textproduct: Corpus Christi

KEY MESSAGES

Updated at 635 PM CDT Mon Apr 20 2026

- Showers and a few thunderstorms through Tuesday (through Wednesday AM in the Victoria Crossroads).

- Minor Coastal Flooding possible this week.

DISCUSSION

Issued at 129 PM CDT Mon Apr 20 2026

Light to moderate showers on the radar this afternoon has been the main story this morning. A line of convergence extending from the western Gulf waters extending northwestward into the Coastal Bend has been on and off rain/mist to the area with the greatest rainfall totals today observed near the Baffin Bay/North Padre Island (radar estimated max 2-2.5 inches so far). These lower rainfall rates have allowed our soils to moisten up. So far this afternoon, most elevated storm activity has remained north of the Highway 59 corridor and closer to I-10. With these storms, rainfall rates have been more moderate, though moving through at a fast enough storm motion to prevent any hydrological issues. As we head into tonight, a shortwave disturbance will move through the state. The last few runs of the HRRR want to put the core of moderate to heavy rainfall closer to the I-10 corridor which would make sense with 500 hPa vorticity lobes moving through that area versus closer to the Hwy 59 corridor. As the LLJ starts feeding into the shortwave disturbance, this will support higher rainfall rates. For this reason, WPC has expanded the Marginal Risk (level 1 of 4) for the Victoria Crossroads and into the Coastal Bend.

One last shortwave pushes north of the region Wednesday keeping rain chances in the Victoria Crossroads before weak ridging develops for the latter half of the week, resulting in a drier trend and a warmer trend of temperatures.

Minor coastal flooding will remain a concern for the next several days, but with marine winds becoming more SE'ly, the general expectation is that each high tide cycle will see lesser impacts with time. That said, the coastal flooding observed is primarily being driven by high swell periods. Anyone visiting beaches should be aware of this and plan accordingly.

AVIATION

(00Z TAFS) Issued at 635 PM CDT Mon Apr 20 2026

Poor flight conditions continue tonight and into tomorrow with showers and low CIGS persisting for all sites. Some variability is expected (temporary VFR conditions at VCT this evening), but overall expect MVFR to IFR conditions through at least mid-day Tuesday. CIGS are expected to improve Tuesday afternoon.

MARINE

Issued at 129 PM CDT Mon Apr 20 2026

Easterly winds have hovered around 20 kts and continue to come down as winds become more onshore-oriented. Seas will decrease to near 4 ft through Thursday. Rain chances will continue through Wednesday afternoon and decreasing by Wednesday night.

FIRE WEATHER

Issued at 129 PM CDT Mon Apr 20 2026

Rain chances remain elevated through the first half of the week. Gradual warming through the remainder of the week can be expected. With elevated RH and expected rains, the fire weather concern is not expected to be elevated through this period.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 69 77 70 83 / 40 40 30 40 Victoria 61 77 65 83 / 60 50 40 60 Laredo 64 82 70 88 / 50 20 20 10 Alice 65 80 68 86 / 50 50 20 40 Rockport 69 80 70 83 / 40 40 30 50 Cotulla 62 79 68 86 / 80 30 30 20 Kingsville 67 78 68 84 / 40 50 20 30 Navy Corpus 71 77 72 80 / 40 40 30 40

CRP WATCHES/WARNINGS/ADVISORIES

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

Coastal Flood Advisory from 4 AM to 7 PM CDT Tuesday for TXZ345- 442-443-447.

GM...None.