Formation chances surge: Invest 91-L in Gulf strengthens, could become a tropical depression

The National Hurricane Center is closely monitoring Invest 91-L, a tropical disturbance that formed off the Gulf Coast on Saturday morning. As the system continues to intensify, formation chances have increased substantially, with a high probability of development into a tropical depression. According to the NHC's 8 a.m. update on Sunday, the formation chances have reached an 80% likelihood, indicating that a tropical depression is likely to form later today or on Monday as the system moves slowly northward or northwestward.

The NHC has been tracking the system since its formation, and the associated shower and thunderstorm activity has been gradually increasing. The disturbance is expected to bring heavy rain to central Florida throughout the weekend, and tropical storm watches or warnings may be issued for parts of the northern Gulf Coast later today. The Air Force Reserve reconnaissance aircraft is scheduled to fly on Sunday afternoon to gather more data on the system and provide a more accurate forecast. The NHC's forecast models indicate that the system is likely to continue its development, and a tropical depression could form as early as today or Monday.

Invest 91-L's formation chances have increased significantly in the past 24 hours, with the NHC's forecast models indicating a high probability of development. The system is being closely monitored by the National Hurricane Center, and updates will be provided as necessary. Residents along the Gulf Coast, particularly in Florida, Alabama, Mississippi, and Louisiana, should stay informed about the latest developments and prepare for potential tropical storm watches or warnings.

The NHC has provided several useful resources for residents to stay informed about the system, including the latest forecast updates, advisory maps, and tracking information. In addition, residents can download the WESH 2 News app to receive weather alerts and the most up-to-date information on the system. The First Warning Weather team, including Chief Meteorologist Tony Mainolfi, Eric Burris, Cam Tran, and Victoria Wisniewski, will continue to provide live coverage and updates throughout the weekend.

The 2026 hurricane season has seen several tropical disturbances in the Atlantic and Gulf of Mexico, but Invest 91-L's formation chances have increased significantly in the past 24 hours. The NHC's forecast models indicate that the system is likely to continue its development, and a tropical depression could form as early as today or Monday. Residents along the Gulf Coast should stay informed about the latest developments and prepare for potential tropical storm watches or warnings.

Heavy rain is expected to hit Florida's Gulf Coast throughout the weekend, regardless of the system's development. The NHC has warned that residents should be prepared for potential flash flooding, especially in low-lying areas. The First Warning Weather team will continue to monitor the situation and provide live coverage and updates throughout the weekend.

Stay informed about the latest developments with the WESH 2 News app and by following the First Warning Weather team on social media. Download the app to receive weather alerts and the most up-to-date information on the system. The NHC will continue to provide updates and forecasts as necessary, and residents should stay tuned to local news and weather reports for the latest information.

Invest 91-L's formation chances have increased significantly in the past 24 hours, with the NHC's forecast models indicating a high probability of development. The system is being closely monitored by the National Hurricane Center, and updates will be provided as necessary. Residents along the Gulf Coast should stay informed about the latest developments and prepare for potential tropical storm watches or warnings.