Climate change didn’t “create” winter storms — but it can change the ingredients they draw from, especially how much moisture the atmosphere can carry and how intense precipitation can be when storms develop.
This weekend through Monday, January 26, 2026, a sprawling U.S. winter storm pushed snow, sleet, freezing rain, and dangerous cold across a huge portion of the country. NOAA described the system as unusually large and severe, warning that the combination of significant snow/ice and extreme cold could make power outages and hazardous travel conditions linger longer than a typical storm.
So it’s natural to ask the headline question:
Is this storm a consequence of global warming?
Here’s the strongest true answer:
- Climate change can shift storm ingredients—especially atmospheric moisture and the potential for heavier precipitation—which can raise the ceiling on heavy precipitation when storms develop.
- The damage becomes far worse when extreme weather collides with fragile systems—grid exposure, ice-loaded tree canopies, leaky housing, and stretched emergency capacity.
- What we can’t do without an attribution study: honestly claim climate change caused this specific storm, or quantify how much it changed the odds or intensity.
That’s not hedging. That’s accuracy.
What happened this weekend
The storm’s footprint was national-scale, and the disruption was not just “snow totals.”
Travel and supply chains took a hit
Air travel was heavily disrupted, with reporting indicating thousands of flight cancellations on Monday and a record-level number of cancellations on Sunday as the storm crossed major corridors and hubs.
Outages spread as ice and wind stressed the grid
Ice accumulation and wind are a high-risk pairing: they load trees and lines, trigger breaks, and slow restoration. Reporting also described hundreds of thousands without power in the hardest-hit areas as of early Monday.
The human cost was real
Major outlets reported storm-related deaths as the event unfolded, tied to crashes, hypothermia risk, and dangerous conditions—an uncomfortable reminder that winter storms become lethal when systems fail.
The climate question, made precise
When people ask “did global warming cause this,” they’re usually mixing three different questions:
Did climate change change the storm’s ingredients?
This is where confidence is higher. As the planet warms, the atmosphere can hold more moisture. That can raise the potential for heavy precipitation when storms form and intensify. In winter, that can translate into heavier snowfall if temperatures are cold enough, or more rain/ice risk when temperatures hover near freezing—often the most grid-damaging setup.
Did climate change make the impacts worse?
Often the bigger story is vulnerability: whether infrastructure and housing are built to hold the line under extremes. A storm can be “weather,” while the scale of damage reflects how exposed and brittle systems have become.
Did climate change make this storm more likely or more intense?
That’s an attribution question. Attribution studies compare the likelihood or severity of an event in today’s climate versus a modeled world without human-caused warming. Without that analysis, “caused by climate change” isn’t a scientific claim—it’s a narrative shortcut.
What’s changed
This storm highlighted a modern reality:
Systems amplify the storm
When a large winter storm collides with:
- tree canopy exposure to ice loading
- power lines and substations vulnerable to wind/ice
- homes that lose heat quickly
- tight travel networks and supply chains
…the result is not just a weather event—it’s a cascading disruption.
The “risk window” lasts longer than snowfall
Even after precipitation ends, extreme cold can extend danger: roads stay slick, repairs take longer, and indoor safety becomes a bigger concern—especially during outages.
Low-carbon home preparation that actually lowers risk
Preparedness can easily become a shopping spree. The lower-impact path is simpler:
Make your home harder to fail, with the smallest footprint possible.
Start with the home envelope
The cleanest energy is the energy you don’t have to use.
Air sealing
- Weatherstrip exterior doors and add/replace door sweeps
- Seal obvious drafts around window frames (caulk where appropriate)
- Seal gaps where pipes/cables enter the house (foam or sealant)
Why it matters: reducing drafts slows heat loss and lowers peak demand—especially important during extreme cold.
Insulation triage
If you can tackle only one area first, prioritize:
- attic access/hatch sealing and insulation
- basement rim joist sealing/insulation
- pipe insulation (also reduces burst risk)
Use passive heat like a system
- Daytime: open curtains on sun-facing windows to capture solar gain
- Night: close curtains/blinds to reduce radiant heat loss
- Use rugs/blankets where you live to reduce perceived cold and thermostat demand
- “Zone your living”: keep one core room warmer rather than trying to heat the entire house during extremes
Reduce peak demand without suffering
- Modest nighttime thermostat setbacks
- Layer clothing (base + insulation + wind barrier) before buying new devices
- If you must use a space heater, use one durable unit intentionally (core room, doors closed, safe clearance)
Outage readiness without waste
Choose reusable items you’ll use again.
Light and power
- Rechargeable lanterns/LED lights
- A reliable power bank you keep charged (also useful year-round)
Food and water
- “Store what you eat”: a small rotating pantry of shelf-stable foods you already use
- Fill reusable water containers early when storms are forecast
Safety first
- Check smoke and CO detectors (carbon monoxide risk increases during outages)
- Never run grills, ovens, or generators indoors or near open windows/doors
The most sustainable prep is avoiding a second emergency.
FAQs
Did climate change cause this storm?
We can’t say that without an attribution study. The accurate framing is that climate change can influence background conditions that affect storms, while this specific event needs formal analysis to quantify any contribution.
Can a warming climate still produce severe snowstorms?
Yes. Snowstorms need moisture plus temperatures cold enough for snow. Warming doesn’t eliminate winter variability, but it can shift precipitation patterns and temperatures that determine whether a storm falls as snow, sleet, freezing rain, or rain.
Why can ice storms be more damaging than heavy snow?
Freezing rain coats surfaces and infrastructure, weighing down trees and power lines and creating widespread travel hazards—even when snow totals aren’t extreme.
What’s the biggest low-carbon preparation step?
Air sealing and insulation. They reduce heat loss every day, lower peak demand during extreme cold, and make outages less dangerous.
Final Thoughts
The best version of this headline isn’t “global warming caused it.” A more truthful version is:
A warming world reshapes risk—while fragile systems determine the damage.
Low-carbon preparedness isn’t about buying your way out of winter. It’s about building resilience with the smallest footprint: sealing leaks, slowing heat loss, reducing peak demand, and staying safe when the grid or roads can’t keep up.
