Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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095 FXUS64 KEWX 141049 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 549 AM CDT Mon Sep 14 2026 ...New AVIATION... .KEY MESSAGES... Updated at 547 AM CDT Mon Sep 14 2026 - Another Heat Advisory has been issued for the I-35 Corridor and Coastal Plains today from 12 PM to 7 PM. - Low rain chances (10-20%) each day through the week, mainly over the Coastal Plains. - Humid morning conditions and above average temperatures continue through the the week. && .SHORT TERM... (Tonight through Tuesday night) Issued at 1200 AM CDT Mon Sep 14 2026 The upper level ridge center continues to push over northeast Texas early Monday and then shifts into the southeast states. This weather pattern promotes above normal temperatures and critical humidity levels for several days. With that said, a Heat Advisory is in effect for the I-35 corridor and Coastal Plains from noon through 7 PM. Highs ranging from the mid to upper 90s and up to 103 degrees. Heat index could reach up to 111. No significant weather changes for Tuesday with similar conditions forecast as those on Monday with highs in the mid to upper 90s and up to 103 degrees. Heat index values will be elevated with additional heat advisories potentially being issued again for areas along and east of the I-35 corridor. && .LONG TERM... (Wednesday through next Monday) Issued at 1200 AM CDT Mon Sep 14 2026 The upper level ridge dominates the local area weather promoting hot and humid conditions. Additional Heat Advisory may be needed for Wednesday, Thursday, and even Friday. Any shower or thunderstorm activity should be across the Coastal Plains. For next weekend, an upper level disturbance moving westward across the Gulf states and an upper level disturbance coming down across the Southern Plains could bring beneficial rains for some parts of South Central Texas. && .AVIATION... (12Z TAFS) Issued at 547 AM CDT Mon Sep 14 2026 Primary concern this forecast period will be breezy southeasterly winds this evening, primarily at SAT and SSF as the seabreeze moves inland. Persistence has been the most reliable trend for the past few days on picking MVFR CIG time windows. Outside of about 4-7 hours in the predawn to late morning hours. VFR skies will predominate the rest of the periods. Gusty winds are possible with the sea-breeze, which should mainly be felt along I-35 Corridor. The sea-breeze could also bring a stray shower, but not enough to plan for in the TAFs. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 100 77 102 77 / 10 10 0 0 Austin Bergstrom Intl Airport 100 77 101 76 / 10 10 0 0 New Braunfels Muni Airport 99 75 100 75 / 10 10 0 0 Burnet Muni Airport 97 74 98 73 / 0 0 0 0 Del Rio Intl Airport 100 77 101 76 / 0 0 0 0 Georgetown Muni Airport 100 77 100 76 / 0 0 0 0 Hondo Muni Airport 99 74 100 73 / 0 0 0 0 San Marcos Muni Airport 99 75 100 75 / 10 10 0 0 La Grange - Fayette Regional 99 77 100 76 / 30 10 10 0 San Antonio Intl Airport 99 78 100 77 / 10 10 0 0 Stinson Muni Airport 100 77 101 76 / 10 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Heat Advisory from noon today to 7 PM CDT this evening for TXZ173-191>194-205>209-220>225. && $$ SHORT TERM...17 LONG TERM....17 AVIATION...18