textproduct: Corpus Christi

KEY MESSAGES

Updated at 120 AM CDT Sat Jun 20 2026

- Marginal Risk of excessive rainfall across S TX today.

- Medium (35-50%) chance for showers and thunderstorms with heavy rainfall continues today. Localized flooding is possible.

- Moderate Rip Current Risk Today.

- Heat Advisory conditions possible Sunday and Monday.

DISCUSSION

Issued at 120 AM CDT Sat Jun 20 2026

Medium chance of showers and thunderstorms continues today. Some storms may produce heavy rainfall possibly leading to localized flooding, especially low lying areas, creeks, streams and urban areas. This is due to efficient heavy rainfall processes with a fairly saturated environment. PWATs of 2.0-2.2 inches are forecast to remain across the region and interact with a mid level low draped across the western portions of the CWA. In addition, the environment will be moderately unstable with little to no CIN. The caveat will be the mid level high pressure centered over the northwest gulf. Some models suggest the high pressure will nudge westward, bringing drier mid levels to the eastern portions of the CWA today. Timing of the drier air will determine whether the Coastal Bend and Victoria Crossroads will get heavy rain or not. These areas have saturated soil from previous rains and will be prone to flash flooding. But if the drier mid levels move across the area early enough, then rain chances and rainfall amounts will be lower. Rain chances are expected to decrease this evening.

Models are in fair agreement that the mid level high will become more prominent for the upcoming week, leading to very low (<5%) rain chances. Can not rule out a few weak showers along the sea breeze each afternoon, as low level moisture will remain in place.

The low level moisture combined with highs in the 90s to near 100 out west will lead to heat indices 105-113 across the region for Sunday and Monday and Heat Advisories may be needed for portions of S TX. A moderate risk of heat related impacts can be expected through the period.

The rip current risk will be moderate today due to 8 second swell periods. Minor Coastal Flooding is not anticipated due to lower astronomical tides and a S-SE wind direction over the gulf waters.

AVIATION

(06Z TAFS) Issued at 120 AM CDT Sat Jun 20 2026

Showers and thunderstorms moving across S TX are expected to diminish through 08-10Z, but light showers will remain possible across ALI, CRP and VCT through sunrise. Additional showers and thunderstorms are expected to begin redeveloping around 15Z mid morning and continue through the afternoon. Rain chances are expected to decrease after 22-24Z. MVFR conditions are expected to prevail through sunrise with brief VFR CIGs at times, then VFR conditions are expected by mid morning. However, IFR/LIFR conditions and gusty winds will be possible in and around the convection.

MARINE

Issued at 120 AM CDT Sat Jun 20 2026

Moderate to fresh (BF 4-5) south to southeast winds can be expected today through Sunday, then strengthen Sunday night with Small Craft Advisory conditions possible. A moderate to fresh onshore flow can be expected through next week. Winds could be occasionally be strong (BF 6) across the southern Bays and Nearshore waters at times, particularly in the late afternoon. A low to medium chance of showers and thunderstorms can be expected today through Sunday, then drier conditions next week.

FIRE WEATHER

Issued at 120 AM CDT Sat Jun 20 2026

Fire weather concerns will remain low through the period due to elevated relative humidity values and wet fuels. Medium rain chances expected today and tonight. Rain chances diminish Sunday with very low chances through next week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 90 81 91 81 / 30 20 10 0 Victoria 90 78 92 79 / 40 30 10 0 Laredo 94 78 97 79 / 30 30 0 0 Alice 90 78 94 78 / 40 20 10 0 Rockport 91 83 91 83 / 30 30 10 0 Cotulla 93 78 97 79 / 40 20 0 0 Kingsville 89 79 93 79 / 40 20 10 0 Navy Corpus 89 84 90 84 / 30 30 10 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...None. GM...None.