Undoubtedly, the long lead time saved countless lives. I'm one of a number of researchers at NOAA who are working on ways to combine all of the environmental, radar and other weather data into a computer model that will attempt to predict when the tornado will develop and how strong it will be as much as an hour in advance.
This "Warn on Forecast" concept, while showing promise, is still years away from being a reality.
So until then, when you hear the tornado sirens or tornado warning, take cover immediately. Like the people in Moore, your life may depend on it.
Follow us on Twitter @CNNOpinion
Join us on Facebook/CNNOpinion