textproduct: Corpus Christi

KEY MESSAGES

Updated at 640 PM CDT Fri Jun 19 2026

- Marginal to Slight risk of flash flooding tonight and Saturday, especially over the Rio Grande Plains

- Marginal risk (level 1 of 5) of strong to severe storms tonight into Saturday morning for the Brush Country

- Moderate risk of heat-related impacts through Tuesday, heat indices 105-110

- Moderate risk of rip currents this weekend, dangerous swimming conditions may exist, use caution in waters

DISCUSSION

Issued at 133 PM CDT Fri Jun 19 2026

A few light showers have popped up over South Texas along an outflow ahead of a stationary front stretching across Central to North Texas. Additional showers and storms may develop along this outflow (Live Oak to Duval), especially as the seabreeze converges this afternoon. Heading into tonight, a cut-off mid-level low develops over east Mexico, just south of Del Rio; this will act as a sufficient lifting mechanism along with near 99th percentile moisture (PWATs 2.25") to produce showers and thunderstorms along the Rio Grande. If these storms are able to become organized in a line with DCAPE greater than 1000 J/kg, damaging winds become a concern. There is a marginal risk of severe storms over the Brush Country for this reason, as well as a marginal to slight risk of flash flooding given the saturated soils from recent rainfall.

The aforementioned mid-level low will hang around the Rio Grande through the day Saturday, allowing for additional scattered showers and thunderstorms. Therefore, a marginal risk of flash flooding will continue across all of South Texas through Saturday. The low will then sag southward into Mexico Saturday night into Sunday, as a mid- level ridge builds over northern Mexico. This ridge will become the driver in our weather through next week, bringing warm and rain-free conditions across the region. Highs will generally range from around 90 along the coast to 100 over the Rio Grande Plains, with lows remaining in the 70s.

In addition to our severe and flash flooding concerns, heat will remain a threat. There is a moderate risk of heat-related impacts through Tuesday with heat indices ranging from 105-110 each afternoon. For heat safety tips please visit: weather.gov/heat. Lastly, moderate onshore flow and increased swell periods have led to a moderate risk of rip currents, please use caution if heading out into the waters and remember "wave, yell, swim parallel."

AVIATION

(00Z TAFS) Issued at 640 PM CDT Fri Jun 19 2026

A mix of VFR and MVFR conditions currently across S TX will become prevailing MVFR through the evening. Main concern will be showers and thunderstorms. Radar is currently indicating strong storms in Mexico west of LRD moving eastward. These storms are expected to reach LRD between 01-03Z and will likely continue through a majority of the night. Storms are expected to reach COT after 02Z. The Storms Prediction Center has a marginal risk of severe storms across these TAF sites and clips the ALI TAF site overnight. The storms are expected to weaken as they move toward the coast. There is a chance for additional showers and thunderstorms across S TX through Saturday afternoon. LIFR/IFR conditions and strong gusty winds can be expected in and around storms through most of the TAF cycle. Rain chances are expected to diminish Saturday evening.

MARINE

Issued at 133 PM CDT Fri Jun 19 2026

A moderate to fresh (BF 4-5) south to southeasterly breeze will generally persist through the middle of next week. There is a period of stronger winds Sunday through Monday that will likely result in advisory conditions with seas up to 7 feet. Outside of this period, seas will generally be between 4-6 feet. Low rain chances, 20-30%, Saturday and Saturday night will be followed by mainly rain-free conditions through the middle of next week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 81 90 81 91 / 30 40 20 0 Victoria 79 91 78 92 / 30 40 30 20 Laredo 78 95 78 98 / 50 30 30 0 Alice 79 91 78 94 / 30 50 30 10 Rockport 83 91 83 91 / 30 40 30 20 Cotulla 78 94 77 97 / 50 50 20 0 Kingsville 80 90 79 92 / 30 50 20 10 Navy Corpus 84 90 83 90 / 30 40 20 10

CRP WATCHES/WARNINGS/ADVISORIES

TX...Heat Advisory until 8 PM CDT this evening for TXZ229>234-239>247- 342>347-442-443-447.

GM...None.