2012 Atlantic hurricane season

The 2012 Atlantic Hurricane Season operationally extends from June 1 to November 30, dates that annually define the period of the most active tropical activity in the North Atlantic. The season began almost two weeks early on May 19, when Tropical Storm Alberto formed just off the United States Eastern Seaboard.

Tropical Storm Alberto
Tropical Storm Alberto originated from an area of low pressure about 100 miles southeast of Myrtle Beach, South Carolina. The system was forecasted ahead of time by multiple computer models. On the morning of May 19, the system quickly developed, and after organizing enough, the low pressure system was classified as Tropical Storm Alberto.

Invest 90L
Invest 90L was an area of low pressure that formed on February 5 in the Florida Straits region. During the day the storm became better organized and the storm was given a 30% chance of formation. However, as the storm moved northeast, it weakened and its circulation became loose. By the next morning, the storm had already fragmented apart. Nonetheless, Invest 90L brought heavy rains of up to 4" in the Florida Keys region.

Invest 91L
Invest 91L formed from an extratropical system that cut off from the jet stream and slowly acquired tropical characteristics a few hundred miles east of Bermuda on April 17. The storm was soon designated as an invest even though the National Hurricane Center did not operationally issue products for it. 91L dissapated the next day.

Invest 92L
Invest 92L was an area of low pressure that formed on May 12 at an unusually high latitude near the Azores Islands. The hybrid system quickly developed intense thunderstorm activity near its center and a small eye like feature. The National Hurricane Center placed a 40% formation probability. 92L lost most of its convection during diurnal minimum but began to strengthen the next day. However, entering cool waters, the invest weakened and dissapated by May 15.