textproduct: Austin/San Antonio

KEY MESSAGES

- Level 1 of 4 risk for excessive rainfall over the Coastal Plains today.

- Showery weather continues through Wednesday evening.

- Cool today with highs in the low to mid 80s with a warming trend for the latter part of the week, upcoming weekend, and early next week.

SHORT TERM

(Today through Thursday) Issued at 132 AM CDT Wed Apr 22 2026

Light rain is likely to continue mainly along the I-35 Corridor overnight through at least noon Wednesday. Also, developing overnight, patchy to areas of fog across the I-35 Corridor and southern Edwards Plateau. Can't rule out a few places where visibility could drop to a half mile or so. Otherwise, Wednesday's highs are forecast to stay in the low to mid 80s for the most part. Shower and thunderstorm activity returns mainly for areas east of Intestate 35 and the Coastal Plains in the afternoon through early evening. With elevated pwats in place, can't rule a quick heavy shower or storm producing half to an inch of rainfall.

Even though the forecast calls for dry conditions along the Rio Grande on Wednesday, like to mention that a few storms are likely to develop ahead of the dry-line and then move over northeast Mexico. With the steering flow being from west to east over that region, can't rule out some of these storms to get closer to the Rio Grande late afternoon into the evening.

As the night progresses, an upper level northwest flow aloft takes place and reminds through Thursday morning before becoming a zonal flow. At the surface, southerly flow is forecast to stay in control and brings back the mid to upper 80s.

LONG TERM

(Thursday night through Tuesday) Issued at 132 AM CDT Wed Apr 22 2026

Dry and warm conditions are forecast for Friday into the weekend. The Spring-like temperatures are back with highs in the mid to upper 80s and low 90s. Rain chances through this period are very little to none. However, any storm that manages to develop could produce heavy downpours as it taps into the moist southerly flow. Mornings are likely to be cloudy but those clouds break in the afternoon for at least partly cloudy skies.

AVIATION

(12Z TAFS) Issued at 538 AM CDT Wed Apr 22 2026

All terminals are LIFR with SAT and DRT below minimums. These conditions will likely continue until mid-morning. There will be slow improvement through the late morning and early afternoon until VFR returns by late afternoon. Low clouds will return late tonight, but should only drop to MVFR.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 82 68 85 69 / 40 10 0 10 Austin Bergstrom Intl Airport 82 67 84 69 / 40 10 0 10 New Braunfels Muni Airport 82 65 85 68 / 40 10 0 10 Burnet Muni Airport 80 65 83 68 / 20 0 0 10 Del Rio Intl Airport 85 69 87 69 / 0 0 0 10 Georgetown Muni Airport 81 66 83 69 / 20 10 0 10 Hondo Muni Airport 81 65 85 67 / 10 10 0 10 San Marcos Muni Airport 82 66 84 68 / 40 10 0 10 La Grange - Fayette Regional 81 68 85 69 / 50 10 0 0 San Antonio Intl Airport 82 67 85 69 / 30 10 0 10 Stinson Muni Airport 83 68 86 70 / 30 10 0 10

EWX WATCHES/WARNINGS/ADVISORIES

None.