National Hurricane Center: Morning satellite imagery (Thursday, August 17, 2017) shows that shower activity associated with a low pressure system centered about 550 miles east of the Lesser Antilles has become better organized overnight, and buoy data indicates that the circulation is becoming better defined.
Environmental conditions appear generally conducive for development, and a tropical depression could form later today or tonight as the system moves westward at about 15 mph. Regardless of development, locally heavy rainfall and gusty winds are expected to spread across portions of the Lesser Antilles and the eastern Caribbean Sea tonight and Friday, and interests in these areas should monitor the progress of this system.
An Air Force Reserve Hurricane Hunter aircraft is scheduled to investigate the disturbance this afternoon.
- Formation chance through 48 hours…high…80 percent.
- Formation chance through 5 days…high…90 percent.
The St. Lucia MET Office issued the following weather forecast:
Shower and thunderstorm activity associated with a low pressure system centered about 470 miles or 756 kilometers east of the Lesser Antilles is becoming better organized. This system is expected to start affecting the region from tonight as it moves westward at about 15 to 20 mph or 24 to 31 km/h, and has the potential to become a tropical depression during the next 24 to 48 hours.
Residents and motorists in areas prone to flooding and landslides are advised to be vigilant and exercise extreme caution.
Small craft operators are advised to remain in port and other marine interests are advised to exercise caution. Residents are also advised to keep away from the beaches.