Climate Physical Risk

Singapore's National Environment Agency is serving preventive notices under the Transboundary Haze Pollution Act on seven Indonesian companies whose land is linked to the fires, ordering them to deploy firefighters, stop burning and submit plans to put the fires out, Environment Minister Grace Fu said on October 16. Smoke from fires in Kalimantan and southern Sumatra pushed Singapore's 24-hour PSI to 225 in the central region that evening, with three regions in the 'very unhealthy' band; air quality first crossed the unhealthy threshold on September 4, the first time since 2023. In Indonesia, students across Kalimantan and Sumatra have protested over fires the Guardian describes as the most intense in more than a decade.

NASA's 35-year sea-level altimetry record puts the October 2026 El Niño alongside the 1997–98 and 2015–16 events, and JPL's Josh Willis says it is on track to be bigger than 1997. As in 1997, high warm water is pressing against South America, a pattern that brought heavy rain to California and the southern U.S. that winter; the 2015–16 event instead drove flooding in Mexico and the southeastern U.S. NOAA's October 8 outlook gives an 83% chance of a strong to very strong El Niño through March 2027.

Why it matters: Strong El Niños have historically brought fires in Indonesia and the Amazon, drought and crop failure in southern Africa, and coastal flooding in Southern California.

The IUCN's reassessment of reef-building corals finds 340 of 774 species with sufficient data, 44%, threatened with extinction, up from a third in 2008, and climate change decides the status of more than 90% of the highest-risk species. The data run only to 2020, so the authors expect the true share is higher after the 2023–2025 global bleaching event and this year's El Niño. A separate Red List assessment of reef ecosystems, reported by the New York Times on October 22, classifies most shallow coral reefs as critically endangered and finds 96% could collapse within 50 years if warming continues apace.

California released its Fifth Climate Change Assessment on October 19, led by the Governor's Office of Land Use and Climate Innovation with the Energy Commission, the Natural Resources Agency and the Strategic Growth Council. According to the Union of Concerned Scientists' summary, April snowpack shrinks by about 40% by mid-century and about 60% by 2100, swings between very wet and very dry years grow more frequent, and about 7 million Californians already live in flood-risk areas. The San Joaquin Valley report projects up to about 3°C more warming by 2100 and a loss of up to about 40% of irrigated acreage; statewide warming reaches 1.9–2.4°C by 2050.

Why it matters: The assessment is the state's reference set of projections for water planning, so its snowpack and wet-dry numbers will shape allocation and storage decisions.

Neptune Insurance Holdings, the Florida-based private flood insurer, reported third-quarter revenue up 34% to a record $59.6 million, with written premium up 31% to $132.7 million. Premium in force rose 32% to $450 million and policies in force 29% to more than 336,000, while net income rose 50% to $17.3 million. The company raised its 2026 revenue forecast to $204 million and guided to $238 million for 2027, citing record new business despite a slow housing market and a below-average Atlantic hurricane season.

Why it matters: The growth tracks the shift of U.S. flood risk from the federal program toward private capacity.

Universal Insurance Holdings, one of Florida's largest homeowners insurers, reported third-quarter net income of $52.5 million, up 32%, on revenue of $439 million, as its combined ratio improved to 91% from 96.4%. Its ceded premium ratio fell to 27.6% from 32.7% under the reinsurance programme that began June 1, and direct premiums written in Florida fell 3.3% while other states grew 18.5%. After the quarter closed, Hurricane Isaias made landfall near Destin as a Category 2 storm; chief executive Stephen Donaghy said claims so far were less significant than first expected.