textproduct: Corpus Christi

UPDATE

Issued at 318 PM CDT Sun Oct 18 2026

Based on latest radar trends, I bumped up PoPs along the Rio Grande in Webb County through at least 00Z.

KEY MESSAGES

Issued at 318 PM CDT Sun Oct 18 2026

- Temperatures gradually warm to above normal by middle of the week.

- Low rain chances return Monday-Wednesday, with higher chances over the waters.

- Minor coastal flooding will remain possible through next week.

DISCUSSION

Issued at 121 PM CDT Sun Oct 18 2026

Cooler temperatures with highs in the upper 70s to low 80s will continue through Monday, before a gradual warming trend brings temperatures to above normal by Wednesday/Thursday as a mid to upper level ridge builds across the area.

Rain chances are very low today, though radar indicates a few showers possible moving across the Rio Grande from Mexico through midday. Any rain chances will continue to diminish this afternoon, with little to no chance for rain this afternoon. Moisture will increase through Monday, with PWAT values nearing 1.5-1.9 inches Monday night. This, combined with a shortwave expected to move to the northeast across South Texas will introduce a low chance of showers and thunderstorms for the Coastal Bend and Coastal Plains Monday through Wednesday, however, most locations will remain dry. By Wednesday night/Thursday, mid-level ridging becomes dominant and moisture decreases, reducing rain chances to near zero.

A northeast to east wind will continue across the Gulf waters through Thursday. While winds will generally stay between 5-15 knots, the persistence and swell periods around 8 seconds could lead to minor coastal flooding during times of high tide. Guidance does not indicate tidal levels reaching 2 ft MSL, but we will need to continue watching for any minor coastal flooding impacts.

AVIATION

(18Z TAFS) Issued at 121 PM CDT Sun Oct 18 2026

VFR conditions will prevail through the TAF cycle. Light winds northeasterly winds are expected.

MARINE

Issued at 121 PM CDT Sun Oct 18 2026

A moderate to occasionally fresh (BF 4-5) northeast to east breeze can be expected through the middle of the week. Low to medium chance of showers Monday through Wednesday.

FIRE WEATHER

Issued at 121 PM CDT Sun Oct 18 2026

Relative humidity values will slowly increase Monday through the rest of the week, limiting the fire weather risk. Winds are also expected to be light through the week. Fire weather conditions are not expected at this time.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 64 81 69 85 / 0 10 0 0 Victoria 56 83 60 87 / 0 0 0 0 Laredo 62 85 68 90 / 0 0 0 0 Alice 59 82 66 88 / 10 10 0 0 Rockport 68 82 70 84 / 0 10 0 0 Cotulla 59 83 65 88 / 0 0 0 0 Kingsville 62 82 67 86 / 10 10 10 0 Navy Corpus 71 80 75 82 / 10 20 10 0

CRP WATCHES/WARNINGS/ADVISORIES

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