Every two to seven years, the Pacific Ocean near the equator warms up and stays warm for months. That warming is El Niño, and the one building now, El Niño 2026, is shaping up to be unusually strong. El Niño changes the weather a long way from the Pacific, including here on the Gulf Coast. Some barely register. The big ones, in 1982-83, 1997-98 and 2015-16, are remembered for the weather they brought. The 1997-98 winter was the wettest the Southeast had ever recorded.

This one could top all three. On October 8, NOAA put the odds at 83% that it becomes the strongest El Niño since 1950 before the year is out. If you own a home or run a business in the Southeast, plan for a wet winter, with more heavy rain, more flooding and more severe weather between October and March. The worst of it usually arrives after December.

El Niño 2026: why this one could be the strongest on record

It's still getting stronger. The NOAA Climate Prediction Center's October 8 update expects a strong to very strong El Niño to last through January to March 2027. The Weather Channel reported the same day that water in the eastern equatorial Pacific was running 2.3°C above average, with some pockets about 4°C warmer. Few El Niños in more than 75 years of records have come close to that.

What is El Niño, in plain words?

The U.S. Geological Survey describes El Niño as a warming of the ocean surface in the central and eastern tropical Pacific. NOAA adds that it usually lasts nine to 12 months. The warm water bends the Pacific jet stream south, and the jet stream steers storms.

So the effects follow a familiar pattern. NOAA says El Niño winters tend to run wetter and cooler across the southern U.S., from central California to Florida and up the East Coast, while the northern states get a warmer, drier winter.

What is a super El Niño?

You'll see "super El Niño" in the news. It's an informal name for the strongest events, like 1997-98, not a NOAA category. NOAA's own measure is whether an El Niño reaches historic strength, meaning stronger than anything since 1950, and it gives this one an 83% chance of getting there between October and December.

What past strong El Niños brought to the Southeast

NOAA's Climate.gov considers 1997-98 the likely record holder among the three biggest. That winter, the Southeast logged its wettest December-through-February on record, and record rain soaked parts of central and northeast Florida, according to NOAA's National Climatic Data Center.

Then came the night of February 22, 1998. Tornadoes tore across central Florida, killing 42 people and injuring more than 260. The National Weather Service called it the deadliest tornado outbreak in Florida's history. No two El Niños play out the same way, and nobody can promise a repeat. But Floridians who lived through that winter don't need convincing to prepare.

How does El Niño affect Florida and the Gulf Coast?

Mostly, it means rain. In more than 80% of El Niño events over the past 100 years, the Gulf Coast from Texas to Florida had a wetter-than-average winter, NOAA's Climate.gov found. During a strong El Niño the southern branch of the jet stream gets "turbocharged," as The Weather Channel put it, and more storms ride it across the South.

Florida feels it most. The National Weather Service in Tallahassee says El Niño generally brings the state above-average rain in fall, winter and spring. Florida has averaged 23.3 flood events a year in El Niño years, against 4.9 in neutral ones, and the extra storminess raises the risk of severe weather. El Niño isn't the only thing that shapes a winter, so treat these as odds, not a forecast for your street. They're still the El Niño effects worth planning around.

Hurricane Isaias and El Niño: what's happening now

Isaias arrived in a year when El Niño had kept the Atlantic unusually calm. El Niño didn't cause it, and the wet winter El Niño usually brings to the Southeast hasn't even started yet.

Why the 2026 hurricane season was quiet

El Niño makes it harder for hurricanes to form in the Atlantic. The Associated Press reported on October 8 that the season "has been unusually quiet this year because of a strong El Niño, which disrupts storm formation over that ocean." Isaias ended up as one of the latest first hurricanes of any Atlantic season on record. A quiet El Niño hurricane season can still deliver a dangerous storm, and this one did.

If Isaias damaged your home or business

When the National Hurricane Center issued its October 9 advisory, Isaias was a Category 3 hurricane, with a hurricane warning from Ocean Springs, Mississippi, to the Bay/Gulf County line in Florida and dangerous storm surge forecast along the coast. CONFIRM: landfall time, place and impacts after landfall Don't go back until local officials say it's safe. Our guide on what to do after a hurricane walks through the first days in detail.

When you do go back, stay out of standing water and away from downed lines, and keep the generator outside. Take photos of everything before you start cleaning, because your insurer will want them. Then get the drying started as soon as it's safe. What you do in those first couple of days decides how much of the house or building can be saved.

How ServiceMaster Restore helps homes through El Niño

We help before the rain, when water gets in, and for as long as the cleanup and repairs take. That includes emergency response at any hour, water extraction and drying, mold remediation, storm repairs, and working with your insurance company.

When water gets in: 24/7 emergency response

An El Niño winter rarely hits a house all at once. More often it's one heavy rain after another, each finding the same clogged gutter, the hairline crack in the foundation or the tired spot on the roof. Sometimes it's worse: storm surge, or a section of roof peeled back by wind. ServiceMaster Restore answers 24/7, 365 days a year, for water damage restoration and storm and weather damage restoration. That covers hurricanes and tropical storms, flooding from heavy rain or storm surge, and wind and hail damage.

