Skip to content
Talk to a Broker
All posts

What a Historic El Niño Could Mean for Houston Families in 2027

Picture of Charles D. McDade, LUTCF By   ·  11 minute read
The Texas Insurance Decision Guide

What a Historic El Niño Could Mean for Houston Families in 2027

  • By Charles McDade, LUTCF
  • Published August 27, 2026. Updated October 16, 2026
  • Flood Insurance

NOAA has called an El Niño Advisory and put the odds of a historic event high. Fewer Atlantic hurricanes, a wetter Texas winter and spring, and a flood policy that takes thirty days to start. What we know, where we are, and what comes next, as of October 16, 2026.

super-el-nino-houston-flood-risk-hero

The answer

A historic El Niño means a quieter Atlantic and a wetter Texas, and for a Houston family it moves one decision forward. Flood coverage in force before the wet months, because the policy takes thirty days to start. NOAA's October 8 advisory says a strong to very strong El Niño is likely through March 2027, with high odds of the strongest one on record since 1950. In more than 80 percent of El Niño events over the past century, the Gulf Coast from Texas to Florida ran wetter than average from October through March. No pattern guarantees a flood. This one raises the odds, and this page is refreshed as it moves. The Atlantic gets quieter. Texas gets wetter. The policy still takes thirty days.

Part one. What we know

El Niño, in plain English

El Niño is warm water. Every few years the surface of the eastern Pacific runs warmer than normal for months, and the atmosphere above it reorganizes. NOAA's hurricane researchers put it in one sentence. El Niño causes the Pacific jet stream to move south and spread further east. That one shift does two things at once, and Houston sits where both land. One warm ocean, one shifted jet stream, and Houston on the wet side of it.

The cause

Warm water across the eastern Pacific

Surface temperatures run above normal for months, and NOAA declares El Niño once the atmosphere has answered the warmth.

Which pushes
The engine

The Pacific jet stream moves south and spreads east

In NOAA's words. The river of wind that steers storms across North America shifts toward the southern tier.

And that does two things at once
Over the Atlantic

More wind shear, fewer hurricanes

El Niño lessens Atlantic hurricane activity through increased vertical wind shear, which tears at storms before they organize.

Over Texas

A wetter October through March

The shifted jet steers storm systems across the Gulf Coast, and Texas to Florida ran wetter than average in more than 80 percent of El Niño events in the past 100 years.

More than 80 percentof El Niño events in the past century brought a wetter than average Gulf Coast, Texas to Florida, October through March, per NOAA Climate.gov
The seven strongestEl Niño events since 1950, taken together, brought wetter than normal conditions along the southern tier, the Southeast most of all
Two surprisesthe 2015 to 2016 and 1957 to 1958 winters ran drier than expected over parts of the southern U.S. Houston's 2015 to 2016 floods came in spring and fall instead

What it did here last time

Climate.gov puts the 2015 to 2016 El Niño on par with the record events of 1982 and 1997. Its winter ran drier than the pattern promised, and Houston flooded anyway, in May, in October, in April, and in May again. March 2015 through August 2016 is Houston's wettest eighteen months on record, and five of the ten biggest weather events the Houston weather office logged for the decade sit inside that window. The quiet-season page pins each one. Here they are against the hurricane that followed. Five floods without a hurricane, inside one El Niño.

Inches of rain at the highest point measured, five El Niño floods and the hurricane that followed

  • Webster, May 12, 2015
  • Memorial Day, May 25, 2015, Brays Bayou at Beltway 8
  • Halloween, October 31, 2015, eastern Harris County
  • Tax Day, April 17 to 18, 2016, Cypress Creek at Sharp
  • Memorial Day, May 26 to 27, 2016, Brenham
  • Harvey, August 25 to 29, 2017
National Weather Service Houston/Galveston figures, the highest total measured in each event. Nobody needs sixty inches to lose a house. The five El Niño floods did it with eleven to twenty.
Part two. Where we are

Where we are, as of October 16, 2026

NOAA's Climate Prediction Center issues its El Niño discussion on the second Thursday of each month. This page is built on the October 8 reading and follows the pattern through the spring. As of October 16, the pattern is here, it is strengthening, and the peak lands in Houston's winter.

