The disturbance off the coast of Africa has organized into Tropical Storm Florence with 40 mph winds.

Florence will continue to track westward this weekend and turn more towards the northwest by the middle of next week. The system may gain some strength but cooler water and increased wind shear will limit its development. Florence will pull away from the Cabo Verde Islands later today and then head out into the Atlantic.

We are watching a tropical wave sitting over Haiti and the Dominican Republic. It will continue to track northwest, arriving in the Bay area on Labor Day.

The wave will move through an area of high wind shear as it heads to Tampa, so strengthening is unlikely over the next 2 days. Once the wave enters into the Gulf of Mexico conditions become more favorable for development. At that time the disturbance will be heading away from us.

The main impact from the tropical wave will be more widespread heavy rain for us. The area of red and purple highlights deep tropical moisture right over Tampa Bay on Labor Day. Rain chances jump to 70% for the Holiday.