In just a “flash” our south Florida weather can transform from tranquil to turbulent! Many of you witnessed this (as did I, on the radar screen late Saturday). As the sun was setting, one small boundary… from a previous thunderstorm… was the spark for many more, south of Miami. The tiny cluster then grew into a die-hard bunch of storms that lit up the sky for much of southeast Florida for hours. Heavy and persistent rains also created the risk of flooding across and near Kendale Lakes, Palmetto Bay and Coral Gables. A street flood advisory was in effect as rains tallied up 2 to 3 inches during the evening time span. Of course, this type of event happens fairly frequently during the summer months. It teaches us to remain on guard even at seemingly benign times! This weekend, there are some “special ingredients” coming together to create bursts of storms, at times and in favored spots. Deep moisture, daytime heat and sea breeze boundaries are all conspiring. Additionally, there’s an upper disturbance (upper level low) that’s high above south Florida adding to the instability. This feature will drift westward on Sunday, still close enough to stir up more storms. Then, a separate upper low may arrive late Monday for yet another round, arriving from the Bahamas and western Atlantic. Since wind speeds are light and often erratic, local storms can waver in one direction or another… or even remain idle for awhile! Looking ahead, a steadier streamline of winds from the ocean should return by Tuesday and Wednesday. That should force the majority of storm action over western areas of south Florida. Some forecast models are also suggesting some drying by midweek, but it’s a bold call, for now.