


Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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225 FXUS64 KEWX 070555 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 1255 AM CDT Mon Jul 7 2025 ...New SHORT TERM, LONG TERM... .KEY MESSAGES... - Threat of Flash Flooding from rather slow moving and repeat heavy rains continues overnight through early Monday evening. A Flood Watch has been issued for the I-35 corridor, Hill Country, and Edwards Plateau through 7 PM CDT Monday evening. - Rain chances continue mid week, take a break late week, then return next weekend. - Temperatures trend toward average as the week progresses. && .SHORT TERM... (Today through Tuesday) Issued at 1255 AM CDT Mon Jul 7 2025 A mid level MCV and moist tropical airmass with PWs of 1.7 to 2.4 inches remain in place over our area and will linger today. Forcing by this feature has already generated a few showers over Williamson County. An overwhelming suite of models/ensembles forecast showers and thunderstorms to increase in coverage overnight into Monday morning. The favored areas continue to be the I-35 corridor into the Hill Country with a slight spread toward the Edwards Plateau later in the morning. Forecast storm motion vectors have sped up a little compared to recent days. This may somewhat lessen rainfall amounts. However, locally heavy rains of 2 to 4 inches are expected with up to 10 inches still possible. These rainfall amounts may cause flash and possibly renewed river flooding in the watch area. It must be noted that models vary considerably on where the heaviest rains will occur within the watch area. The showers and thunderstorms will dissipate with loss of heating Monday evening. An upper level trough that has been over the central Gulf of America will move toward the Texas coast on Tuesday. This will likely take the MCV away from our area. As a result, it should not impact our area after today. This scenario is seen in most all of the models/ensembles. As the trough approaches, chances of showers and thunderstorms develop from the Coastal Plains to the I-35 corridor Tuesday afternoon. Moisture levels/PWs decrease some, however still cannot rule out a few heavy downpours. The clouds and rain areas keep daytime temperatures slightly below July averages. && .LONG TERM... (Tuesday night through Sunday) Issued at 1255 AM CDT Mon Jul 7 2025 The mid level trough moves farther inland and develops into a shear axis between Subtropical Ridges centered over the southwestern states/northwestern Mexico and the eastern Gulf of America into the Atlantic. Moisture levels near seasonal levels maintain chances of showers and thunderstorms across eastern areas Wednesday afternoon. Although rain is not in the forecast due to a drier airmass, cannot rule out isolated showers and perhaps a thunderstorm or two each afternoon with heating on Thursday and Friday. Chances of showers and thunderstorms return next weekend as moisture levels increase due to the shear axis pushing to our west. Near July average temperatures are expected. && .AVIATION... (06Z TAFS) Issued at 1235 AM CDT Mon Jul 7 2025 Analyzing recent radar trends decided to add PROB30s from now until 09Z for KAUS and 07Z to 10Z for KSAT and 08Z to 11Z for KSSF to account for uncertainty with extent of -TSRA timing early this morning. Any storm that forms would bring extreme rainfall rates and a reduction in visibilities. Have kept vicinity showers into the overnight hours with MVFR ceilings returning by 9-10Z this morning and sticking around through late morning. VFR conditions look to return in the afternoon. There is a possibility for -RA/-TSRAs to develop in the afternoon over KAUS but kept mention out of this forecast due to low confidence. For KDRT expect VFR conditions with no precip to continue with MVFR conditions possible after 11Z with VFR CIGs returning by 22Z. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 92 74 94 74 / 30 10 20 10 Austin Bergstrom Intl Airport 92 74 92 74 / 30 10 20 10 New Braunfels Muni Airport 92 73 92 72 / 30 10 20 10 Burnet Muni Airport 88 72 90 72 / 50 10 20 10 Del Rio Intl Airport 94 76 95 76 / 20 10 0 0 Georgetown Muni Airport 90 74 91 73 / 40 10 20 10 Hondo Muni Airport 91 73 90 72 / 30 10 10 0 San Marcos Muni Airport 92 74 93 72 / 30 10 20 10 La Grange - Fayette Regional 92 75 92 74 / 40 10 40 10 San Antonio Intl Airport 92 75 91 75 / 30 10 20 10 Stinson Muni Airport 94 75 93 74 / 20 10 20 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Flood Watch through this evening for Bandera-Bastrop-Bexar-Blanco- Burnet-Caldwell-Comal-Edwards-Gillespie-Guadalupe-Hays-Kendall-Kerr- Lee-Llano-Medina-Real-Travis-Uvalde-Williamson. && $$ Short-Term...04 Long-Term...04 Aviation...CJM