Sioux Falls Disaster Risk Score & Hazard Analysis
With a population of 207,795 and a calculated risk score of 89.7, Sioux Falls faces unique challenges. This page is a complete hazard risk assessment for Sioux Falls, SD. The community in Sioux Falls is tight-knit and spirited. But being prepared means knowing what could go wrong. Historical data suggests a pattern of winter weather activity.
Total Risk Score
Our algorithm assigns Sioux Falls a Risk Score of 89.656 out of 100. This score is heavily influenced by the high probability of Winter Weather and Tornado.
Winter storm risk in Sioux Falls, South Dakota
Severe winter weather and ice storms pose a unique threat to Sioux Falls, potentially causing extended power outages and hazardous road conditions. Infrastructure in the area may be vulnerable to heavy ice accumulation.
Sioux Falls Winter Grid Failure Prep
- •Have a safe, indoor-rated backup heat source
- •Insulate pipes and know how to shut off main water valve
- •Keep a backup battery bank for charging phones
Top Hazards for The Sioux Falls Area
Historically, the climate of South Dakota dictates that historical precedents show that winter weather are an ever-present reality. As a result, the aggregate danger score for this specific hazard stands at 99.6. A NOAA weather radio with battery backup is the most reliable way to receive alerts.
From a statewide perspective in South Dakota, seasonality plays a huge role in the intensity of tornadoes here. Consequently, our algorithm flags this as a priority area with a calculated intensity of 98.7. Local schools and businesses typically have robust protocols for these weather events.
The geographical layout of South Dakota means that emergency services prioritize readiness for these river flooding scenarios. Therefore, deep learning models analyzing weather patterns output this risk metric of 93.4. Sandbagging locations and shelter routes should be identified before the season starts.
Winter Grid Failure Guide
Sioux Falls has significant winter storm risk. Learn the thermodynamics of survival when the power goes out.

The Apartment Fortress
Living in Sioux Falls? Learn how to handle water storage, sanitation, and security in a small space.
How to Prepare in Sioux Falls
Read the Full Guide →General preparedness is critical for Sioux Falls. While specific risks vary, the fundamentals of survival—water, food, and information—remain the same.
Critical Action Checklist
- 1Keep a physical map of the local area in case GPS fails.
- 2Maintain a 3-day supply of non-perishable food and water.
- 3Have a first aid kit and a supply of prescription medications.
- 4Keep a battery-powered radio to stay informed during power outages.
- 5Establish a family communication plan for when cell towers are down.
Essential Gear for Sioux Falls

Water
Sawyer Products Mini Water Filtration System
Filters up to 100,000 gallons. Essential when tap water is compromised.

Power
Petzl Actik Core Headlamp
600 lumens and rechargeable. Hands-free lighting is critical during power outages.

Home
Gorilla Tape (Black)
Heavy-duty tape for emergency repairs, sealing windows, or medical improvisation.
Your safety depends on your readiness. Start building your emergency kit for Winter Weather now.
View Complete Gear Checklist →Compare Nearby Cities
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Frequently Asked Questions
How common are Winter Weathers in Sioux Falls?
With a risk score of 99.6 for Winter Weather, Sioux Falls is considered highly vulnerable. Residents should have a specific plan for Winter Weather events, which are the primary driver of the city's overall risk profile.
Is Sioux Falls safer than other cities in South Dakota?
It varies by hazard. While Sioux Falls has its own risk profile (Total Score: 89.7), it is generally comparable to the average in South Dakota. See our state rankings for a direct comparison.
Should I move to Sioux Falls given the risk of Tornado?
Every city has risks. The threat of Tornado (Score: 98.7) is manageable with proper preparation. The local infrastructure in Sioux Falls is designed to handle this, but personal insurance and a 'go-bag' are recommended.
How does Sioux Falls compare to other cities in South Dakota?
See the full South Dakota Disaster Rankings to see how Sioux Falls stacks up against other cities in the state.