What’s the difference between a tornado watch and a tornado warning?
Tornadoes can be unpredictable, terrifying, and devastating. Any advance notice of the danger can be life-saving, and there are key differences in the information provided by the National Weather Service.
Tornado watch: Be prepared
The National Weather Service, or NWS, defines a tornado as a “violently rotating column of air extending from the base of a thunderstorm down to the ground.” According to the NWS, these weather phenomena are capable of obliterating well-made structures, uprooting trees, and hurling objects through the air like deadly missiles.
A tornado watch means that conditions are favorable for tornadoes to form. The NWS issues these watches when atmospheric conditions — such as unstable air, wind shear, and moisture — create an environment where tornadoes could develop. Tornado watches typically cover large areas and can last several hours.
What to do during a tornado watch:
- Stay informed by monitoring local NWS alerts and weather radios.
- Review your home’s emergency plan and identify your safest shelter.
- Ensure your emergency kit — including flashlights, batteries, water, and first-aid supplies — is up-to-date and readily available.
- Be ready to act quickly if conditions worsen.
Tornado warning: Take immediate action
A tornado warning is far more urgent than a watch. It means a tornado has been spotted or indicated by radar, and immediate action is necessary to protect lives and property.
What to do during a tornado warning:
- Seek shelter in a basement, storm cellar, or an interior room on the lowest floor away from windows.
- If you are in a mobile home or vehicle, get to a sturdy shelter quickly.
- Protect your head and neck with a helmet, blanket, or your arms.
- Stay sheltered until authorities confirm it is safe to emerge.
Conclusion
Misinterpreting a tornado watch or warning can lead to delayed responses or unnecessary panic. A watch means conditions are right for tornadoes, prompting preparedness. A warning means a tornado is occurring or imminent, requiring immediate action. Tornadoes can form in minutes, leaving little time for preparation. Knowing the difference between these alerts and having a safety plan in place is critical.
FAQs
* What is a tornado watch?
A tornado watch is issued when conditions are favorable for tornadoes to form.
* What is a tornado warning?
A tornado warning is issued when a tornado has been spotted or indicated by radar, and immediate action is necessary.
* What should I do during a tornado watch?
Monitor local NWS alerts and weather radios, review your emergency plan, and be ready to act quickly if conditions worsen.
* What should I do during a tornado warning?
Seek shelter, protect your head and neck, and wait for authorities to confirm it is safe to emerge.