  • 01ENSO status
    The readingEl Niño Advisory. El Niño conditions observed and expected to continue
    The sourceNOAA Climate Prediction Center, October 8, 2026
    What it meansThe pattern is here and strengthening
  • 02Strength
    The readingA strong to very strong El Niño likely through January to March 2027, greater than an 83 percent chance
    The sourceThe same discussion
    What it meansThe peak months are Houston's winter months
  • 03Odds of a historic event
    The reading83 percent for October through December that this one exceeds every El Niño on record since 1950
    The sourceThe same discussion
    What it meansPossibly the strongest one on the books
  • 04The Atlantic season
    The readingNOAA's May outlook called for 8 to 14 named storms and a 55 percent chance of a below normal season. Edouard, the fifth named storm, came ashore September 1
    The sourceNOAA, May 21, 2026, and the National Hurricane Center
    What it meansThe quiet forecast held, and Harris County still took two to four inches from it
  • 05Next check
    The readingSpring 2027, after the wet months
    The sourceThis page
    What it meansRefreshed as the pattern moves

Texas this year

Every part of Texas plans for its own weather. Near the Gulf, the hurricane. Further north, the hail. Flood keeps to no region, and this year made the point before the El Niño winter even started. July filled Lake Travis for the first time since 2019, ten feet in a single day, and it sat at 94 percent in mid October. The season El Niño favors, winter and early spring, has not started. The water came early this year, and it came to every part of the state.

Hill CountryJuly 2026. Seven flash flood emergencies in one week, the Pedernales at major flood stage, Lake Travis full for the first time since 2019
East TexasSeptember 2026. Edouard, more than 24 inches near Thicket, 12 to 16 inches along the Liberty County line, 2 to 4 inches on Harris County
North TexasLate September 2026. Polo's remnants, stretches of interstate closed in Dallas, Amarillo's wettest September on record at 6.42 inches
Part three. What comes next

The thirty days, on this year's calendar

An NFIP flood policy takes effect thirty days after you buy it. The exceptions are a mortgage closing, where it starts the day you close, and a map change, where the wait drops to one day for thirteen months. Private flood carriers set their own waiting periods. The peak months of this El Niño are January through March, and Houston's spring floods, Tax Day and Memorial Day among them, came in April and May. Every date on this calendar moves thirty days later than the day you call.

Bought today, October 16

The policy is in force before the El Niño winter begins.

Bought the week the forecast makes the news

A policy bought the week a storm enters the Gulf does not cover that storm. A January purchase starts in February.

Bought at a mortgage closing

The one exception every Houston buyer should use. Flood at closing starts at closing.

Which policy pays for which water

Two policies share a Houston storm. The home policy excludes rising water, and the flood policy excludes most of what the home policy pays. Here is where each kind of water lands, from the NFIP's own lists. Two policies, one storm, and the line between them is the word flood.

  • 01Rising water from a bayou, a creek, or the street
    Who paysThe flood policy, building and contents as separate lines
    The other policyThe home policy excludes flood water
    The limit or the catchUp to 250,000 dollars on the building and 100,000 dollars on contents through the NFIP, more where a private flood carrier writes it
  • 02Storm surge from the Gulf
    Who paysThe flood policy
    The other policyThe home policy excludes surge as flood water
    The limit or the catchThe same limits and the same thirty day wait
  • 03Rain driven through a roof the wind opened
    Who paysThe home policy, subject to the wind and hail deductible
    The other policyWind-driven rain or flood water draws the line
    The limit or the catchThe deductible, often a percentage of the dwelling limit
  • 04Water backing up through a drain
    Who paysThe home policy, only with the water backup endorsement
    The other policyThe flood policy pays a backup only when flooding caused it, never one from clogged pipes
    The limit or the catchA line to read on both policies before the storm
  • 05Belongings
    Who paysThe flood policy's contents line
    The other policyA building policy alone pays nothing for furniture, clothing, or electronics
    The limit or the catchUp to 100,000 dollars under the NFIP, art and furs capped at 2,500 dollars
  • 06A place to stay while the house dries
    Who paysThe home policy's loss of use, for a loss the home policy covers
    The other policyThe NFIP policy excludes temporary housing and additional living expenses
    The limit or the catchThe gap families find the week after the water, and a reason private flood gets a look

Before the wet months

Six steps, and the order matters. Coverage first, because it is the only step with a thirty day clock. Then the inventory and the records, which cost an afternoon and pay at claim time. Coverage first. Then the inventory and the records.

