In an update issued at 2 a.m. EDT, the NHC said Invest 94-L was located about 380 miles east/southeast of the Leeward Islands, producing disorganized showers and thunderstorms.
Environmental conditions are expected to be conducive for some development over the next few days, and a tropical depression could form while the low moves west-northwestward at about 15 mph, according to the report. The disturbance is forecast to reach portions of the Lesser Antilles by late Monday, then move near the Virgin Islands and Puerto Rico on Tuesday, and be near Hispaniola around the middle of this week.
Tropical storm watches or warnings could be required with shorter-than-normal lead times for portions of the Leeward Islands, the Virgin Islands, and Puerto Rico. In addition, heavy rains and flooding are likely for the Leeward Islands, Virgin Islands, and Puerto Rico. The NHC forecasters urged people in those areas to monitor the progress of this system.
The forecast gave 94-L a 50 percent chance of intensifying over the next 48 hours, and a 60-percent chance of intensifying in the next five days.
A second system is producing disorganized showers and thunderstorms about 1,000 miles east of the Lesser Antilles. Development of this system is becoming less likely during the next few days while it moves toward the west or west-southwest at around 10 mph, the National Hurricane Center said, giving the system a 20 percent chance of formation through the next 48 hours, and only 30 percent in the next five days.