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South Dakota · Preparedness Guide

Ready for what South Dakota actually throws at you.

October blizzards that kill tens of thousands of cattle overnight, spring tornadoes across the eastern plains, Missouri River flooding, and brutal Arctic cold across the open prairie.

About this guide

Built for South Dakota. Not everywhere.

South Dakota's hazards span two completely different geographies. The eastern plains — flat, agricultural, tornado-prone — share more with Iowa and Minnesota than with the Black Hills in the west. The October 2013 Atlas blizzard killed 75,000 cattle in western South Dakota in a single storm — early October, when livestock were still on summer pasture with no shelter. The Missouri River floods catastrophically in wet years: the 2011 Missouri River flood caused $1.6B in damage and inundated communities for months. Tornadoes hit the eastern half of the state regularly from May through August. And South Dakota's winters are brutal — the Hi-Line and west river country see -40°F or colder multiple times per winter. After years as a Medicaid non-expansion state, South Dakota voters passed expansion by ballot in 2022 and coverage began July 1, 2023.

Local self-reliance starts with knowing your place.

Quick facts

Top hazards: Blizzards & Winter Storms, Tornadoes, Flooding

SD has expanded Medicaid — adults up to 138% FPL may qualify

USDA hardiness zones: 3b (northwestern SD / Black Hills / Mobridge) to 5a (southeastern SD / Sioux Falls)

Unemployment: up to $553/week for 26 weeks

Free or low-cost soil testing available through the state extension service

Seven topics, one state

What this guide covers.

Each section focuses on one question. Find what you need without wading through what you don't.

Get specific

Make it personal to your county.

Enter your ZIP code to see real-time weather alerts, drought conditions, FEMA disaster declarations, and county-level resources.

Next steps

Where do you want to go next?

Know your risks

See what's actually likely where you live.

Flood zones, hazard maps, and the SD risks that apply to your county.

Local Risk Readiness

Build the basics

Start with three days of self-reliance.

The universal first step — before you personalize, get the 72-hour foundation in place.

First 72 Hours