This month

  • Buy or review flood coverage. Compare the NFIP and the private market on the waiting period, the limits, contents, loss of use, the deductible, and the exclusions.
  • Look up the zone on the Flood Zone Finder, and read it as a starting point.
  • Read the home policy's water language against the flood policy, so the two are not reading the same line.

Before the first storm

  • Walk the house with a phone and make a video inventory, then store it somewhere other than the phone.
  • Move the irreplaceable things up, the photographs, the documents, the keepsakes.
  • Keep digital copies of the deed, the policies, and the declarations pages where you can reach them from a hotel.

What happens when you call

You want one thing from this page. To know what you have, what you lack, and what it costs, without the fear sell.

  1. 01

    Send both declarations pages

    The home policy, and the flood policy if you have one. If you do not, the address is enough to start. Email works, contact@mcdadeins.com.

    Free
  2. 02

    We read both for the water

    The flood exclusion, the water backup endorsement, the wind deductible, the loss of use line, and the flood policy's limits and waiting period, side by side. Then we price the flood policy through the NFIP and the private market.

    On our desk
  3. 03

    You get the gaps in writing

    What you have, what you lack, and the number for closing each gap, with the dates. Keep it, change it, or add to it, with the whole picture in front of you.

    Your call

Both declarations pages, one read, the gaps in writing.

A map is a starting point

In 2015 a family in Meyerland asked me whether they needed flood insurance when the bank did not require it. Their home sat outside the mapped high-risk zone, and I told them what I tell everyone, that the map is where the conversation starts. They carried the policy. When the water came, the policy helped them put the house back together. I have carried that year with me through every El Niño discussion since, and this one is forecast stronger. A flood map is a starting point. It is not a force field.

Charles McDade, LUTCF

El Niño and Houston flood questions

Does El Niño mean fewer hurricanes for Houston?

Usually, yes. El Niño increases vertical wind shear across the Atlantic, which tears at storms before they organize. NOAA's May outlook called for a below normal season for that reason, and the Atlantic has been quiet. Fewer is a count, and one storm can still come ashore at the Texas line, as Edouard did on September 1.

Does El Niño increase flood risk in Texas?

It raises the odds of a wet winter and early spring. In more than 80 percent of El Niño events over the past century, the Gulf Coast from Texas to Florida ran wetter than average from October through March. No pattern guarantees a flood, and the last strong one gave Houston its wettest eighteen months on record.

Does homeowners insurance cover flooding in Houston?

No. A Texas home policy excludes rising water, storm surge, and overflow from a bayou or a street. Flood coverage is a separate policy through the NFIP or a private flood carrier, and belongings are a separate line on it. A drain backup is its own question, paid by the home policy only with the water backup endorsement.

How long does it take to get flood insurance?

Thirty days from purchase for an NFIP policy, with two exceptions. A policy bought at a mortgage closing starts the day you close, and a policy bought within thirteen months of a map change starts in one day. Private flood carriers set their own waiting periods. Why you cannot wait for a named storm walks the calendar.

Do I need flood insurance outside a high risk flood zone?

The lender does not require it there, and the water does not read the map. Almost one third of NFIP claims from 2014 through 2024 came from outside the high-risk zones, and the Flood Control District's own line is that everyone lives in a flood zone. Whether to carry it, or to drop it in a quiet season, is the question with its own page, with the whole trade laid out.

What should a Houston family do before the wetter months?

Put the flood policy in force first, because it is the only step with a thirty day clock, and the peak months of this El Niño are January through March. Then the video inventory, the irreplaceable things moved up, and digital copies of the records. Then read the home policy and the flood policy together, so you know which one pays for which water before the storm asks.

Keep going

Sources worth opening before you decide

The purpose is to help the reader ask better questions before claim time. This page is education, and the policy language controls at claim time.

Let's close the flood gap before the rain

The advisory is out. The policy takes thirty days. The wet months come next.

Bring both declarations pages, the home policy and the flood policy if you have one, or just the address if you do not. We read the water language on both, price the flood policy through the NFIP and the private market, and tell you what you have, what you lack, and what it costs, without the fear sell. We translate the contract before you sign for another year.

Talk to a Broker See My Flood Price

The conversation is free. The decision is yours. No broker fees for personal lines clients.