Tropical Storm Elsa is expected to strengthen as it moves through the Caribbean Sea with the forecast path approaching South Florida by early Tuesday morning, according to the National Hurricane Center. Forecasters said the storm could become Hurricane Elsa, a Category 1, although there remains a lot of uncertainty in the forecasted track and strength of the cyclone. Here’s the latest forecast track, along with the “spaghetti models,” which shows the tracks predicted by various computer models to generate the forecast cone.