How to Run a Tornado Drill at Work: Step-by-Step Procedures

Extreme weather can put employees, facilities, and business operations at risk with little warning. On AlertMedia’s Employee Safety Podcast, climate risk expert Jay Dunne highlighted the mounting financial impact of severe weather, referencing NOAA’s historical disaster data:

“There’s a major data set that takes a look at natural disasters, including extreme weather events, occurring since 1980. We’re seeing $3 trillion in damage from these extreme weather events. The truly eye-opening part is that half of that—$1.5 trillion of damage—has occurred from events just in the last five years.”

For businesses, tornado preparedness starts with ensuring employees know how to respond. A workplace tornado drill gives you an opportunity to practice emergency procedures, test communication systems, and identify potential safety gaps before a real warning puts your team at risk.

Why Tornado Drills Matter for Workplace Safety

When a tornado warning arrives, employees need to know where to go and whom to follow. A tornado drill turns the written plan into a practiced response, giving people experience moving to shelter and following emergency instructions before conditions become dangerous.

The exercise also reveals problems that may be difficult to spot on paper. An alert may miss warehouse workers, a shelter route may become congested, or employees may feel unsure about who is responsible for visitors under the general inclement weather policy. Finding those gaps during a drill gives your team time to correct them.

This is especially important for organizations with multiple locations. A small office, a warehouse, a multistory building, and a facility with many contractors and visitors each require a different approach. Each location needs to test its own routes, communications, and shelter capacity.

Build a Tornado Safety Plan You Can Test

A useful drill begins with a plan tailored to the actual workplace. Employees need to know where the safest shelter areas are and how to reach them, while designated coordinators need clear authority to initiate the response and guide others.

Jay Dunne points to a vulnerability that written plans can overlook: “All of our business continuity plans are based on the assumption that the systems at our foundation… are intact and they’re not being disrupted by the phenomenon.” The same tornado that triggers your emergency plan could knock out power, cellular networks, internet access, or even backup systems you expect to rely on. A drill tests those preparedness assumptions before an emergency strains communications, infrastructure, and outside support.

Decide in advance how your team will monitor tornado threats, send the shelter-in-place instruction, and account for everyone inside the facility. With those fundamentals established, the drill becomes a realistic test of how the plan performs.

Prepare Your Workplace for a Tornado Drill

Before running the drill, make sure employees have a safe place to go and know who will coordinate the response. These preparations give your team clear procedures to practice—and give you something concrete to evaluate afterward.

Identify safe shelter locations

Your designated shelter location should provide the greatest available protection against high winds and flying debris.

According to OSHA, underground areas such as basements and storm cellars offer the best protection. If your facility lacks an underground space, select small interior rooms or hallways on the lowest possible floor, away from windows, exterior doors, and outside walls. Avoid large open areas with wide-span roofs, such as auditoriums and warehouse floors.

Different workplace environments require different shelter arrangements. In an open-plan office, designate interior conference rooms, restrooms, or hallways away from glass-enclosed workspaces. Warehouses may require employees to move away from the main storage floor into a more protected interior area. Multi-story offices should identify suitable lower-floor shelters and alternatives for employees who cannot reach them safely in time. If employees work from a mobile home or a temporary field site, the plan should identify a nearby sturdy building they can reach quickly.

Inspect each proposed shelter location for accessibility, capacity, and potential hazards. Consider how employees with mobility limitations will reach the area and whether you need multiple shelter locations to accommodate everyone.

Stock designated shelters with emergency supplies, including water, flashlights, first aid kits, batteries, and a NOAA Weather Radio. Make sure employees know where supplies are stored.

Include shelter locations, access routes, and related safety procedures in your emergency response plan and communicate them to employees before the drill.

Assign roles and responsibilities

Designated roles help your safety team coordinate the drill and keep employees informed throughout the exercise.

Assign a drill coordinator to oversee preparations, activate the exercise, and authorize its conclusion. Floor wardens or designated safety personnel can direct employees toward shelter areas and report accessibility problems or other concerns.

Your communications lead should manage employee notifications, while your accountability lead should confirm that employees, contractors, and visitors have reached their designated locations.

Assign alternates for each critical role. A real tornado warning may occur when your primary coordinator is away from the office or unavailable.

Jay Dunne emphasizes the importance of interdepartmental communication when assessing organizational climate risks. As he advises, “You’ve got to get out and talk to these folks and develop the relationships. Ask, ‘Hey, what’s keeping you up at night?’”

