Where you live dictates how often you lose power and to what type of storm. The Southeast faces hurricane seasons and ice storms. Texas has a partially isolated grid and extreme weather on both ends of the temperature spectrum. California deals with wildfire-driven proactive shutoffs. And in the PNW, bomb cyclones and ice events can strain infrastructure.
At PowerOutage.us, we’ve monitored outages continuously since 2016. When Winter Storm Iona swept from Texas to Maine in March 2026, it brought along blackouts from ice in Michigan to winds across the mid-Atlantic. We see that large-scale storms can affect multiple regions and cause blackouts differently. While we don’t have a crystal ball, let’s look at how different storms affect outage durations.
How long do power outages last in the Southeast?
The Southeast is the most outage-affected region in the country by weather event count. Hurricanes make landfall here more than anywhere else in the continental U.S., and when they don’t, Gulf Coast moisture fueling winter storms creates some of the most damaging ice storms in the nation. The combination of aging distribution infrastructure, dense tree canopy, and high storm frequency means power outages last longer here than in many other areas of the country.
Hurricane Helene
https://twitter.com/PowerOutage_us/status/1846647419377013080
Hurricane Helene (September 2024) became the largest event PowerOutage.us tracked in 2024. It affected 4.79 million customers as blackouts peaked across Florida, Georgia, South Carolina, and North Carolina. South Carolina’s 1.09 million customers faced a 53-hour average statewide outage, the worst in the nation that year, according to EIA data. North Carolina’s western mountain counties had to fully rebuild infrastructure, and some customers waited over 14 days for power to come back.
Hurricane Milton
Hurricane Milton (October 2024) followed 2 weeks later, affecting 3.4 million Florida customers. The back-to-back events in the same season illustrated how Southeast infrastructure doesn’t fully recover before the next storm arrives. PowerOutage.us reached 1.8 million site requests per hour during Milton’s landfall.
Winter Storm Fern
Winter Storm Fern (January 2026) showed the Southeast’s ice storm vulnerability. Tennessee had 306,700 customer outages, mostly in the Nashville metro. Mississippi saw 175,300 customers without electricity. Before the storm, NOAA forecasters even said the potential damage “could rival that of a hurricane.” Hardest-hit customers spent over 6 days without power as ice accumulation collapsed tree after tree onto distribution lines.
How to prepare for an outage in the Southeast
If you live in the Southeast, keep the following in mind when preparing for outages.
- Secure generator and fuel storage or backup battery power before the hurricane season, from June through November
- Plan for extended outages that could last for a week or even two in coastal and rural areas after a major storm
- In Tennessee, Mississippi, Alabama, and the Carolinas, prepare for ice storms in addition to hurricane outages
- Trim trees around power lines to limit the likelihood of ice-covered branches breaking lines on your property
For detailed storm preparation, see our power outage emergency kit guide.
Texas: an isolated grid with extreme weather
Texas operates its own power grid, ERCOT, which covers about 90% of the state’s electricity. The isolation that makes ERCOT independent also means it can’t import large amounts of power from neighboring grids during emergencies. When Winter Storm Uri hit in February 2021, that limitation led to dire consequences.
Winter Storm Uri
Uri caused temperatures to drop as low as -19°C (-2.2°F) in the Texas High Plains. Natural gas wells and pipelines froze, cutting fuel supply to power plants at the exact time demand surged, and people needed heating systems to work. ERCOT came within minutes of a complete grid collapse. At the blackout’s peak, 4.4 million Texas customers were without power. At least 246 deaths were attributed to the event.
Houston Derecho
Seven weeks later, the Houston Derecho (May 2024) struck the same region. Winds up to 100 mph topped transmission towers, blew out downtown high-rise windows, and knocked out power to roughly 1 million customers. Harris County officials warned restoration could take weeks. Fifty thousand customers were still without power 6 days after the storm. Hurricane Beryl followed 7 weeks after that, affecting 2.6 million Texas customers during 95+ degree heat.
