This weekend’s storms have drawn attention to the quick nature of tornadoes and the importance of having multiple ways to get severe weather warnings.

What people shouldn’t do, according to the National Weather Service, is rely only on outdoor weather sirens.

The hundreds of weather sirens around Alabama are designed to alert people who are outdoors to the potential of danger. They are not designed to be heard indoors or wake you from sleep and, because of the quick spin-up nature of tornadoes, sirens alone may not provide you enough time to seek shelter.