Apply that same approach when planning your tornado drill. Facilities, security, HR, and communications teams may each identify risks or responsibilities that others have overlooked.

How to Conduct a Tornado Drill at Work: Step-by-Step

Once you have established your tornado safety plan, you are ready to put your tornado drill procedures into practice. The following steps explain how to conduct a tornado drill at work, from scheduling and activating the exercise to taking shelter and returning to normal operations.

Step 1. Determine how often to run tornado drills

At minimum, conduct a tornado sheltering drill annually, consistent with OSHA guidance. Facilities in tornado-prone regions may benefit from additional exercises before the severe weather season.

The calendar is only one trigger. Run another drill after an office move, a major renovation, a shelter change, or a period of high employee turnover. Those changes can make familiar routes, roles, and instructions obsolete. The same principle applies to other emergency exercises, including your fire drill procedures.

Choose a time with input from facilities, operations, and local supervisors. Employees should know when a planned exercise will occur and how it differs from a public test or statewide drill. A distribution center, for instance, may need to pause loading activity so employees can move to shelter without creating a forklift or dock hazard.

Do a final weather and alert check before starting. A routine weekly test of local sirens can blur the line between practice and a real warning, so keep the two events separate. If authorities issue an actual tornado warning, end the exercise and move directly into your emergency procedures.

Step 2. Start the drill with an alert and notification

The exercise begins with the alert. At the scheduled time, the drill coordinator sends the tornado notification and starts the clock for any response-time measurements.

Use the emergency alert systems employees would rely on during a real event, including the public address system, emergency notification platform, and designated mobile alerts. Mark every message clearly as a drill, but keep the instructions, sender, and sequence realistic.

During an actual emergency, threat monitoring systems and authoritative sources such as the National Weather Service, NOAA Weather Radio, and Wireless Emergency Alerts (WEA) can help your team identify a developing tornado threat. Your internal notification systems then turn that warning into workplace-specific instructions, such as when and where employees should take shelter. Because outdoor warning sirens primarily warn people outside, don’t rely on them as your only way to receive tornado warnings indoors.

Picture an office connected to a noisy warehouse. Mobile alerts reach both groups, but only office employees hear the public address announcement. That result indicates that the safety team should add visual signals, targeted texts, or another channel for the warehouse floor.

Step 3. Direct employees to take shelter

Once the alert arrives, the plan should feel simple from the employee’s perspective: stop work, follow the assigned route, and enter the designated tornado shelter. Floor wardens guide movement, keep people away from hazardous areas, and assist anyone covered by the organization’s accessibility procedures.

Evaluate both the route and the travel time. Employees should avoid windows, exterior doors, and exposed areas without running or pushing. Inside the shelter, have them move away from entrances, crouch low, and practice protecting their heads and necks from flying debris.

During a real tornado warning, employees should remain in the safest available shelter until the threat passes and an authorized leader gives the all-clear.

Accountability begins as people enter the shelter. Assigned personnel should compare arrivals with the current on-site roster, including contractors and visitors, and immediately report anyone who is unaccounted for.

A drill may reveal that a narrow hallway backs up when two departments arrive together, or that stored supplies reduce the shelter’s usable capacity. Record these details as they happen. Specific observations give you something concrete to fix when you refine your tornado drill procedures.

Step 4. Communicate throughout the drill

Communication changes as the drill unfolds. The first message instructs people to shelter, later updates confirm what is happening, and the final message releases them. Your plan should name the sender and channel for each phase.

Keep each message brief and action-oriented. The opening alert should identify the exercise and direct employees to shelter. After teams arrive, a short update can confirm that the drill remains active and that participants should stay in place.

Information must also travel back to the communications lead. Floor wardens need a defined way to report accountability totals, missing employees, medical concerns, or requests for assistance.

Build one communications failure into the exercise. A tornado may interrupt electricity, cellular service, or internet connectivity, and the drill should show whether your backup method can carry the response. Choose a realistic disruption for the site rather than trying to simulate every possible failure at once.

At a corporate office, the facilitator might disable the internal messaging platform after the first alert. The team would then have to deliver updates via text messages, the public address system, or floor wardens, to determine whether the fallback process can reach everyone.

Prewritten emergency messages can help your team communicate consistently without having to develop instructions during an unfolding incident.

