--- title: "Cascading Effects" canonical: "https://anchor.is/docket/issue/21/systems" publication: "The Docket" publisher: "The Docket" language: "en-US" guide: "https://anchor.is/docket/llms.txt" permalink: "https://anchor.is/docket/issue/21/systems" issue: 21 section: "systems" description: "How climate reshapes business, insurance, and infrastructure affecting everyday lives" authors: ["Seth D. Carrington"] published: 2026-03-02 updated: 2026-02-25 articles: 20 --- # The Docket > The Docket is a weekly publication about the decisions climate change is already putting in front of Americans: whether to buy the generator, whether the flood insurance is enough, whether to stay in the city you love. It follows the people making those choices now. It treats climate anxiety as a reasonable response to real conditions. It won't tell you what to do, but it shows the tradeoffs clearly. [Read on the website]() ## Issue 21 — Cascading Effects How climate reshapes business, insurance, and infrastructure affecting everyday lives ### The Divergence - [The Premium on the Kitchen Table]() — By [Seth D. Carrington]() · Published 2026-02-24 · Format: The Divergence An insurance agent in eastern Iowa got dropped by his own carrier last year. Couldn't find coverage for the house he's been selling coverage from for decades. Four companies have pulled out of the state entirely, dumping tens of thousands of policyholders. For every dollar Iowa insurers collected in homeowner premiums in 2023, they paid out a dollar forty-four. ### The Hidden Sunshade - [The Invisible Sunshade That Made Your Insurance Model Wrong]() — Published 2026-02-24 For decades, soot and sulfur from smokestacks and ship exhaust drifted into the atmosphere and did something nobody planned: they reflected sunlight. Seeded brighter clouds. Cooled the planet by roughly half a degree Celsius. Every climate model your insurer relies on was calibrated during this artificially cooled period. ### Two Markets, Two Realities Millions of American homeowners watched their premiums spike last year, or opened a cancellation letter, or quietly dropped coverage because the math stopped working. The reasonable assumption is that the insurance industry shares some of that pain. It doesn't. The industry is in the middle of one of its most profitable stretches in decades. Capital is pouring in. Investors are competing to take on catastrophe risk. Reinsurance rates are falling. The six numbers below tell both halves of that story, placed side by side so the gap between them is impossible to miss. This is what a system looks like when it's working exactly as redesigned. - **Homeowners Paid Twenty-One Billion More Since 2021** — [Source]() — Published 2026-02-24 Tag: Premium Surge American homeowners spent $21 billion more on insurance in 2024 than in 2021, a 24% jump across 95% of ZIP codes. The average household absorbed $648 in new annual costs for the same coverage on the same house. - **Insurers Collected Thirty-Five Billion in Underwriting Profit** — [Source]() — Published 2026-02-24 Tag: Industry Profits The U.S. property and casualty industry posted $35.3 billion in underwriting profit through the first nine months of 2025, nearly nine times the prior year's figure. The second quarter alone set a record for this century. - **Two Million Policies Cancelled Over Five Years** — [Source]() — Published 2026-02-24 Tag: Policy Cancellations Insurers cancelled roughly two million homeowner policies between 2018 and 2023, according to Senate Budget Committee data. Most families got a form letter and no replacement option. The pace quickened every year. - **Reinsurance Capital Hit a Record $838 Billion** — [Source]() — Published 2026-02-24 Tag: Capital Flood Global reinsurance capital reached $838 billion by year-end 2025, with reinsurers beating their cost of equity by 8.6 percentage points for a third straight year. Rates fell 15% at January renewals. Capital sees opportunity where homeowners see ruin. - **Six Million Homeowners Now Carry Zero Insurance** — [Source]() — Published 2026-02-24 Tag: Coverage Gap Roughly six million U.S. homeowners have dropped coverage entirely, leaving $1.6 trillion in property value exposed. One in thirteen American homes rides bare. Many are low-income families who simply couldn't keep paying. - **Catastrophe Bond Market Surged to Sixty-One Billion** — [Source]() — Published 2026-02-24 Tag: Disaster Bets Catastrophe bond issuance hit $25.6 billion in 2025, a record, pushing the outstanding market to $61.3 billion. Investors have never been more eager to wager on the same disasters that are repricing your neighborhood. ### Further Reading - **Climate change presses on: Devastating wildfires and intense thunderstorms exacerbate losses for insurers** — [Source]() — Published 2026-02-24 Munich Re's definitive 2025 numbers: $224 billion in global disaster losses, $108 billion insured. The headline finding is that no major hurricane made U.S. landfall, yet insured losses topped $100 billion for the sixth consecutive year. The culprits were wildfires and severe convective storms, the "non-peak perils" that actuarial models historically treated as background noise. If you read one industry report this year, this is the one that shows the baseline has moved. - **Flood risk in a changing climate: What risk managers need to know** — [Source]() — Published 2026-02-24 Willis Towers Watson lays out the pluvial flooding problem in plain terms: rain that overwhelms drainage systems, pools in places FEMA never mapped, and destroys homes that were never supposed to flood. The report is written for risk managers, but the core finding matters for anyone holding a mortgage. FEMA's flood maps were built for rivers and coasts. The flooding that's actually driving losses now comes from the sky, and the mapping infrastructure to capture it barely exists. - **Choosing the Right Home Is Tough. Climate Change Is Making It Harder.