How to prepare for power outages in Texas
If you’re in Texas, keep these in mind as you prepare your outage kit:
- Be ready for both hot and cold blackout scenarios. Summer outages during 95+ degree heat waves create life-threatening conditions, especially for elderly residents and those without air conditioning.
- Consider Standby generators or large battery systems if possible for extended duration outages (Uri showed 4 to 5 days without power is possible in a grid failure)
- Thinking about water storage, Uri caused statewide pipe bursts and boil-water notices. Potable water planning is important even if you have power backup.
- Stay informed with ERCOT’s grid status page and PowerOutage.us, which provide real-time data on grid stress and customer outage counts
California: wildfires, PSPS events, and earthquake risk
California’s outage risk comes from two distinct sources that require different preparation. Wildfires and Public Safety Power Shutoffs (PSPS) are the dominant summer and fall risk. There is also a risk of an earthquake, which could create blackouts that don’t follow weather patterns.
Los Angeles Wildfires
During the Los Angeles Wildfires of January 2025, PowerOutage.us tracked 1.5 million California customers without power, with 936,000+ in Los Angeles County alone. The Palisades Fire burned 23,700+ acres, and the Eaton Fire burned 14,117 acres. Utilities proactively de-energized an additional 166,737 customers through public safety power shutoffs (PSPS) before the fires even threatened their lines. An estimated 70,000 people were evacuated, and 12,000+ structures were destroyed.
PSPS events are fundamentally different from storm outages. The utility cuts power intentionally, in advance, to prevent fires. They can last 2 to 5 days and affect you if you weren’t actually near any fire. Signing up for your utility’s PSPS notification system is the most important way to prepare in fire-risk zones of California.
How to prepare for power outages in California
Think about this when preparing for long outages in California:
- Enroll for PSPS alerts with your utility. SCE, PG&E, and SDG&E all have customer notification systems
- Consider battery backup systems for PSPS events, since outages are often planned with advance notice (giving you charging time)
- Create an evacuation go-bag with portable power stations for phone charging and medical devices during evacuation scenarios
How long do outages last in the Pacific Northwest?
Washington and Oregon have historically seen mild winters compared to the Northeast, which means their distribution infrastructure has less redundancy and hardening against ice and snowstorms. Major winter storms have a bigger impact when they do arrive in the region.
November 2024 bomb cyclone
The November 2024 Pacific Northwest bomb cyclone knocked out power to 600,000+ customers across Washington, Oregon, California, and Nevada. (This is technically the Northeast Pacific bomb cyclone since it was an ocean storm in the northeast corner of the Pacific.)
Blizzard warnings covered central and northern Oregon and Washington. High winds downed trees across distribution lines throughout the region. There were over 35,000 outages in California and 12,500 in Nevada. PowerOutage.us data, cited by Newsweek and PBS News, showed the event’s geographic spread in real time.
How to prepare for power outages in the Pacific Northwest
If you’re in the Pacific Northwest, consider the following:
- Be prepared for ice buildup and wind storms that overwhelm distribution infrastructure not designed for severe winters
- Plan for outages lasting 3 to 7 days to be realistic for major events in this region
- Consider safe backup heating options since homes with electric heat lose their primary heat source during outages
- Size generators or battery backups to help with refrigeration and some heating
Northeast: nor’easters, ice storms, and dense infrastructure
The Northeast has dense, older infrastructure that takes significant stress during winter events. While it has more resources for cold weather than the Northwest, it faces stronger storms.
Winter Storm Elliott
Winter Storm Elliott (December 2022) showed Northeast-wide vulnerability. Overall, 6.3 million total U.S. households lost power at some point during the storm. In Maine, 250,000+ customers lost electricity. North Carolina, Virginia, Tennessee, and New York each hit 100,000+ customers. It was a 36-state event that demonstrated how bomb cyclones can travel the entire eastern seaboard.
