3 ms·I love this, very clean and straight forward. I wonder how often the data is updated..?by rollypolly 15y agoI love this, very clean and straight forward. I wonder how often the data is updated..?vyrotek 15y agoI assumed it was real-time since each car has a live video stream as well.marquis 15y agoIt's using GPS, so it's live. Go back tomorrow during the day and you might catch a real tornado. Not sure what time of day is best, I assume the late afternoon after the weather heats up.