Stationary fronts are notorious for producing flooding because the front, which serves as the lifting mechanism for the storms, doesn't move with time. Therefore, storms repeatedly form and follow one another over the same location. What do meteorologists call this type of thunderstorm behavior?

Answer: Super cell thunderstorm

Explanation: When cold and warm air masses collides with each other, balancing the total air mass, then this condition is called the stationary front. This front often creates heavy flooding occurring in a particular region with heavy thunderstorm, which is known as the super cell thunderstorm.

Super cell thunderstorm are enormous, destructive storms which are formed due to the instability in the air masses, moisture content in the air masses, wind speed as well as lifting mechanism of the air mass. It is the strongest of all the thunderstorm types.