I missed the 'uh oh' part as well.
I had a lot of 'uh-ohs' so I'll pick my favorite: May 24th. Started in southern Nebraska, as usual, and witnessed the birth of the supercell that eventually produced the Albany, Missouri tornado. But on its way to that fame and fortune, it took a dump near the Missouri border--looked awful both visually and on radar, then the tornado warning was dropped.
That sequence of degradation, along with heading into the trees and hills (confirmed by three Missouri residents caravaning with me) fit all the criteria for abandoning a storm. So we left it and raced back west to the Republic County, Kansas storm which had been producing multiple tornadoes, a trapeeze act, and a monkey who could read Joyce through a megaphone.
We put a stop to that.
As soon as we arrived, the storm produced one last meager midlevel funnel and became post-FROPA elevated with a big sign hung under the RFB: "You should have seen me an hour ago. Wow."
So, we raced to Topeka, where new storms were firing, and some inside information alleged that the SPC was VERY concerned about convection in that area, with a combination of good instability and mammoth SRH values. They produced all right, but well before we arrived, and were solidly HP mushbomb material by the time we had them in our viewfinders.
I stopped answering on the radio and drove south, without a destination--frustrated beyond belief--and thinking I could make Mexico by morning and assume an alias to avoid the shame and infamy of May 24th, 2004.