What does the National Weather Service say about a tornado before it happens?
Even the NWS doesn’t know there IS going to be a tornado until it has formed. Whenever weather conditions that may produce tornadoes exist, they issue a “Tornado Watch” for the area. They monitor their equipment (especially the dopler radar) to determine where one MAY be forming and which direction it will travel if it forms. Once a funnel cloud has formed, they issue a “Tornado Warning” and predict it’s path.
