Lisa has completely dissipated under the influence of deep vertical wind shear and dry air. Lisa is no longer a threat.
However, another disturbance is being monitored in the northern Caribbean Sea. This disturbance was actually a shortwave in the Subtropical jet stream over the Tennessee River Valley at the start of last week. Since then, the disturbance has drifted to the south of Hispaniola. The disturbance is currently an extratropical disturbance but could pick up some tropical characteristics as a Subtropical disturbance while drifting back towards the United States, specifically Florida. Overall this disturbance is expected to mature as a broad low-pressure system with a clear upper-level low-pressure system, but a warm core below 850 MB could develop while drifting over the Bahamas next week. The disturbance is expected to produce widespread rainfall initially over Florida by Wednesday and then be drawn northward into the Northern Mid-Atlantic by Friday.
