Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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221 FXUS64 KEWX 260609 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 109 AM CDT Sun May 26 2024 ...New AVIATION... .SHORT TERM... (Tonight through Sunday night) Issued at 158 PM CDT Sat May 25 2024 Low clouds have dissipated across South Central Texas early this afternoon leaving mostly clear skies and hot temperatures on deck for this afternoon. The dryline remains to the west of Val Verde County, but may make it into its western reaches later today. Hot and humid conditions are seen ahead of this with afternoon highs from the mid 90s to around 107 degrees. Heat indices will be in excess of 108 degrees for the majority of areas today as elevated dewpoints continue this afternoon. Only the Hill Country remains without a Heat Advisory today as heat indices look to remain at or below 106 degrees for them. Dry weather continues as it looks like storms will fire off north of the area today. Another night of warm overnight lows is seen with temperatures early Sunday morning expected to be in the 70s to low 80s. Low clouds also build in overnight that look to mix out around noon tomorrow. Dangerous early season heat continues tomorrow. The dryline will push much further east into the area than today, which will keep heat indices lower in the west. That said, ambient temperatures will still push into the 100-109 degree range over this area. East of the dryline, heat index values will once again exceed 108 degrees in all locations but the Hill Country and another Heat Advisory is expected. Slightly less cloud cover Sunday night into Monday may lead to slightly "cooler" lows this period for some. && .LONG TERM... (Monday through Saturday) Issued at 158 PM CDT Sat May 25 2024 There are a couple of disturbances pushing over South Central Texas late Monday afternoon into the evening that could trigger isolated to scattered showers and storms across the Rio Grande and over parts of the Hill Country. Some of these storms could be strong to marginally severe with the main threats being large hail and damaging wind gusts. Convective initiation is expected later in the day as daily high temperatures reach the upper 90s and up to 109 degrees along the Rio Grande. A Heat Advisory is likely to be in effect for a good portion of the local area. Tuesday is looking cooler based on cloud coverage across the local area with highs in the low to mid 90s for the most part and upper 90s along the Rio Grande. Isolated to scattered showers and thunderstorms are forecast once again late Tuesday afternoon into the evening period as a short wave trough moves across central Texas. Some of these storms could be strong to marginally severe with the main threats being large hail and damaging wind gusts. Wednesday continues to be "cooler" with highs in the upper 80s to mid 90s and up to 101 degrees over some locations along the Rio Grande. An approaching cold front pushing south over central Texas may trigger some showers and storms ahead of it over the Hill Country. Chances for showers and storms continue into the latter part of the week as upper level short waves move over or nearby South Central Texas. && .AVIATION... (06Z TAFS) Issued at 102 AM CDT Sun May 26 2024 Low stratus deck should be somewhat repetitive of what we had over the past 24 hours with all sites remaining MVFR or better. There could be a faster mixing to VFR later this morning as the models are projecting a farther east push of the dry-line than from previous days. For this reason, will show VFR skies by 16Z along I-35 and also show a one hour delay in the return of low clouds late tonight. && .CLIMATE... (RECORD HIGHS THIS WEEKEND INTO MONDAY) Issued at 219 AM CDT Sat May 25 2024 SAT SUN MON 05/25 05/26 05/27 -------------------------------------- AUS 100/2011 97/2018 100/2011 ATT 100/2011 99/2018 100/2011 SAT 103/1989 100/1989 100/2011 DRT 104/2011 106/2018 106/2018 && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 75 99 74 94 / 0 10 20 20 Austin Bergstrom Intl Airport 74 99 73 95 / 10 10 20 20 New Braunfels Muni Airport 74 100 74 97 / 10 10 20 10 Burnet Muni Airport 72 97 72 91 / 0 10 20 20 Del Rio Intl Airport 74 109 82 101 / 0 10 10 30 Georgetown Muni Airport 72 98 72 92 / 0 10 20 20 Hondo Muni Airport 72 104 74 98 / 10 10 20 20 San Marcos Muni Airport 74 100 72 95 / 10 10 20 10 La Grange - Fayette Regional 76 97 75 93 / 0 10 20 10 San Antonio Intl Airport 76 101 75 96 / 10 10 20 10 Stinson Muni Airport 77 102 76 97 / 10 10 20 10 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...18 Long-Term...29 Aviation...18