A weather system in the Gulf of Mexico is getting stronger and could soon be named Tropical Storm Bertha, according to the National Hurricane Center (NHC). As of 10:00 AM CDT on July 20, 2026, the system had winds of 35 mph. It needs to reach 40 mph to earn a name, and forecasters say that is likely to happen soon.

The system was centered about 120 miles south of Panama City, Florida, and roughly 215 miles southeast of Mobile, Alabama. It was moving very slowly — just 3 mph — in what the NHC called an erratic, or unpredictable, path. Satellite images and radar showed it becoming better organized, which is a sign it may grow stronger.

Here's a quick way to picture it: tropical systems are like a ladder. A tropical depression is the bottom rung — it has the spinning shape of a storm but is still relatively weak. The next rung up is a tropical storm, which has stronger winds and gets a name. This system is one step away from that next rung.

The NHC has issued two types of alerts along the Gulf Coast. A storm surge watch — meaning there's a risk of dangerous coastal flooding from rising water within the next 48 hours — stretches from the Alabama-Florida border to the mouth of the Mississippi River in Louisiana. A tropical storm watch, which means tropical storm conditions are possible, extends from Florida's Big Bend region westward into Louisiana.

Flooding from rising water, called storm surge, could reach 2 to 4 feet from the mouth of the Mississippi to the Alabama-Florida border. Areas of coastal Louisiana and Florida, including Lake Pontchartrain, could see 1 to 3 feet.

Rain may be the biggest threat. The system is expected to drop 2 to 4 inches of rain from western Florida through the middle Texas coast through Friday, with some spots getting up to 8 inches. A tornado or two is also possible in Florida's Big Bend region on July 20.

The broader context here is that this storm is moving slowly and hugging the coastline rather than hitting one place and moving on. That means flooding and heavy rain could stretch across several states over several days. The low-lying areas of coastal Louisiana and the Florida Panhandle are especially vulnerable to rising water. Emergency managers are preparing for a multi-day event with a storm that could still change course or gain strength.

A second named storm in mid-July is normal for this time of year in the Gulf. But for people from Florida's Big Bend to the Mississippi River delta, the main worry is not wind — it is the combination of flooding, rain, and possible tornadoes lasting for days.