Severe Weather Alerts for Southern U.S.
This week, tropical activity is expected to develop over the southern United States, prompting concerns about heavy rainfall and possible flooding in local communities.
The National Hurricane Center (NHC) has now indicated that there’s a 50% chance of this tropical phenomenon occurring within the next week.
Referred to as the 90L investment, this marks the first noteworthy system for the 2026 Atlantic hurricane season, according to weather analysts.
The term “investment” is commonly used during hurricane seasons across the Atlantic and Pacific basins and is assigned numbers ranging from 90 to 99, followed by a suffix denoting the region (such as “L” for Atlantic).
In the Gulf area, the main hazards include coastal wind gusts and tropical rainfall, raising concerns about flash flooding.
The prediction center suggests that confidence in the development of this system will grow in the coming days. Millions of residents from Texas to Georgia need to be on alert for flash flooding.
A flood threat has been classified as Level 3 out of 4 for several regions, with expectations of wide-ranging and possibly disastrous flooding from now through Thursday.
Meanwhile, deep tropical moisture, coupled with a cold front moving southward, will affect the region.
As this front advances south, forecasters predict it will weaken by midweek, resulting in ongoing daily rain showers and thunderstorms.
Following this, an upper-level circulation from northern Mexico is expected to introduce additional moisture from the Gulf, contributing to slow-moving thunderstorms particularly in states like Texas.
Major cities at heightened risk for flooding this week include Houston, Corpus Christi, and Jackson, Mississippi.
Heavy rainfall could be significant, with total accumulations of 5 to 8 inches projected by Tuesday.
In light of these forecasts, the NHC has issued warnings for the northwestern regions of the Gulf.
Both Houston and Corpus Christi are currently facing a Level 3 flood threat, with watches now in effect.
Despite forecasts suggesting that Tropical Storm Arthur may not materialize, there remains a serious risk for flash flooding.
Depending on the movement and timing of the potential weather system, flash flooding could be a concern into Friday, as some models project it might drift south into the weekend.