How to prepare for power outages in the Northeast
If you’re in the Northeast:
- Ice storm preparedness takes priority over snow events through tree trimming, emergency heat backup, and extended duration planning
- Maine, Vermont, New Hampshire, and West Virginia customers should plan for 5 to 10-day worst-case outage scenarios
- Find backup heating that doesn’t depend on electricity, like wood stoves, pellet stoves, or propane heaters rated for indoor use
- Work to prevent pipes from freezing during extended outages in cold climates
Midwest: derechos, tornadoes, and summer storm exposure
The Midwest faces a different risk profile from most other regions. Summer thunderstorms, squall lines, and derechos produce the majority of significant outages, rather than winter events. The flat terrain that makes Midwest agriculture productive also provides no natural windbreak for severe storm systems.
August 2020 Midwest Derecho
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The August 2020 Midwest Derecho traveled 770 miles from South Dakota to Ohio in 14 hours. PowerOutage.us tracked 440,000+ customers out simultaneously at its peak, with 1.2 million affected across Illinois, Iowa, and Indiana. Iowa’s MidAmerican Energy had 204,000+ customers out. The storm’s speed and intensity gave little warning.
Midwest tornados
Tornadoes are among the most destructive outage causes in the Midwest, capable of snapping transmission towers, shredding distribution lines, and destroying substations in minutes.
Unlike derechos, which affect wide corridors, tornadoes can devastate a single utility district while leaving neighboring counties untouched. The 2011 Joplin, Missouri, tornado and the 2013 Moore, Oklahoma EF5 tornado left tens of thousands without power for days, with some infrastructure requiring full rebuilds.
How to prepare for power outages in the Midwest
Midwest preparedness priorities:
- Get a generator prepared in the summer because the derecho season peaks from May through August
- Consider a battery backup to run necessary appliances
- Sign up for weather alerts because derechos can move 60+ mph and provide less warning time than hurricanes
- Know how to provide backup sump pump power for basement flooding during storm events
How long power outages last by region
Here’s a quick overview of outage durations by region:
| Region | Primary outage cause | Typical worst-case duration | Top preparedness priority |
|---|---|---|---|
| Southeast | Hurricanes, ice storms | 14+ days (rural, post-Cat 3+) | Extended duration planning, generator fuel storage |
| Texas | Grid strain and failure, heat, winter storms | 4 to 5 days (grid failure event) | Water storage + backup power + heat prep |
| California | Wildfires, PSPS shutoffs | 2 to 5 days (PSPS) | PSPS alert enrollment, battery backup |
| Pacific Northwest | Bomb cyclones, ice storms | 3 to 7 days | Winter backup heating, generator |
| Northeast | Ice storms, nor'easters | 5 to 10 days (rural areas) | Backup heating, pipe freeze prevention |
| Midwest | Tornadoes, winter storms, derechos | 1 to 5 days | Summer storm generator readiness |
For real-time outage data in your area, check PowerOutage.us, which refreshes every 10 minutes across 950+ utilities.
Urban vs. rural time to get power back online
The gap in restoration time between rural and urban areas is evident across different regions of the country. Urban customers often get power back within 24 to 48 hours after any storm. Rural customers in the same state can wait 5 to 14 times longer.
This gap is driven by something called line miles per customer: rural feeders serve fewer homes per mile, making each repair less cost-effective for utilities to prioritize. If you’re in a rural area, add at least 72 hours to any urban-based restoration estimate when planning your backup power needs.
Prepare for power outages lasting multiple days at least
Since it’s impossible to predict the future, it’s a good idea to have a power outage emergency kit for 72 hours at least, to build a kit for a week or two.
A basic kit should have water, nonperishable food, flashlights, headlamps, a battery or hand-crank radio, a first aid kit, and sanitation supplies. For backup power, choose whether you can get by with a compact battery power bank or need a whole-home battery backup or generator.
If you have powered medical equipment, make a medical device outage checklist to follow to secure backup power or go to a second location during an outage.
Quick recap
Outages can last anywhere from a few hours to a few weeks, but different parts of the country have different likelihoods of various storms and blackout events. From Hurricane Helene's 53-hour South Carolina average to Winter Storm Uri's 4-day Texas blackout, duration varies widely, so being prepared is important. Know your region's risk and use PowerOutage.us to monitor blackouts when they happen.