Table of Contents
This three-part series, written by Principal Architect Patrick Chopson, AIA, uses FEMA’s National Risk Index to examine how hurricane resilience varies dramatically across five Gulf and Southeast coastal metros — and why the 2026 below-average seasonal forecast is the wrong signal for owners and developers to act on.
Part One establishes the data and the core finding: hurricane risk varies by more than 6x across these five markets, and the design responses each one demands are not interchangeable. Parts Two and Three dig deeper into city-specific design briefs and the investment case for resilient design.
Every major early-season forecast for the 2026 Atlantic hurricane season points the same direction. Colorado State University, which has issued the benchmark seasonal hurricane forecast since 1984, projects 13 named storms, 6 hurricanes, and 2 major hurricanes — roughly 75% of the long-term average. The Weather Channel concurs. NOAA’s Climate Prediction Center confirms that La Niña has ended and that El Niño is expected to develop through the summer, with some long-range models pointing toward a “Super El Niño” with Pacific sea surface temperatures more than 2°C above average. CSU expects tropical Atlantic wind shear this year to run the second-highest since 1981, behind only the 2015 season.
CSU’s probability of a major hurricane making landfall on the U.S. coastline in 2026: 32%. The 1880–2020 historical average is 43%. Caribbean major-landfall probability is also suppressed: 35%, versus a 47% long-term average.
Source: CSU TC-RAMS forecast, April 9, 2026. Historical: 1880-2020.
Owners and developers across the Gulf and Southeast coast are reading the same headlines. Many of them are quietly deciding the resilience conversation can wait another year.
The federal government’s own building-level risk data says they’re wrong, in four specific markets, by margins large enough to redraw underwriting maps.
Five coastal markets, five very different risk profiles
Per dollar of building value exposed, New Orleans carries 4.4 times the hurricane-specific expected annual loss of Tampa and 6.3 times the loss of Houston. Charleston carries 3.7 times Tampa. Those are not marginal differences. They are the difference between five distinct underwriting categories that the market routinely treats as one.
Source: FEMA National Risk Index v1.20, released December 2025. Analysis across 2,435 census tracts.
Source: FEMA National Risk Index v1.20 (December 2025)
The numbers come from FEMA’s National Risk Index — the federal government’s most complete public dataset on natural hazard risk. The Expected Annual Loss (EAL) metric is a long-run actuarial estimate: it answers what an insurer covering every building in a tract against hurricane wind and storm surge would need to collect each year, on average, to break even on claims. It is not a prediction for any single year. It is the structural exposure that sits underneath every coastal real estate decision.
Three findings in the FEMA data cut against the consensus forecast.
Houston is not really a hurricane market in the FEMA data.
Harris County’s hurricane loss rate is the lowest of the five. Houston’s dominant natural hazard is inland flooding, which accounts for 51% of Harris County’s total expected annual loss. Hurricane wind and storm surge accounts for just 21%. FEMA counts these as separate hazards — rainfall-driven flooding from a hurricane like Harvey shows up in the inland flood column, not the hurricane column. Houston’s true hurricane-season exposure is higher than 21%, but the data doesn’t let us cleanly separate the two. The “Houston is a hurricane city” framing in most coastal-risk coverage gets the threat profile wrong. Houston is a flood city that occasionally also experiences hurricanes — and El Niño years typically bring elevated winter and early-spring precipitation to the Gulf Coast, which compounds the city’s structural water-management problem rather than reducing it.
Miami’s post-Andrew building code reduces the gap but does not close it.
Miami-Dade’s hurricane loss rate per dollar of building value ($922) remains higher than Tampa’s ($779), despite Florida’s adoption of the strongest hurricane-resistant building code in the country after Hurricane Andrew in 1992. The code works — Miami-Dade’s loss rate would be dramatically worse without it. But the city’s underlying hazard exposure (proximity to common hurricane tracks, peak wind speed potential, coastline length) is severe enough that even best-in-country code standards leave a meaningful residual.
The most concentrated exposure is not where the capital goes.
Hurricane wind and storm surge account for 73% of Orleans Parish’s total expected annual loss and 56% of Charleston County’s. Both cities have normalized loss rates that put them in a different tier from the Florida and Texas markets in the federal data. Both are routinely discussed alongside Miami and Tampa in coastal capital allocation conversations as if they represented comparable risks. They do not.