AlertMedia’s Tornado Communication Templates provide ready-to-adapt messages for notifying employees before, during, and after a tornado. Incorporate these templates into your drill to test your communication procedures under realistic conditions.

Step 5. Issue the all-clear and return to normal operations

The all-clear marks a decision point based on the completion of safety and accountability checks. Before concluding the exercise, the drill coordinator should confirm that participants reached shelter, accountability is complete, and observers captured the planned test points.

Send the all-clear through the same channels used for the opening alert so employees can recognize the full communication sequence. The message should state that the drill has ended and specify when and how employees should return to their work areas.

During an actual tornado, however, the all-clear depends on confirmed conditions, not simply the completion of accountability and response procedures. The safety team must verify through reliable official weather information that the immediate threat has ended before anyone leaves the shelter. An outdoor siren may stop while dangerous conditions remain, so wait for explicit confirmation.

Weather clearance addresses only the tornado threat. Facilities or security personnel may still need to check for structural damage, downed power lines, broken glass, debris, or blocked exits before authorizing movement or reentry.

A separate severe weather tabletop exercise can take the scenario further, testing how your organization would respond if a tornado closed the primary entrance, cut power, damaged the facility, or delayed emergency responders. These tabletop exercise scenarios can expose recovery and continuity gaps that a sheltering drill alone may not reveal.

Evaluating Your Tornado Drill and Closing Preparedness Gaps

A tornado drill creates a controlled opportunity to see how the plan works in practice. The evaluation should reconstruct what happened from the first alert through the all-clear, including how quickly messages reached employees, how people moved through the building, and whether coordinators could account for everyone.

Hold a hot wash the same day, while the details remain fresh. Invite floor wardens, facilities staff, communications leads, employees, and anyone who assisted a visitor or colleague with an accessibility need.

Ask participants to describe what they saw at each stage of the drill, then review their observations alongside alert-delivery records, shelter-arrival times, and accountability data. Together, these inputs can reveal problems that a general question about whether the drill went well would miss.

Consider a warehouse where office employees receive the mobile alert immediately, but the noise from machinery prevents floor workers from hearing the public address announcement. The designated shelter then fills beyond its planned capacity, and the accountability lead cannot confirm whether two delivery drivers reached safety. With this scenario, a single drill can expose gaps in alert coverage, shelter capacity, and visitor tracking.

Look for the cause behind each problem. A slow shelter time may point to unclear signage, a blocked route, or confusion about whether employees should collect personal items. A missing name may stem from an outdated roster or a front desk process that fails to capture contractors and visitors. Finding the cause helps your team choose a practical correction.

Jay Dunne’s Hurricane Sandy example shows why the review should extend beyond the building. “Where’s your workforce? It’s in the dark and underwater, and their lives are severely disrupted.” A facility may maintain power and complete its internal accountability check while employees, transportation networks, cellular service, and emergency responders face widespread disruption.

Use the drill to examine those dependencies. Identify the systems, services, people, and outside resources your procedures assume will remain available—and whether your fallback will actually work if they don’t. For example, test how you would communicate during an internet outage, who could issue the all-clear if the primary coordinator were unavailable, and how employees would remain sheltered if emergency responders were delayed.

Capture the findings in an after-action report that names each corrective action, its owner, and its deadline. Prioritize issues that could delay sheltering or leave people unaccounted for, then update the procedures and training materials. Use a follow-up drill to test the changes and confirm that the fixes work under realistic conditions.

Tornado Drill Checklist

Use this checklist to confirm that you have covered the essential steps before, during, and after your workplace tornado drill.

• Review your tornado safety plan and applicable requirements
• Confirm designated shelter locations and accessibility
• Assign drill coordinators, floor wardens, and backup personnel
• Check weather conditions before starting
• Test emergency alerts and employee notifications
• Direct employees to shelter and account for personnel
• Issue the all-clear and conclude the exercise
• Conduct a hot wash and document corrective actions

Prepare Your Team Before the Next Tornado Warning

A well-run tornado drill gives your employees the opportunity to practice seeking shelter, understand their responsibilities, and become familiar with your emergency communication procedures. Just as importantly, it exposes gaps in your plan while there is still time to correct them.

Clear, actionable communication is essential to that preparation. Employees need to know when to take shelter, what to do while the threat continues, and when it is safe to resume normal operations.

Download AlertMedia’s Tornado Communication Templates to prepare consistent, actionable messages for every phase of a tornado emergency.