Why this winter storm will likely be a wild one | The VergeSkip to main contentThe homepageThe VergeThe Verge logo.The VergeThe Verge logo.TechReviewsScienceEntertainmentAIPolicyHamburger Navigation ButtonThe homepageThe VergeThe Verge logo.Hamburger Navigation ButtonNavigation DrawerThe VergeThe Verge logo.Login / Sign UpcloseCloseSearchTechExpandAmazonAppleFacebookGoogleMicrosoftSamsungBusinessSee all techGadgetsExpandLaptopsPhonesTVsHeadphonesSpeakersWearablesSee all gadgetsReviewsExpandSmart Home ReviewsPhone ReviewsTablet ReviewsHeadphone ReviewsSee all reviewsAIExpandOpenAIAnthropicSee all AIVerge ShoppingExpandBuying GuidesDealsGift GuidesSee all shoppingPolicyExpandAntitrustPoliticsLawSecuritySee all policyScienceExpandSpaceEnergyEnvironmentHealthSee all scienceEntertainmentExpandTV ShowsMoviesAudioSee all entertainmentGamingExpandXboxPlayStationNintendoSee all gamingStreamingExpandDisneyHBONetflixYouTubeCreatorsSee all streamingTransportationExpandElectric CarsAutonomous CarsRide-sharingScootersSee all transportationFeaturesVerge VideoExpandTikTokYouTubeInstagramPodcastsExpandDecoderThe VergecastVersion HistoryNewslettersExpandThe Verge DailyInstallerVerge DealsNotepadOptimizerRegulatorThe StepbackArchivesStoreSubscribeFacebookThreadsInstagramYoutubeRSSThe VergeThe Verge logo.Why this winter storm will likely be a wild oneComments DrawerCommentsLoading commentsGetting the conversation ready...ScienceCloseSciencePosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ScienceNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsClimateCloseClimatePosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ClimateWhy this winter storm will likely be a wild oneThe science behind the storm is an active area of study.The science behind the storm is an active area of study.by Justine CalmaCloseJustine CalmaSenior Science ReporterPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Justine CalmaJan 23, 2026, 4:00 PM UTCLinkShareGiftPhoto: Jackie Bale / Getty ImagesJustine CalmaCloseJustine CalmaPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Justine Calma is a senior science reporter covering energy and the environment with more than a decade of experience. She is also the host of Hell or High Water: When Disaster Hits Home, a podcast from Vox Media and Audible Originals.Most of the US is bracing for a prolonged stretch of frigid weather and a massive winter storm that could wreak havoc on roads and power grids over the next several days.At least 170 million Americans are under winter weather alerts. “Bitterly cold temperatures and dangerously cold wind chills” will linger even after the storm is done dumping heavy snow, sleet, and freezing rain across the Southern Rockies all the way to New England through Monday, the National Weather Service (NWS) warned Friday. Forecasters expect low temperatures to break numerous records, with wind chills as frigid as minus 50 degrees Fahrenheit in the Northern Plains.It’s been a bit difficult for forecasters to get a good sense early on of where this storm will be headed and who will be hardest hit. It’s driven by complex factors scientists are still working to better understand, starting with bitter-cold Arctic air set on a collision course with a weather system moving inland from the Pacific Ocean that’s loaded with moisture.“It’s not setting up like a normal winter storm.”“It’s not setting up like a normal winter storm,” says Andrea Lopez Lang, an associate professor and atmospheric scientist at the University of Wisconsin–Madison. The effects could be particularly long-lasting. And with such a large swath of the US affected, there is likely to be a wide range of effects from place to place. “Make sure that you’re paying attention to your local forecasts, because the impacts can be very different, even though this is all part of the same system,” Lopez Lang advises.Parts of the Arctic are enveloped in darkness for months at a time in the winter, allowing the air to get consistently colder. Normally, a current of strong winds called the jet stream keeps that Arctic air from drastically affecting temperatures further south. But a large high-pressure system has allowed the jet stream to dip, letting extremely cold air reach further down into Canada and the US.When that moisture-packed weather system from the Pacific moves far enough inland to crash into the jet stream, the combination of wet and cold conditions can create a cascade of hazards from snow and freezing rain. The latter, which happens when raindrops freeze upon hitting a surface, allows ice to build up on roads and infrastructure. The persistent cold after the storm prolongs the risk.“The storm will cause significant to locally catastrophic ice accumulations with the potential for long-duration power outages, extensive tree damage, and extremely dangerous or impassable travel conditions,” NWS says in its forecast. Ice is heavy, which could bring down power lines and leave some homes without electricity or heat in an outage. The deadly cold spell in Texas in 2021 left millions of homes without heat after ice clogged up gas pipelines.It’s too early to say exactly what role climate change might play in this particular storm. There were unique triggers for this storm, however, that might have been influenced by a shifting climate. For one, the atmosphere can hold more water vapor, which can lead to heavier downpours with storm systems.The jet stream has also gotten wackier. The difference in temperature between the tropics and the poles historically has kept it relatively consistent. But the Arctic is warming even faster than the rest of the planet. And as the difference in temperature becomes less pronounced, the more the jet stream buckles — allowing Arctic air to penetrate further south when the jet stream meanders.Severe cold snaps like this one have actually become less common with rising global temperatures. That can pose its own challenges because communities might not be as prepared to cope with them when they do arrive, experts tell The Verge. And they stress that it’s important to understand that climate change can influence extreme events of all kinds, not only heat.“People say, ‘Oh, well, it’s really cold or we’re getting a lot of snow — how is the world warming?’ Climate change is an increase in the baseline temperatures, but it’s also an increase in extremes from both ways,” says Kaitlyn Trudeau, a senior research associate at the nonprofit Climate Central. “It can make more extreme cold outcomes; it can make more extreme warm outcomes … judging climate change by a cold storm is like judging a baseball season by a single inning.”Lopez Lang is bracing for the impact of the storm in Wisconsin, both on her home and her work. Weather permitting, she and her colleagues are planning to fly into the storm as it makes its way off the east coast to study how it evolves. They’ll be aboard a NASA aircraft taking measurements of water vapor, temperature, and other factors influencing this event. They want to study the structure of the storm to better understand what happens when a weather system like the one causing trouble this week meets the jet stream.After all, some of the initial questions over how the storm would unfold this week stem from forecasters trying to figure out when and how that merge would occur. “These mergers [are] big components of the uncertainty in forecasts,” Lopez Lang says. “So we want to make sure that we’re observing them really well so that we can get the best data to make the best forecasts.”Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Justine CalmaCloseJustine CalmaSenior Science ReporterPosts from this author will be added to your daily email digest and your homepage feed.FollowFollowSee All by Justine CalmaClimateCloseClimatePosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ClimateEnvironmentCloseEnvironmentPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All EnvironmentNewsCloseNewsPosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All NewsScienceCloseSciencePosts from this topic will be added to your daily email digest and your homepage feed.FollowFollowSee All ScienceMost PopularMost PopularClaude Code is suddenly everywhere inside MicrosoftSony announces its first turntables in yearsEpic and Google have a secret $800 million Unreal Engine and services dealThe state attorneys general are as mad as you areWhy nobody’s stopping GrokVideoThe Verge DailyA free daily digest of the news that matters most.Email (required)Sign UpBy submitting your email, you agree to our Terms and Privacy Notice. 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This winter storm presents a complex and unusually severe weather event, driven by a confluence of atmospheric factors rather than a typical winter storm formation. The National Weather Service (NWS) has issued alerts for an expansive area, from the Southern Rockies through New England, indicating the scale of the potential impact. Forecasters are grappling with the evolving dynamics of the storm, largely due to the unprecedented interaction between a moisture-laden Pacific weather system and a significantly altered jet stream. The jet stream, normally a primary driver of weather patterns, has been unusually influenced by a high-pressure system, allowing exceptionally cold Arctic air to penetrate much further south than historically observed. This unusual jet stream behavior is central to the storm’s intensity and duration.

