Tornado Alley Preparedness

The Tornado Warning System

The US tornado warning infrastructure is the most developed in the world. Understanding it helps you make appropriate decisions.

SPC (Storm Prediction Center) Day 1-3 Outlooks: Issued daily, these probability maps show the risk of severe weather (including tornadoes) across the US in the coming days. A 10% or higher tornado probability in your area means today is a day to be prepared with shelter plan ready.

Tornado Watch: Issued when conditions favor tornado development. Watches cover large areas (often multiple states) for periods of 4-8 hours. During a watch: know your shelter location, have shoes on and phone charged, monitor weather alerts.

Tornado Warning: Issued when a tornado is detected. Covers a specific county or counties for a specific time period. During a warning: take shelter immediately.

Emergency Alert System and Wireless Emergency Alerts: Your phone will receive a loud alert for tornado warnings in your area. This is the alert that should have you moving immediately.

Weather radio: NOAA Weather Radio (NWR) broadcasts continuous weather information including warnings. A battery or hand-crank weather radio receives these alerts without cell service.

Shelter Options

Underground Shelter (Best)

Basement: Below grade in a structurally sound home. Get to the basement immediately. In the basement: go to the innermost corner under the stairs, away from windows. Cover yourself with a mattress or heavy blanket to protect from debris.

Dedicated storm shelter: An underground shelter (either under the home, under the garage, or buried in the yard) built specifically for tornado protection. FEMA publishes free construction plans for homeowner-built safe rooms. Commercial underground shelters run $3,000-8,000 installed.

Above-Ground Safe Rooms (Good)

FEMA-compliant above-ground safe room: A reinforced room built to withstand the debris impacts of an EF5 tornado. Typically a steel-reinforced concrete room within the home or a standalone prefabricated steel unit. These are anchored to the foundation and designed to remain structurally intact when the surrounding structure fails.

Pre-built above-ground safe rooms run $3,000-7,000 installed. FEMA provides mitigation grant programs in some states that subsidize safe room installation.

Interior Room (No Basement or Safe Room)

Without a basement or safe room, the best available shelter:

• Lowest floor
• Interior room (no exterior walls, no windows)
• Bathroom, closet, or central hallway
• Lie flat; cover head with hands or mattress/heavy blanket
• Do not stay in a wide-span room (gymnasium, auditorium, warehouse) — these roofs fail in high winds

What Does Not Provide Shelter

• Highway overpass: Wind tunnel effect; flying debris risk; people have died here
• Manufactured home: Leave and go to a nearby permanent structure or community shelter
• Vehicle: Tornadoes move unpredictably; do not try to outrun close tornadoes; if shelter is nearby, take it; if not, exit the vehicle and lie flat in the lowest ground you can find

Pre-Season Preparation (Annual)

The tornado season in the central US is primarily spring (March-June) with a secondary peak in fall. Pre-season preparation:

Test the shelter: Physically walk to your shelter location and note any obstacles, items that need to be moved, or access issues.

Assemble a shelter kit:

• Helmet (bicycle or motorcycle) for head protection during debris impact — one per family member
• Shoes (you may evacuate through debris barefoot without this preparation)
• Battery bank and charged phone
• Flashlight (power often fails before or during tornadoes)
• First aid kit
• Pet carriers if pets will shelter with you

Store this kit in or directly adjacent to the shelter location. You may have less than 60 seconds from warning to shelter.

Know your neighbors' shelter capability: If you have a basement and your neighbors don't, offer shelter access. If you don't have a basement, know which nearby neighbors do.

Weather alert subscription: Ensure your phone is set to receive Wireless Emergency Alerts (WEA). Download a local weather app with push notifications (most NWS-affiliated apps). Register with your county's emergency alert system if available.

During a Tornado Warning: The 60-Second Protocol

1. Hear the warning (phone alert, outdoor siren, weather radio)
2. Look out briefly — is it an imminent visual threat or a warning for a tornado elsewhere in the county?
3. Move immediately to shelter — don't gather belongings; get shoes and go
4. Shelter position: lowest floor, interior room, cover head and neck
5. Wait until the warning expires AND weather has cleared — a second rotation may follow a tornado in the same storm system

After a Tornado

Immediate safety:

• Gas leaks: if you smell gas, leave and do not operate any electrical switches (don't turn lights on or off — the spark can ignite gas)
• Downed power lines: treat all fallen lines as energized; stay away
• Structural damage: assess before re-entering; a structurally compromised building can collapse without warning

Search and rescue: Stay out of damaged structures unless someone is trapped and needs assistance. Your safety is not served by entering a structure that may collapse.

Documentation: If your property was damaged, document everything with photos before any cleanup. This is essential for insurance claims.