Although extremely sleep deprived, we were up at the crack of dawn onto what would be our last storm chase that trip. Our target was north central Missouri where a slight risk of storms were predicted by the US Storm Prediction Centre (SPC). Although the early morning was overcast, by midday predictions came true as humidity and temperatures reached nearly unbearable levels. Being still a good couple of hundred miles away, we pushed on hoping to get there for initiation which Martin predicted to be around late afternoon. This is when the storm is at its highest chance of putting down a tornado so we had to be there at all costs! Due to restrictions with our rental car we could not exit Missouri to the north or east so we waited on the extreme northern border as storms developed in southern Iowa. As we predicted the storms immediately crossed over the border where we chased the largest and most furious looking of the storms. A wall cloud developed beneath the storm which is a good indication that it has become tornadic. Without any warning a funnel cloud began to form but without any visible circulation on the ground, so unfortunately could not be defined as a tornado!