Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Sparks

How Climate Change Is Supercharging Hurricane Milton

And made Helene so much worse, according to new reports from Climate Central and World Weather Attribution.

Helene destruction.
Heatmap Illustration/Getty Images

Contrary to recent rumor, the U.S. government cannot direct major hurricanes like Helene and Milton toward red states. According to two new rapid attribution studies by World Weather Attribution and Climate Central, however, human actors almost certainly made the storms a lot worse through the burning of fossil fuels.

A storm like Hurricane Helene, which has killed at least 227 people so far and caused close to $50 billion in estimated property losses across the southeast, is about two-and-a-half times more likely in the region today compared to what would be expected in a “cooler pre-industrial climate,” WWA found. That means Helene, the kind of storm one would expect to see once every 130 years on average, is now expected to develop at a rate of about once every 53 years. Additionally, WWA researchers determined that extreme rainfall from Helene was 70% more likely and 10% heavier in the Appalachians and about 40% more likely in the southern Appalachian region, where many of the deaths occurred, due to climate change.

“Americans shouldn’t have to fear hurricanes more violent than Helene — we have all the knowledge and technology needed to lower demand and replace oil, gas, and coal with renewable energy,” Friederike Otto, the lead of WWA and a senior lecturer in climate science at Imperial College London, said in a statement. “But vitally, we need the political will.” Alarmingly, the attribution study found that storms could drop an additional 10% or more rain on average as soon as the 2050s if warming reaches 2 degrees Celsius.

WWA’s study is not the first to be released on Hurricane Helene, but it was still produced incredibly quickly and has not been peer reviewed. Just a few weeks ago, the group issued a correction on a report estimating the contribution of climate change to recent flooding in Europe.

Separately, Climate Central looked at Hurricane Milton, which already has the distinction of being the fifth strongest Atlantic storm on record. The nonprofit’s findings show that Milton’s rapid intensification — one of the fastest and most powerful instances of the phenomenon in history — is primarily due to high sea surface temperatures in the weeks before Milton developed, which was made at least 400 times more likely by climate change and up to 800 times more likely. (WWA relied on Climate Central’s Climate Shift Index for oceans for its research, but found “climate change made the unusually hot sea surface temperature about 200-500 times more likely.”)

Attribution science is incredibly tricky, especially for a storm system like a hurricane that has variables ranging from wind shear to the El Niño–Southern Oscillation to ocean temperatures and jet stream variations. When I spoke to a member of the WWA team earlier this year, I was told the organization specifically avoids attributing the intensification of any individual hurricane — in theory, one of the more straightforward relationships — to climate change because of the relatively limited historical modeling available. Even something like rainfall “is not necessarily correlated to the magnitude of the floods that you see because there are other factors,” WWA’s Clair Barnes previously told me — for example, the steep-sided mountains and hollows of western North Carolina, which served as funnels for rainfall to an especially devastating effect.

But regarding the relationship between hurricanes and climate change more generally, “We’re relatively confident that storms will get more intense” in a warming world, Gabriel Vecchi, a Princeton geoscientist, explained on a recent episode of Heatmap’s Shift Key podcast. “And we’re really confident that storms will get wetter.”

Helene and Milton hammer that point home: once-in-a-generation storms can now arrive on back-to-back weekends. You can almost understand the impulse to devise a zany explanation as to why. Only, the truth is far simpler than cloud seeding or space lasers: a warmer atmosphere makes for warmer oceans, which make for wetter, more intense storms. And while hurricane seasons eventually end, global temperatures haven’t stopped going up. That, perhaps, is the more terrifying subtext of the attribution studies: There will be more Miltons and Helenes.

You’re out of free articles.

Subscribe today to experience Heatmap’s expert analysis 
of climate change, clean energy, and sustainability.
To continue reading
Create a free account or sign in to unlock more free articles.
or
Please enter an email address
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Sparks

Trump’s Pro-Gas, Transition-Skeptical Pick to Run the Nation’s Energy Data

Tristan Abbey would come to Washington from a Texas think tank that argues peak oil is way off base.

Donald Trump.
Heatmap Illustration/Getty Images

Donald Trump’s pick to run the Energy Information Administration works for a think tank that denies the existence of an energy transition.

The Energy Information Administration is the nation’s primary energy fuel and power forecasting agency. Since its inception in 1977, EIA has become a go-to source of data for many U.S. businesses, analysts, and policymakers alike. The agency’s previous administrators have been relatively apolitical academics and industry experts, including under the first Trump administration, whose EIA administrator came to the role from a faculty position at Rice University. The office’s current acting administrator is Stephen Nalley, who was appointed deputy administrator by Trump in 2018 after serving in various other roles at the agency.

Keep reading...Show less
Blue
Sparks

Why Are AI Stocks Falling Again?

Microsoft is canceling data center leases, according to a Wall Street analyst.

Microsoft headquarters.
Heatmap Illustration/Getty Images

The artificial intelligence industry is experiencing another TD Cowen shock.

The whole spectrum of companies connected to artificial intelligence — the companies that design the chips, that supply the power, that make the generation equipment — shuddered Wednesday when the brokerage released another note from analysts pointing to evidence that Microsoft was giving up on its data center leases.

Keep reading...Show less
Sparks

The IRS Is Taking Mercy on Electric Car Buyers

The tax agency reopened its online portal to allow dealerships to register sales retroactively.

The IRS building.
Heatmap Illustration/Getty Images

As recently as last month, some electric vehicle buyers were running into roadblocks when they tried to claim the EV tax credit on their 2024 returns. Their claims were rejected, it turned out, because the dealership where they bought their EV never registered the sale with the Internal Revenue Service.

On Wednesday, the IRS instituted a fix: It reopened the online portal for dealerships to report these sales retroactively.

Keep reading...Show less
Green