“The fact that we’re melting out now, before we even have reached what historically has been the peak snow amount on the ground tells you everything you need to know,” CU Boulder's Jen Kay on the West's alarming wildfire risk. www.cnn.com/2026/03/27/w...

Prominent climate researcher Kate Marvel is leaving NASA, citing US attacks on Science www.bloomberg.com/news/article...

Thanks to @drkatemarvel.bsky.social for speaking with me this morning about why she decided to leave NASA, the work she was doing, her concerns about federal science and also what gives her hope. 🧪

My resignation letter

Emergency managers and meteorologists are about to lose access to a critical hurricane decision-making tool, known as HURREVAC, due to a lapsed contract. www.cnn.com/2026/03/24/w...

"The very fact that these reports feel too routine to cover is a testament to how far climate change has progressed, even just in the past decade. Unfortunately, we’ve built up some immunity to bad news about the climate." www.cnn.com/2026/03/23/c...

New analysis from me: UN climate assessment presents new info on Earth's growing energy imbalance thanks to record high amounts of climate pollution (chiefly CO2). www.cnn.com/2026/03/23/c...

New study finds the current heat wave in the West would be "virtually impossible" without human-caused climate pollution. We're on the verge of breaking an all-time March heat record for the US today/tmrw. www.cnn.com/2026/03/20/w...

"Meteorologists are reaching for superlatives to describe an oncoming heat wave so intense and rare for this time of year that it could leave some locations shattering their all-time temperature records for April before that month has even begun." www.cnn.com/2026/03/17/w...

NOAA issues an El Niño Watch, indicating conditions are favorable for it to develop during the next 6 months. More details (updated story), including info on its potential far-ranging impacts and intensity: www.cnn.com/2026/03/10/w...

Early signs of the formation of a potentially strong El Niño in the tropical Pacific have forecasters on edge. El Niño shifts weather patterns globally, increases global avg. temperatures and affects the Atlantic hurricane season. Stay tuned... www.cnn.com/2026/03/10/w... [NOAA img]

There are increasing signs that an El Niño, potentially an intense one, may develop in or by the Fall. This would cause global average temperatures to spike and shift global weather patterns. Uncertainty about such an event and its intensity is still significant, though. www.cnn.com/2026/03/10/w...

If you live in the eastern US like me you probably think this was one of the US' coldest winters on record. You'd be sorely mistaken. The record warmth out West overwhelmed the cold in the East during meteorological winter (Dec-Feb). www.cnn.com/2026/03/07/c...

My analysis of the fraught forecast for the ongoing blizzard, and the communications/public safety challenges it presented: www.cnn.com/2026/02/23/w...

"Rarely does such a powerful, blockbuster winter storm nearly sneak up on the most populous urban corridor in the US." www.cnn.com/2026/02/23/w...

Analysis: It's T-48 hours until a potential snowstorm along the Mid-Atlantic and Northeast coast, yet forecasters are struggling with some epic computer model disagreements. I take you behind the scenes to explain what's going on: www.cnn.com/2026/02/20/w...

Climate change has spurred scientists to come up with a new way of detecting and monitoring El Niño and La Niña, as the waters of the tropical Pacific rapidly warm. www.cnn.com/2026/02/17/w...

New: Trump admin moves to pull supercomputing center out of top weather and climate research center (NCAR) in Boulder, Colo. Part of its effort to "break up" the lab. www.cnn.com/2026/02/13/w...

“To have (skiing) go from something my kids could do any day of the week in wintertime… to something that is much more rare and variable is a real tragedy..." On declining snowfall and the winter Olympics, via @laurapaddison.bsky.social www.cnn.com/2026/02/10/c...

The East has been stuck in a long-duration cold snap lasting weeks on end, while the West has its worst snowpack in decades. The pattern that has led to this dichotomy is about to change: www.cnn.com/2026/02/06/w...

“This is a case study in near-instant, self-inflicted brand destruction.” www.newyorker.com/news/annals-...

If you are able, The Post's union has started a layoff fund for those fired by the world's fourth-richest man today. gofund.me/a310d0286

The latest on the weekend storm threat, from a team effort at CNN Weather. TL;DR: The snow threat is real for this weekend, details not yet clear, but if you live anywhere from the coastal Carolinas to Boston, you should be paying attention to forecasts the next few days www.cnn.com/2026/01/27/w...

Just gonna drop this here after that POTUS social post. On the topic of the cold and winter storm's relationship to global warming: www.cnn.com/2026/01/22/c...

How is this winter storm and brutal cold blast even possible in a warming climate? Paradoxically, the ingredients for this event may be more likely at least in part due to climate change... www.cnn.com/2026/01/22/c...

The heat energy we added to the ocean LAST YEAR is the equivalent of: - Detonating ten hydrogen bombs every minute - operating over a hundred large power plants continuously for all of written human history - Five times all the electricity human beings have ever used

A funny thing has happened on the way to Trump's gutting of America's climate and weather research budgets (NOAA/NASA)... Congress is about to say no. www.cnn.com/2026/01/14/c...

