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Sioux Falls, S.D. – Dec. 17, 2025 – The U.S. Weather Service in Aberdeen forecasts snow and strong winds moving into Eastern South Dakota. NorthWestern Energy reminds customers to stay safe and prepared before, during, and after the storm.

NorthWestern Energy is prepared with staffing and equipment to respond as quickly and safely as possible to any outages caused by the storm.

Before the Storm: Prepare Now

• Charge devices: Make sure cell phones and other essential electronics are fully charged.
• Gather supplies: Stock up on water, non-perishable food, flashlights, batteries, and necessary medications.
• Check emergency kits: Include blankets, first-aid supplies, and items for pets.

More tips: https://www.northwesternenergy.com/safety/outage-safety/before-the-storm

During the Storm: Stay Safe

• Stay indoors: Avoid going outside during high winds and icy conditions.
• Report outages: Use NorthWestern Energy’s outage reporting tools online or by phone.
• Avoid downed lines: Treat all downed power lines as live and dangerous. Stay far away and report immediately.

More tips: https://www.northwesternenergy.com/safety/outage-safety/during-the-storm

After the Storm: Exercise Caution

Inspect surroundings: Watch for downed lines, damaged poles, and debris before venturing outside.

More tips: https://www.northwesternenergy.com/safety/outage-safety/after-the-storm

Stay connected:

For outage updates and safety information, visit https://www.northwesternenergy.com.

For the latest weather alerts and forecasts, visit the U.S. Weather Service Aberdeen at https://www.weather.gov/abr

Follow us on Facebook and LinkedIn and Instagram: @NorthWesternEnergy

NorthWestern Energy - Delivering a Bright Future

NorthWestern Energy, provides essential energy infrastructure and valuable services that enrich lives and empower communities while serving as long-term partners to our customers and communities. We work to deliver safe, reliable, and innovative energy solutions that create value for customers, communities, employees, and investors. We do this by providing low-cost and reliable service performed by highly-adaptable and skilled employees. We provide electricity and / or natural gas to approximately 842,100 customers in Montana, South Dakota, Nebraska, and Yellowstone National Park. Our operations in Montana and Yellowstone National Park are conducted through our subsidiary, NW Corp, and our operations in South Dakota and Nebraska are conducted through our subsidiary, NWE Public Service. We have provided service in South Dakota and Nebraska since 1923 and in Montana since 2002.

Media Contacts:

Jo Dee Black

866-622-8081

jodee.black@northwestern.com