val Verde-Williamson-Wilson-Zavala. && $$ Short-Term...18 Long-Term...76 Aviation...18