Much like the "Code Red" alerts to buckle down for bad weather 2 hours after the storms have passed 
Yeah, I heard someone on the news talking about how it takes 1 hr, 17 min to make all those calls but that they only had 10 minutes warning.
Really?
I'm no meteorologist, but I could have told you at 6:30 that there was a big nasty storm on the way. I reckon when there's softball sized hail in Parker, Wise, Denton counties from a storm that's heading east it might be ok to go ahead and start calling people in Collin.