Why the 2026 forecast is the wrong signal to act on
Three reasons.
Seasonal forecasts measure basin activity. FEMA measures building-level structural exposure.
They are different units measured on different timescales. A single below-average year doesn’t move the structural number — and insurance carriers, catastrophe modelers, and institutional lenders all underwrite to the structural number, not to the seasonal forecast.
“It only takes one storm.”
That is the verbatim caveat every responsible forecaster, including CSU’s research team, attaches to the 2026 outlook. Hurricane Andrew, the storm that reshaped Florida building code, hit Miami in 1992 in a below-average season that produced only six named storms. Hurricane Melissa hit Jamaica in October 2025 as a Category 5 in a season that ran only 105% of the long-term average — $9 billion in damage, 95 fatalities. The seasonal forecast does not protect the asset on the wrong side of a single landfall.
Insurance underwriting in 2026 prices buildings, not zip codes.
Carriers that returned to coastal markets through 2024 and 2025 are differentiating aggressively at the building level on roof spec, opening protection, structural connections, and documented flood mitigation. The owner who reads “below-average forecast” and skips the resilience capex finds out the next year that the renewal still came in 10% to 15% higher anyway — because the catastrophe modelers updated their forward-looking frameworks and the carriers pass that through regardless of what any one season looks like.
What changes when you look at this building-by-building
Five markets. Five completely different design problems. A resilience strategy built for Miami will underperform in Houston. What works in New Orleans won’t address Charleston’s particular problem. The FEMA data points to specific architectural responses that differ by city in ways that affect insurance placement, lender terms, tenant retention, and exit value over a 10-year hold.
Part Two breaks down each market: what the data reveals about the dominant hazard, what design responses actually address it, and how the building type changes the answer.
Appendix: methodology and sources
FEMA National Risk Index (NRI) v1.20, released December 2025. The NRI’s Expected Annual Loss (EAL) metric is a long-run actuarial estimate of natural hazard cost per census tract, computed from three inputs per hazard: historical frequency, current exposure (building value, population, agriculture), and a damage curve drawn from the SHELDUS database at Arizona State University. EAL is summed across 18 hazards to produce a tract total; this analysis isolates the hurricane component (wind and storm surge from named tropical cyclones). Source: fema.gov/about/openfema/data-sets/national-risk-index-data.
Census tracts analyzed: 2,435 across Harris County, TX (Houston); Miami-Dade County, FL; Hillsborough County, FL (Tampa); Orleans Parish, LA (New Orleans); and Charleston County, SC.
2026 Atlantic hurricane season forecast data: Colorado State University Tropical Cyclone, Radar, Atmospheric Modeling and Software (TC-RAMS) Team April 9, 2026 outlook; The Weather Channel April 16, 2026 outlook; NOAA Climate Prediction Center ENSO update. CSU’s full April outlook is at tropical.colostate.edu.
Key caveats:
- NRI uses historical hazard frequency. If climate change is shifting hurricane frequency or intensity beyond the historical record, NRI likely understates forward-looking risk. First Street Foundation data is a useful forward-looking complement.
- EAL is a long-run average. Any given year — including 2026 — can look nothing like it.
- Tract averages hide building-level variance. A specific building can face wildly different risk than its tract average.
- Seasonal hurricane forecasts measure basin-wide activity (ACE, named storm counts, major hurricane probability) and are not predictions of specific landfall locations or losses at specific buildings.
The numbers in this series are defensible orders of magnitude for use in underwriting and design decisions. They are not precise forecasts of any single year’s outcomes.
About cove’s Principal Architect Patrick Chopson, AIA
Patrick Chopson, AIA, is Co-Founder and Principal of cove, an AI-powered architecture firm transforming how buildings are designed and delivered. A licensed architect with 20+ years of experience, technologist and building scientist, Patrick focuses on the intersection of AI and Architecture.
He previously co-founded the building performance consultancy Pattern r+d and co-authored Build Like It’s the End of the World (Wiley, 2025), a guide to decarbonizing AEC. His work has been featured in Architect Magazine, TechCrunch, and ArchDaily, and he regularly collaborates with developers and industry leaders on next-generation solutions.