Much of the West is experiencing a snow drought, with record warmth as well. “This is up there with some of the worst [winters], if not the worst.” www.cnn.com/2026/01/09/c...

Nature, or rather, climate experts, always find a way. The billion dollar disasters report that the Trump admin tried to squash is now out via Climate Central. www.cnn.com/2026/01/08/c...

Trump moves to pull the US from bedrock climate treaty, UN IPCC and other int'l orgs & UN agencies. In doing so, the US becomes the only country to withdraw from this particular climate agreement dating back to 1992 (UNFCCC). www.cnn.com/2026/01/07/c...

The timing matters a lot on this effort to break up the National Center for Atmospheric Research. New reporting -- www.cnn.com/2025/12/17/c...

Perspective on the news about the Trump administration seeking to break up the NSF NCAR - The National Center for Atmospheric Research from the ground at the AGU meeting. www.cnn.com/2025/12/17/c...

The National Weather Service is hiring again, but very slowly, causing many forecast offices to continue to cope with staff shortages. www.cnn.com/2025/12/09/w...

Here are the press release on the retraction of one our Nature papers www.pik-potsdam.de/en/news/late... some explanations www.pik-potsdam.de/en/news/late... the journal's comment www.nature.com/articles/s41... Please note: The fact that climate change causes huge economic damages is not disputed..

Thanks in part to a polar vortex disruption, December is likely to feature waves of unusually cold weather across the Central and Eastern US + other parts of the midlatitudes, experts say. Details on the next Arctic blast: www.cnn.com/2025/12/03/w...

A deep dive into the superior performance of the Google DeepMind ensemble model this past Atlantic hurricane season, and what it portends for hurricane forecasting. www.cnn.com/2025/12/03/c...

"Climate risk data didn’t suddenly become inconvenient; it became harder to ignore in a stressed market.” On Zillow's decision to remove extreme weather risk info from home listings, and pressure on other sites to do the same, via @ellanilsen.bsky.social www.cnn.com/2025/12/02/c...

It’s always great to chat about the stratosphere. The last major sudden stratospheric warming event to occur in November was in 1968! We might do it again this year. We’ve had a few minor events in since then (e.g., 1996, 2000, 2009, 2016) and they hint at an active wintery December!

An unusually early sudden stratospheric warming event is likely to send the polar vortex on the move. Questions exist re: how this will affect US weather, but odds for colder, snowier weather are ticking up esp. in Central/Eastern US www.cnn.com/2025/11/19/w...

This is fascinating -- Iceland formally labels the potential collapse of the AMOC a national security threat. www.reuters.com/sustainabili...

This is not weather or climate content, but ya gotta eat, right? My wife, Olga, helped spearhead this dive into Thanksgivings past in order to plan the best possible meal for the holiday this year. It's neat, full of little mysteries. www.washingtonpost.com/food/2025/11...

A sobering take on what a slew of new reports say about how the world will look under 2-3°C+ of warming. W/ @laurapaddison.bsky.social & insights from @drkatemarvel.bsky.social, @kimcobb.bsky.social, @weatherwest.bsky.social & others. www.cnn.com/2025/11/12/c... (For CNN subscribers.)

An important new story on the quiet gutting of one of NASA's most important laboratory campuses, during the federal shutdown. Via @ellanilsen.bsky.social & @jackiewattles.bsky.social www.cnn.com/2025/11/04/s...

Here's the least surprising but still important climate headline of the day. Finally, the UN makes it official about the 1.5-degree target: www.cnn.com/2025/11/04/c...

Despite not sending a high-level delegation to the COP30 Climate Summit in Brazil, the presence of the US will still be felt by negotiators there. The US will be the elephant in the room, and could seek to disrupt the talks from afar, depending on how they're trending... www.cnn.com/2025/11/04/c...

We have not done any polling on the NJ Gov, Virginia Gov or NYC mayoral races. Our poll out today is national.

Innovative and visually striking story from @washingtonpost.com on trends toward increasing heavy downpours around the world. Worth a read. www.washingtonpost.com/weather/inte...

Melissa was one of the strongest storms on record. NOAA’s Hurricane Hunters flew into it without pay. Crews are asked “To be fully mentally present, especially in this environment, and it’s hard to do that when you know you can’t potentially make ends meet.” www.cnn.com/2025/10/31/w...

The National Hurricane Center's forecasts for Hurricane Melissa have been unusually accurate so far, despite NOAA cuts in personnel and budget. Here are some stats: www.cnn.com/weather/live...

I spent much of Tuesday talking to some of the top hurricane experts in the country about how climate change helped turn Hurricane Melissa into such a beast of a storm. Here's what they told me: www.cnn.com/2025/10/29/c...