13 Minutes: What You Can and Cannot Do With a Tornado Warning
The average tornado warning gives you 13 minutes. Here is what you can realistically do with that time, and what you absolutely cannot.
Your phone screams. The siren starts. A tornado warning has been issued for your area. The clock starts now. You have 13 minutes. That is the average lead time the National Weather Service provides before a tornado reaches your location.
Thirteen minutes sounds like enough. It is not. Not for most of the things people assume they will do. Here is an honest breakdown of what 13 minutes actually means for your family's survival.
Where the 13-Minute Number Comes From
The National Weather Service tracks tornado warning lead times across every event. In recent years, the national average has hovered around 13 minutes. Some warnings give you 20 or even 30 minutes. Others give you less than 5. In the worst cases, a tornado drops from the sky with zero warning, no siren, no phone alert, nothing.
The 13-minute average is exactly that: an average. You cannot plan around getting the full 13 minutes. You need a safety plan that works even if you only get 5.
Warning Time Statistics
- Average tornado warning lead time: 13 minutes (NWS data)
- Median lead time: approximately 9 minutes (some warnings are very short)
- Percentage of tornadoes with 0 to 5 minutes warning: roughly 20%
- Percentage of nighttime tornadoes: about 27% (harder to see, harder to react)
- Nighttime tornado fatality rate: 2.5x higher than daytime events
At 2 AM on a Tuesday, when your family is asleep and the siren barely wakes you up, 13 minutes shrinks to 8. Then 5. Then you are out of time.
What You CANNOT Do in 13 Minutes
- Drive to a public shelter. The nearest public shelter could be 10 to 20 miles away. Traffic will be gridlocked. Roads may already be blocked by debris or downed power lines. Driving during a tornado is one of the deadliest decisions you can make. According to NOAA, 18% of tornado fatalities in 2025 occurred in vehicles.
- Build or improvise a safe space. You cannot reinforce a closet, board up windows, or drag a mattress into the bathtub in a way that protects against 200 mph winds. Interior rooms fail in EF3+ events. The 2011 Joplin tornado destroyed interior rooms in permanent homes across a mile-wide path.
- Evacuate your neighborhood. Evacuation works for hurricanes with days of notice. Tornadoes give you minutes. Leaving your home puts you in a vehicle, which is one of the worst places to be during a tornado.
- Round up your entire family from different locations. If your kids are at a friend's house two miles away, you are not getting there and back in 13 minutes. This is why every member of your household needs to know the plan independently.
- Wait to see if it is "really coming." By the time you see the funnel, your window has closed. Tornado warnings are issued based on radar rotation, not visual confirmation. Waiting for visual confirmation costs you the minutes you need to survive.
- Search for your emergency supplies. If your flashlight, weather radio, and first aid kit are scattered around the house, you will spend 5 minutes looking for things instead of getting underground. Your shelter should be pre-stocked and ready at all times.
What You CAN Do in 13 Minutes
- Walk to your backyard storm shelter. 30 seconds. Open the hatch, walk down the steps, close it behind you. Done.
- Grab your kids and pets. If everyone is home, you can gather your family and get underground in under 2 minutes.
- Send one text. Tell a family member where you are. Then put the phone away and focus on getting safe.
- Turn on your weather radio. A battery-powered NOAA radio tells you when the all-clear is issued. Most storm events last 15 to 30 minutes.
- Secure the hatch. Lock the 3-point locking system on your steel door and sit tight. The 12,000 lbs of concrete and surrounding earth do the rest.
A Minute-by-Minute Timeline With a Shelter
Here is what the 13-minute window looks like when you have a Home Defend Pro shelter installed 50 feet from your back door:
- Minute 0: Phone alert sounds. Siren goes off. You recognize it immediately because your family has discussed the plan.
- Minute 1: You call out to the family. Everyone moves toward the back door. You grab phones and shoes if they are within arm's reach. Nothing else matters.
- Minute 2: You open the shelter hatch. Kids go down the steps first. You hand the dog down. You step in last.
- Minute 3: Hatch is closed and locked. Three-point locking system engaged. You turn on the battery-powered light and weather radio that are already inside.
- Minutes 3 to 13: You sit underground in a FEMA P-320 certified, EF5-rated, 5,000 PSI reinforced concrete shelter. The tornado passes. You do not hear much. You feel nothing. You are safe.
- Minutes 13 to 30: You listen to the weather radio. When the all-clear is issued, you open the hatch and assess. Your family is alive.
That is the plan. It takes 3 minutes to execute. It leaves you 10 minutes of margin. It works at 2 PM and it works at 2 AM.
The Families Who Do Not Have a Plan
Without a shelter, here is what that same 13-minute window looks like:
- Minute 0: Alert sounds. Panic sets in. Where do we go? Do we have a basement? No.
- Minutes 1 to 3: Arguments. Do we drive to the church? The school? Do we stay here? Someone says "let's wait and see."
- Minutes 3 to 7: Decision is made. Pile into the car. Traffic is already backed up. Other families had the same idea.
- Minutes 7 to 10: Stuck on the road. Rain intensifies. Hail starts. Visibility drops to zero.
- Minutes 10 to 13: The tornado is visible. You are in a car. A vehicle is statistically one of the most dangerous places to be during a tornado.
This is not hypothetical. NOAA reviews of tornado fatality cases show this pattern repeatedly. Indecision and delayed action are common factors.
Nighttime Tornadoes Are the Deadliest
About 27% of tornadoes occur between 10 PM and 6 AM. These nighttime tornadoes have a fatality rate 2.5 times higher than daytime events. The reasons are straightforward:
- People are asleep and may not hear sirens
- Phone alerts may be silenced
- Visibility is zero, so you cannot see the tornado approaching
- Reaction time is slower when you are woken from sleep
- Children are harder to wake and move quickly
A backyard shelter does not care what time it is. It is always there, always ready, always the same 30-second walk from your door. If you have kids in the house, a shelter is not a luxury. It is a responsibility.
The Difference Is Having a Plan That Works
The families who survive tornadoes are not luckier. They are more prepared. They have a shelter within steps of their home. They have practiced the drill. Their kids know what the siren means. The dog knows the route. There is no confusion, no debate, no wasted minutes.
A Home Defend Pro underground shelter sits in your backyard, ready every time. FEMA P-320 certified, EF5 rated, 5,000 PSI reinforced concrete, 12,000 lbs, 4-inch walls, 12-gauge steel door with 3-point locking. It costs $4,250 plus shipping at $5.20 per mile from Grandview, Missouri. A $500 deposit locks in your unit and we ship in approximately one week. Most customers have it installed in 10 days.
Thirteen minutes is all you get. Some nights you get less. Make sure you have somewhere to go.