textproduct: Corpus Christi

KEY MESSAGES

Updated at 156 PM CDT Tue Apr 21 2026

- Minor coastal flooding and moderate to high risk of rip currents possible through the week.

- Shower and thunderstorm chances are low to medium tonight into Wednesday, ending by Wednesday night.

DISCUSSION

Issued at 156 PM CDT Tue Apr 21 2026

Scattered showers and isolated thunderstorms will continue to move northward across S TX through the afternoon. Rain chances are forecast to decrease to around 10-20% tonight as an upper level short wave exits to the east. Rain chances increase to 10-40% Wednesday with the 40% generally north and east of I37 in response to another weak upper level disturbance. A mid/upper level ridge builds across the region beginning Wednesday night ending rain chances through the remainder of the week.

With ridging aloft and less cloud cover, temperatures will increase back into the 80s by Wednesday with highs approaching 100 across the western areas by the weekend.

Although tide levels are expected to gradually decrease through the week, minor coastal flooding will remain possible during times of high tide through the week. The PETSS indicates tide levels to remain above 1.5ft MSL at Aransas Pass during high tide through Friday. Swell periods are forecast to range between 7-8 seconds, which will aid in pushing the water up to the dunes. The swells may also lead to a moderate to high rip current risk at times.

AVIATION

(18Z TAFS) Issued at 156 PM CDT Tue Apr 21 2026

A mix of MVFR and VFR conditions can be expected to continue through the afternoon as scattered showers and a few thunderstorms move northward. The best chance for prevailing VFR CIGs will be around the LRD and COT TAF sites where the rain chances are more isolated. Isolated showers expected overnight, becoming scattered again Wed, mainly north and east of I37. A mix of MVFR and IFR conditions conditions are forecast this evening and overnight. Conditions are expected to improve to VFR levels by Wednesday afternoon as rain chances diminish.

FIRE WEATHER

Issued at 156 PM CDT Tue Apr 21 2026

The chance for wetting rains continues through Wednesday, then ends by Wednesday night. Minimum RH values will remain generally above 30- 40% through the period. Temperatures will climb back into the 80s by Wednesday, increasing to well above normal by the latter half of the week. Overall, fire weather concerns are not anticipated at this time.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 70 83 70 84 / 10 30 0 0 Victoria 65 83 67 85 / 30 40 10 0 Laredo 71 88 70 93 / 10 0 0 0 Alice 68 85 68 88 / 10 30 0 0 Rockport 71 82 72 83 / 20 40 10 0 Cotulla 69 87 68 90 / 20 10 0 0 Kingsville 69 83 69 85 / 10 20 0 0 Navy Corpus 73 80 73 80 / 10 30 0 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...Coastal Flood Advisory until 7 PM CDT this evening for TXZ345- 442-443-447.

GM...None.