El Niño winter in Atlanta
What is El Niño, in plain English?
Every few years, the ocean in the middle of the Pacific near the equator gets warmer than normal. That's El Niño. It sounds far away, but it changes the path of the jet stream, the river of wind that steers storms across the country.
In a strong El Niño winter, that jet stream tends to dip south and run right across the Gulf and the Southeast. More storms ride along it, which is why El Niño winters in Georgia are often wetter and cloudier than usual.
Most people have never had to think about it. This year is worth paying attention to.
What forecasters are saying
- NOAA has an El Niño Advisory in effect and expects a strong-to-very strong El Niño through January to March 2027.
- NOAA gives better than an 8 in 10 chance it lasts that long, and says it could become a historic event.
- NOAA's winter outlook leans wetter than normal across Georgia, with the highest odds in south Georgia.
- Georgia's state agricultural climatologist expects a wetter, cooler winter, with effects possibly starting in November.
Sources: NOAA Climate Prediction Center, Oct 8, 2026; NOAA 90-day outlook, Sep 17, 2026; UGA climatologist Pam Knox via RFD-TV, Oct 12, 2026.
Why a wet winter matters for your power
El Niño shifts the odds. It doesn't guarantee any one storm. But here's how a stormier winter turns into a dark house.
Rain + a cold snap = ice
Atlanta gets its worst winter outages when rain falls while temperatures sit right around freezing. The National Weather Service says just a quarter inch of ice is enough to snap branches and bring down power lines, even less if it's windy.
Trees come down on lines
Our tall pines and oaks are part of what makes metro Atlanta beautiful. Coated in ice, they're also what pulls down the lines. Add wind, and outages spread fast.
Winter outages last
When ice is widespread, crews can't fix everything at once. Winter Storm Cora in January 2025 caused more than 366,000 Georgia Power outages, and Winter Storm Fern in January 2026 caused more than 214,000.
Sources: National Weather Service; America's Electric Cooperatives; Georgia Power historic storms. Forecasters also note that no single storm can be blamed on El Niño, and north Georgia's ice depends on cold air lining up with the rain.
Don’t get left in the dark
A Generac home standby generator turns on by itself within seconds of an outage and keeps your heat, lights, fridge and Wi-Fi running until the power comes back.
- Starts automatically, even if you're away
- Runs on natural gas or propane
- Installed by our family
Your pre-winter checklist
Whether or not you have a generator, a few simple steps now make a winter outage much easier.
For every home
- Put battery-backup carbon monoxide alarms on every level
- Keep a few days of water, food, medicine and flashlights
- Keep phones and power banks charged when storms are coming
- Fill your car's gas tank before a storm
- Keep thermometers in the fridge and freezer
- Make a plan for anyone who relies on medical equipment
If you have a standby generator
- Get a pre-winter maintenance check
- Make sure the battery is charged and the terminals are clean (most last 3 to 5 years)
- Keep an extra quart of the right oil on hand
- Keep 3 feet clear around the unit, and clear ice and snow from the vents
- If you're on propane, check the tank level
- Ask about a cold-weather kit for the battery and oil
If you use a portable generator
- Run it outside only, at least 20 feet from windows, doors and the garage
- Never in a garage, basement, shed or porch, even with doors open
- Never heat your home with a stove, oven, grill or dryer
- Test your carbon monoxide alarms every month
The CPSC says about 85 people a year die from portable generator carbon monoxide, mostly at home after storms.
Sources: FEMA / Ready.gov power outage guide; U.S. Consumer Product Safety Commission; Generac storm prep; Generac winter prep.
Your winter questions, answered
What is El Niño?
Is this really a "Super El Niño"?
Does El Niño mean Atlanta will get an ice storm?
When are the effects expected?
I already have a generator. What should I do?
How long does it take to get a standby generator installed?
Ready before the next storm?
Tell us a little about your home and we'll call or text you to set up a free site visit.
Form not showing? Open the quote form here. Prefer to talk? Call or text 404-593-6308. Need repairs or maintenance? Schedule a service with Southern Power Experts.