A tropical cyclone could develop near the Yucatan peninsula during the next few days. At 2:00 p.m. EDT on Friday the center of Invest 91L was located at latitude 16.0°N and longitude 84.3°W which put it about 400 miles (640 km) southeast of Cancun, Mexico. It was moving toward the northwest at 6 m.p.h. (10 km/h). The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h). The minimum surface pressure was 1007 mb.
A broad area of low pressure is over the western Caribbean Sea, Central America and the adjacent waters of the Eastern North Pacific Ocean. Several smaller, mesoscale centers of rotation appear to be revolving around the larger low pressure system. One of the mesoscale centers is over the Eastern North Pacific Ocean just west of the coast of Central America. One or two other mesoscale centers appear to be over the western Caribbean Sea near Honduras. The low level circulation is not currently well organized. It is broad and diffuse. Thunderstorms are clustered around the mesoscale centers, but large scale rainbands have not formed.
Westerly winds in the upper levels are are blowing over the top of the system. Those winds are creating moderate vertical wind shear which is inhibiting the development of the low pressure system. The upper level winds are forecast to weaken during the next few days and the wind shear will diminish. The Sea Surface Temperature of the water in the northwestern Caribbean Sea and Gulf of Mexico is near 30°C. The broad low pressure system could slowly organize during the next two to three days. The National Hurricane Center is indicating that there is a 70% probability of formation of a tropical cyclone near the Yucatan peninsula or over the southern Gulf of Mexico during the next five days. A reconnaissance plane is scheduled to investigate the low pressure system on Sunday, if necessary.
The broad low is southwest of a subtropical high pressure system over the Atlantic Ocean. The high is expected to steer the low toward the northwest during the weekend. On its anticipated track the low will move over the northwestern Caribbean Sea during the next several days. it could move into the Gulf of Mexico on Monday.
Elsewhere over the Atlantic Ocean, Tropical Storm Leslie continued to meander northeast of Bermuda. At 11:00 a.m. EDT on Friday the center of Tropical Storm Leslie was located at latitude 36.2°N and longitude 58.4°W which put it about 455 miles (730 km) northeast of Bermuda. Leslie was moving toward the north-northwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 986 mb.