The most immediate hazard is the combination of dangerously cold temperatures, with wind chills potentially dropping to -50 degrees Fahrenheit, and heavy snow, sleet, and freezing rain. The prolonged duration of these conditions, coupled with the extensive geographic area affected—approximately 170 million Americans— highlights the potential for widespread and significant disruption. The NWS forecasts that the storm will break numerous records and cause substantial ice accumulations, an element that poses a serious risk for power outages and infrastructure damage, recalling the 2021 Texas power crisis.

A key aspect of understanding this storm’s unusual nature is the role of climate change. While it’s difficult to definitively attribute this specific event solely to climate change, the fundamental dynamics are influenced by long-term shifts. The atmosphere’s increased capacity to hold water vapor, driven by warming temperatures, contributes to heavier precipitation events like those anticipated. Furthermore, the altered jet stream—a consequence of rapid Arctic warming, where the temperature difference between the poles and the tropics has diminished—is a key marker of a changing climate system. This weakening of the jet stream allows extreme cold air to penetrate further south, creating unpredictable and intense weather events.

Forecasters are actively engaged in monitoring the storm's development, particularly the point of merger between the Pacific weather system and the jet stream. The accuracy of the predictions depends on detailed observations and real-time data gathered by instruments like NASA’s research aircraft, which are being deployed to study the storm’s structure. These instruments measure crucial elements, including water vapor, temperature, and wind speed, allowing scientists to better understand the exchange of energy and moisture that fuels the storm’s intensity. The ability to accurately model this merger is vital for improving forecasts and mitigating the potential consequences of the impending weather event. The complexity stems from the fact that the characteristics of the merger are uncertain, making forecasting an active and evolving process.