Hurricanes risk in South Dakota

Hurricane Risk in South Dakota: What You Need to Know

South Dakota is rated as Level 1 (Very Low) for hurricane risk on the National Risk Index. The state sits far from any ocean coastline, so direct hurricane landfall is virtually impossible. Yet that doesn’t mean the state is completely untouched by tropical systems. Occasionally, the remnants of a Pacific hurricane or the moisture from an Atlantic storm can drift into the Northern Plains, bringing periods of heavy rain and potential flooding.

The geography of South Dakota matters. The eastern half of the state, especially the region along the Missouri River and the James River basin, has flatter terrain and tends to be more susceptible to river flooding when heavy rain falls. The western half, including the Black Hills, can experience flash flooding in steep terrains. However, these events are rare and typically occur between June and October, when tropical activity peaks in the Pacific and Atlantic basins.

While hurricane-force winds are not a realistic concern for South Dakota homeowners, the indirect effects of tropical systems deserve attention. The National Weather Service routinely tracks these remnants, and the NOAA National Hurricane Center monitors storms as they move inland. Even a weakened tropical depression can produce significant rainfall, especially when it interacts with local weather fronts or slow-moving systems.

How It Affects Homes

For South Dakota homes, the main threat from a hurricane remnant is flooding from heavy rainfall, not wind damage. Even modest accumulations – a few inches of rain over a short period – can overwhelm drainage systems, cause water to seep into basements, and wash out low-lying roads. Property damage often includes soaked carpets, ruined drywall, damaged personal belongings, and mold growth.

Insurance is a critical consideration. Standard homeowners insurance policies typically do not cover flood damage. To be protected, you would need a separate flood insurance policy, usually purchased through the National Flood Insurance Program (NFIP) or a private insurer. Because hurricane risk is so low in South Dakota, flood insurance is not federally required, but it is strongly advised for homeowners in designated floodplains or those with basements or low-lying properties.

In addition to floodwaters, severe thunderstorms that sometimes accompany tropical remnants can produce strong wind gusts and hail. While these are not hurricane-force, they can still damage roofs, siding, and windows. Review your homeowner’s policy to ensure it covers wind and hail damage, which is typically included but may have separate deductibles for hail in some states.

How to Prepare Your Home

Even with a low hurricane risk, taking sensible precautions can help minimize damage from flooding and severe weather. Here are concrete steps you can take:

• Keep gutters and downspouts clean so rainwater flows away from your foundation.
• Inspect your property’s grading to ensure the ground slopes away from your home, preventing water from pooling near the foundation.
• If you have a basement, install a sump pump and test it regularly. Consider a battery backup in case of power outages.
• Elevate critical utilities like electrical panels, water heaters, and appliances about 12 inches above your home’s base flood elevation, if applicable.
• Waterproof basement walls and floors with sealants to reduce moisture intrusion.
• Secure large outdoor items such as grills, sheds, and patio furniture, which can become projectiles in high winds.
• Create a family emergency kit with water, non-perishable food, medications, flashlights, and important documents.
• Develop a communication plan so family members know where to meet and how to stay in touch during an emergency.
• Sign up for local weather alerts from the South Dakota Office of Emergency Management and the National Weather Service.
• Check FEMA’s flood map at https://msc.fema.gov to see if you live in a flood-risk zone.

Frequently Asked Questions

Does South Dakota ever get hurricanes?

No. South Dakota is too far from the ocean for a hurricane to make landfall. However, the remnants of tropical storms can bring heavy rain and flooding, so it’s wise to stay aware during hurricane season.

Should I buy flood insurance in South Dakota?

Flood insurance is not federally required for most South Dakota homeowners, but it is affordable and worth considering, especially if you live in a floodplain or have a basement. Check FEMA flood maps and talk to your insurance agent about your specific risk.

What should I do if a tropical storm remnant is forecast for my area?

Monitor weather updates from the National Weather Service and your local emergency management agency. Heed flood warnings, avoid driving through flooded roadways, and be ready to move to higher ground if flash flooding occurs. Keep your emergency kit and plan ready.

Official Resources

• South Dakota Office of Emergency Management
• NOAA National Hurricane Center
• Ready.gov – Hurricanes
• FEMA Hurricane Preparedness