Drying, mold prevention and repairs

Mold needs moisture, so the faster a home dries, the better. The EPA says that if wet materials are dried within 24 to 48 hours, in most cases mold will not grow. Our technicians start with water extraction, using submersible pumps to get standing water out.

Then comes structural drying, with air movers and dehumidifiers running until the walls and floors are dry, plus air scrubbers to keep the air clean while the work goes on. Every job gets its own plan to bring the home back to its pre-loss condition, including mold remediation if the water has already been there too long.

Working with your insurance company

One storm claim is stressful enough. Two or three in a season is worse. ServiceMaster Restore manages the claim side with you and your insurer, from the first inspection to the last repair, so the paperwork doesn't stall the work. You can read more about working with your insurance company. Every policy is different, so call your insurer before you assume anything is covered.

How ServiceMaster Restore helps businesses through El Niño

During El Niño, a business needs a plan in place before the storm and people on site fast after it. Our Pre-Loss Planning takes care of the plan. The Priority Response Program handles the response, with crews on site within 2 to 4 hours as conditions allow.

Before the storm: Pre-Loss Planning and business continuity

Even a single lost day costs a business money, and it costs employees too. With Pre-Loss Planning, our team works with you on a business continuity plan, with steps to limit damage and a clear path to reopening, so nobody is improvising when the water comes in.

When a storm hits: the Priority Response Program

The Priority Response Program is for the hours right after a storm. It runs 24/7/365, and crews are on site within 2 to 4 hours as conditions allow. Response isn't tiered, so a client is never pushed down the list because the loss looks small. Equipment can be staged ahead of a storm, and you pay nothing for it unless it's used. You also get a dedicated account management team, one point of contact before, during and after the loss.

Commercial water and storm damage restoration

Every day a building stays closed costs something, whether that's sales, payroll for people who can't work, or customers who find somewhere else. Water in a commercial building also hides well, inside walls, under flooring and in the HVAC system, so pumping out what you can see isn't enough. Our commercial water damage restoration teams track down hidden moisture and dry it out. After severe weather, commercial storm damage restoration adds debris removal along with extraction and structural drying. Business policies vary a lot, so check yours.

How to prepare for El Niño: a checklist for homes and businesses

Most of the work that keeps water out costs little and takes an afternoon, as long as it happens before the first big storm.

For homes

1. Clean the gutters and extend the downspouts so water lands well away from the foundation.
2. Look at how the soil slopes. It should fall away from the house. Seal any foundation cracks while you're out there.
3. Test the sump pump, and add a battery backup so it keeps running when the power goes out.
4. Have a roofer check the roof and flashing. Don't go up there yourself during a storm or right after one.
5. Move valuables up off the basement and ground floors, and take photos of what you own for insurance.
6. Read your policy. FloodSmart says most homeowners and renters policies don't cover flood, and a new flood insurance policy usually takes 30 days to kick in, so don't wait for the forecast.
7. Keep an emergency kit ready, turn on weather alerts, and save the number of a local restoration company in your phone.

For businesses

1. Update the business continuity plan, including who makes the calls and who gets called.
2. Get critical equipment, inventory and records off the floor, and back up data offsite.
3. Go over commercial property, flood and business interruption coverage with your agent.
4. Walk the building and find where stormwater gets in, usually roofs, drains and low entrances. Keep sandbags or barriers ready for those spots.
5. Make sure employees and tenants know who to call, where to go and how you'll reach them if the building closes.
6. Line up a restoration partner now, so priority response is already arranged when a storm hits.

Why homes and businesses call ServiceMaster Restore

ServiceMaster Restore has more than 65 years of restoration experience and more than 850 locally owned locations across North America. Our Disaster Operations Center watches weather trends and severe events, which lets local teams get ready while a storm is still on its way. You can read more about why ServiceMaster Restore is who homeowners and businesses call when disaster strikes.

Frequently asked questions

Has there been an El Niño this strong before?

A few have come close. The strongest since 1950 were in 1982-83, 1997-98 and 2015-16, and NOAA thinks there's a good chance this one passes them before the end of the year.

Will El Niño bring more storms to Florida and the Gulf Coast?

Probably. El Niño winters are usually wetter than average along the Gulf Coast, and the extra storminess raises the severe-weather risk in Florida, so expect more heavy rain and more flooding.

Does El Niño cause hurricanes?

No. It usually holds Atlantic hurricanes back, which is why the 2026 season was so quiet. Its bigger effect on the Southeast shows up in winter.

How can ServiceMaster Restore help my home during El Niño?

We respond at any hour, extract water and dry the structure, handle mold remediation and storm repairs, and work with your insurance company on the claim.

How can ServiceMaster Restore help my business during El Niño?

Pre-Loss Planning gets your continuity plan ready before a storm. After one, the Priority Response Program provides 24/7/365 response, with crews on site within 2 to 4 hours as conditions allow.

Get ready for El Niño 2026

El Niño 2026 is likely to make this a wet, stormy winter across the Gulf Coast and Southeast. The gutters, the sump pump and the insurance policy are all easier to deal with now than in February. And if water does get in, at home or at work, find your local ServiceMaster Restore and we'll take it from there.