Heavy Rain to Soak South Texas This Weekend: 4 to 8 Inches Possible Locally Sunday Into Monday
South Texas is in for a soaking weekend, with heavy rain and a risk of flash flooding on Saturday, November 7, and Sunday, November 8, 2026. The National Weather Service's Weather Prediction Center has placed parts of South Central and South Texas under a Slight Risk of excessive rainfall — level 2 of 4 — from 6 a.m. Sunday to 6 a.m. Monday, Central time.
A storm system moving in from Mexico is expected to drop 2 to 3 inches of rain across much of the region by Monday, with a few spots topping 5 inches and local totals of 4 to 8 inches possible, according to Texas Storm Chasers and the Weather Prediction Center. Rain starts Saturday night out west in the Borderland and Big Bend, then spreads east on Saturday, the National Weather Service office in Austin and San Antonio forecast, with widespread showers and storms from Saturday through Sunday night. The focus shifts south through Sunday afternoon and evening. AccuWeather says the risk may be greatest from near San Antonio and Laredo to Corpus Christi, stretching south to Brownsville.
Saturday's rain will soak the ground, so Sunday's downpours across the Rio Grande Plains, the Rio Grande Valley and the Coastal Bend will have nowhere to go, raising the flash-flood risk. The Storm Prediction Center forecasts no severe thunderstorms anywhere in the country Saturday or Sunday. Scattered to numerous non-severe storms are possible in southern, central and southwest Texas on Sunday.
Most of the country stays dry and quiet this week under a large high, while storms focus on the Pacific Northwest and South Texas. A strong cold front brings wind and rain to the Pacific Northwest on Saturday night, followed by repeated Pacific moisture plumes all week. From Tuesday on, the Weather Prediction Center expects "an active Pacific storm track" with deep troughing in the northeast Pacific.
In California, the National Weather Service office in Eureka said in an area forecast discussion issued at 12:27 a.m. PST on Saturday, November 7, that light rain is possible Saturday night and again Monday afternoon in Del Norte and Humboldt counties, that minor to near-moderate coastal flooding is likely around Humboldt Bay from November 8 to 10, and that breaking waves of 20 to 25 feet are expected Sunday and may coincide with a very high tide. San Diego is sunny on Saturday, November 7, with a high of 83 degrees Fahrenheit and a 0 percent chance of rain.
Source: U.S. National Weather Service
Published by GSM · USA (original Chinese edition)
Photo: 图：美国国家气象局天气预报中心11月7日发布的第2日超量降雨展望图，南德州为轻度风险区（黄色）。The NWS Weather Prediction Center Day 2 Excessive Rainfall Outlook issued Nov. 7, showing a Slight Risk over South Texas. (NOAA/NWS/WPC)