** — [Source]() — Published 2026-02-24 Inside Climate News reports on Zillow's quiet decision to pull climate risk scores from its listings after industry pushback, and First Street Foundation's projection that climate exposure has already erased $1.47 trillion in U.S. property value. The piece captures a genuinely strange moment: the data exists, the models are improving, and the platforms that could deliver risk information to buyers at the moment of decision are choosing not to. - **How Climate Risks Are Putting Home Insurance Out of Reach** — [Source]() — Published 2026-02-24 Gilbert Gaul's deeply reported narrative for Yale Environment 360 follows the insurance collapse on Sanibel Island, Florida, where premiums tripled and carriers vanished after Hurricane Ian. The piece is worth reading for the specificity alone: real families, real numbers, real conversations with agents who can't find anyone willing to write a policy. What happened on Sanibel is the coastal template for the crisis now spreading to places that never thought of themselves as disaster zones. - **The growing void in the U.S. homeowners insurance market** — [Source]() — Published 2026-02-24 Peer-reviewed research published in Nature's npj Climate Action documenting what local news has been reporting in fragments: premiums climbing 50% or more in Iowa, Arkansas, Utah, and other interior states far from any coastline. The paper provides the statistical backbone for a story that's been hard to tell at scale because it's happening one renewal notice at a time. - **As Climate Crisis Upended Homeowners Insurance, the Industry Resisted Regulation** — [Source]() — Published 2026-02-24 Capital & Main and Times of San Diego report on InfluenceMap findings that insurance industry lobbying groups were actively fighting climate-related regulation while the LA wildfires burned. One trade group told regulators that catastrophes "occur reasonably rarely." The timing is almost too perfect, but the deeper story is structural: the industry profits from pricing climate risk while lobbying to prevent the regulatory frameworks that would force transparent disclosure of that same risk. ### Where the Models Break Your flood map is wrong. Your insurance premium is a guess. The climate model your mortgage lender used to approve your loan was probably built for weather that no longer exists. These are six specific places where the gap between modeled risk and observed reality has already cracked open wide enough to ruin someone's finances. None of them involve a hurricane. Most of them involve tools and maps that millions of Americans trust without knowing how badly those tools lag behind the actual climate. Each fracture below names a place, a number, and a consequence. Together they describe a pricing system running on outdated assumptions while the weather rewrites the rules in real time. - **Kerr County Flooded Outside Every FEMA Flood Map** — [Source]() — Published 2026-02-24 Tag: Unmapped Floods Flash floods hit Kerr County, Texas, in July 2025. Only 2.2% of residents carried flood insurance. FEMA maps simply don't capture pluvial flooding from intense rainfall. First Street counts 14.6 million properties at substantial flood risk nationally. FEMA maps show 8.7 million. The gap is where people drown uninsured. - **No Hurricane Landed but $166 Billion Disappeared** — [Source]() — Published 2026-02-24 Tag: Hidden Losses Not a single hurricane made U.S. landfall in 2025. Hail, severe storms, flash floods, and wildfires still produced $166 billion in global losses. Munich Re calls it the costliest year on record for these perils. The industry's term for them is "secondary." The bills are not. - **Two Flood Models Give Los Angeles Opposite Answers** — [Source]() — Published 2026-02-24 Tag: Dueling Models Bloomberg found that First Street and UC Irvine's flood models produced "nearly polar opposite" findings for Los Angeles, flagging different neighborhoods as highest risk. LA County's public works director warned this could mean building flood defenses in the wrong places. One city, two maps, two realities. - **Cleaner Ship Fuel Revealed a Hidden Climate Mask** — [Source]() — Published 2026-02-24 Tag: Warming Undercount Regulations cut sulfur from ship fuel in 2020, removing an accidental cooling effect that had suppressed warming for decades. Hansen et al. argue climate models systematically underestimate warming as pollution's sunshade recedes. The finding is contested. The implication is not small: every insurer pricing 30-year risk may be working from an optimistic baseline. - **$1.47 Trillion in Home Value at Stake** — [Source]() — Published 2026-02-24 Tag: Market Mispricing First Street projects $1.47 trillion in climate-driven real estate losses over 30 years, touching 84% of U.S. neighborhoods. Meanwhile, 31% of high-risk neighborhoods are still growing. People are buying in. The market hasn't priced what the models already show, and the models themselves are probably conservative. - **Iowa Faces Premiums That Were Built for Coasts** — [Source]() — Published 2026-02-24 Tag: Midwest Shock U.S. severe thunderstorm insured losses hit $42 billion in 2025, well above the $29 billion ten-year average. States like Iowa, Arkansas, and Utah are absorbing premium increases up to 50%, driven by hail and convective storms that federal risk categories still classify as secondary perils. Coastal pricing has arrived inland. ## Other sections in Issue 21 - [Human Stories]() - [Emerging Science]() - [Future Tense]() - [Climate Past]() - [The Lab]() ## More - [Publication guide]() - [Issue archive]()