textproduct: Austin/San Antonio

KEY MESSAGES

- Flood Watch remains in effect for portions of South Central Texas through Tuesday evening with pockets of heavy rainfall and high hourly rainfall rates expected at times.

- Dry weather conditions are forecast for most of South Central Texas middle of the week. Rain chances return on Friday into the weekend.

- Warm and humid conditions persist with elevated heat indices from the middle of this week to early next week

SHORT TERM

(Tonight through Tuesday night) Issued at 1142 AM CDT Mon Jun 15 2026

A slow moving front and increased tropical moisture combination is forecast to bring heavy rainfall across the Coastal Plains for the rest of this afternoon into the overnight hours. Another round of heavy rainfall is forecast for portions of the I-35 corridor and Coastal Plains between mid morning to mid Tuesday afternoon. A Flood Watch remains in effect for the Coastal Plains into the Rio Grande Plains through 7 PM CDT Tuesday. The Flood Watch was canceled for the Hill Country, portions of the I-35 corridor including the Austin and San Antonio metro areas, and southern Edwards Plateau as the projected heavy rainfall is to fall to the south of these locations. Rainfall amounts up to 6 inches are possible anywhere in the Flood Watch area. With rain rates of 2 to 3 inches per hour with a tropical airmass in place will take a short period of time for flooding to occur. Stay weather aware and away from poor drainage areas.

The frontal boundary slowly pushes into the coastal waters by Tuesday, however, a low pressure system moving to the northeast between the middle Texas coast and the Coastal Plains likely keep the heavy rainfall between those areas. Therefore, the potential for life threatening flooding across the Flood Watch area continues. The surface low pressure system and associated high moisture levels push to the east Texas coast and away from our area with dry airmass on the back side of the system. This setup brings dry conditions across most of South Central Texas Tuesday night into the overnight hours.

LONG TERM

(Wednesday through next Monday) Issued at 1142 AM CDT Mon Jun 15 2026

The dry weather pattern continues on Wednesday and Thursday with high temperatures in the 80s and 90s and even 100-104 degrees along the Rio Grande Plains. Elevated heat index values are forecast for the middle of the week into early next week. Some locations along the Coastal Plains could get a shower or two during the afternoon as the seabreeze moves to the north. Rain chances do return across most of South Central Texas on Friday into the weekend as a frontal boundary pushes from the Coastal Plains into our area and another boundary pushes from central Texas into the Hill Country.

AVIATION

(00Z TAFS) Issued at 642 PM CDT Mon Jun 15 2026

Most of the convection has ended for the evening. There will be about a 20% chance for showers or thunderstorms through the evening. All terminals will be VFR. IFR ceilings and MVFR visibilities will develop overnight. There will also continue to be low chances for convection, but they are too low to include in the TAFs. Better chances for storms will come in Tuesday morning and continue through the afternoon.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 74 86 74 91 / 50 60 10 0 Austin Bergstrom Intl Airport 74 85 74 90 / 50 70 10 0 New Braunfels Muni Airport 73 84 72 90 / 60 80 10 0 Burnet Muni Airport 71 85 72 90 / 30 40 0 0 Del Rio Intl Airport 73 91 74 96 / 30 10 0 0 Georgetown Muni Airport 72 85 72 90 / 40 50 0 0 Hondo Muni Airport 72 85 71 90 / 60 50 10 0 San Marcos Muni Airport 73 84 73 90 / 60 80 10 0 La Grange - Fayette Regional 74 83 74 88 / 70 80 10 20 San Antonio Intl Airport 74 85 73 90 / 60 60 10 0 Stinson Muni Airport 74 84 73 90 / 70 70 10 0

EWX WATCHES/WARNINGS/ADVISORIES

Flood Watch through Tuesday evening for TXZ193-194-207>209- 217>225-228.