textproduct: Corpus Christi

KEY MESSAGES

Updated at 126 AM CDT Sun Jun 21 2026

- Low to medium (10-35%) chance for showers and thunderstorms with heavy rainfall continues this morning, mainly across the Coastal Bend and Victoria Crossroads. Localized flooding is possible.

- Moderate heat-related impacts through the period.

- Small Craft Advisory conditions possible tonight.

DISCUSSION

Issued at 126 AM CDT Sun Jun 21 2026

The chance of showers and thunderstorms continues this morning, mainly across the Coastal Bend and Victoria Crossroads. Some storms may produce heavy rainfall with localized flooding possible, especially low lying areas, creeks, streams and urban areas. Models indicate drier mid levels will advect across the region and decrease rain chances by this afternoon.

Models are in good agreement that the mid level high pressure over the northwest gulf and another high over northern Mexico will push the mid level low currently over the Brush Country southward resulting in a more prominent mid level high across the region for the upcoming week. Rain chances are forecast to be nil to very low (<5%), but can not rule out a weak shower or two along the sea breeze each afternoon, as low level moisture will remain in place.

The low level moisture combined with highs in the 90s will lead to heat indices 105-110 across the region for today through Tuesday. A few locations may briefly reach 112-114. A moderate risk of heat related impacts can be expected. Models prog drying in the low levels by mid week with heat indices a tad lower ranging 100-109.

AVIATION

(06Z TAFS) Issued at 126 AM CDT Sun Jun 21 2026

A round of showers and storms is moving through the eastern part of South Texas late tonight. Will keep a PROB30 for thunderstorms for eastern sites through at least sunrise, though, current trends suggested maybe for ALI and CRP it could be done earlier than that. Low chance for a shower at LRD/COT early in the period, then should be mainly dry. MVFR CIGS tonight will improve to VFR conditions during the day Sunday. Have not added CIGS for late in the period yet, but will likely be needed after the end of this period. As we get some breaks in the cloud cover this afternoon expect gusty southeasterly winds to develop, again mainly east.

MARINE

Issued at 126 AM CDT Sun Jun 21 2026

A fresh (BF 5) south to southeast flow can be expected today becoming fresh to occasionally strong (BF 5-6) tonight. A Small Craft Advisory may be needed tonight. A moderate to fresh onshore flow can be expected Monday and continues through the work week. Winds could 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 this morning, then decreasing this afternoon. Drier conditions expected through the work week.

FIRE WEATHER

Issued at 126 AM CDT Sun Jun 21 2026

Fire weather concerns will remain low through the period due to elevated relative humidity values and wet fuels. Medium rain chances expected this morning, then diminishing this afternoon. Drier conditions expected through the week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 90 80 91 80 / 20 0 0 0 Victoria 89 79 92 79 / 30 0 0 0 Laredo 94 78 97 78 / 10 0 0 0 Alice 90 77 94 78 / 20 0 0 0 Rockport 90 83 92 83 / 40 0 0 0 Cotulla 92 78 96 77 / 10 0 0 0 Kingsville 90 78 93 79 / 10 0 0 0 Navy Corpus 89 84 90 84 / 30 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

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