Tropical Cyclone 25L (Gamma)…is located 85 miles north-northwest of Tulum, Mexico
Disorganized showers and thunderstorms continue in association with a tropical wave located over the central tropical Atlantic. Some slow development of this system is possible during the next couple of days while it moves west-northwestward or northwestward at 10 to 15 mph. Significant development is not expected beyond that time due to the system moving into a region of strong upper-level winds.
* Formation chance through 48 hours…low…20 percent
* Formation chance through 5 days…low…20 percent>>>An area of disorganized showers and thunderstorms over the central Atlantic more than 1000 miles east-southeast of Bermuda is associated with a surface trough of low pressure. This system is expected to move toward the west-southwest at around 10 mph, and some slow development is possible during the next couple of days before it too encounters strong upper-level winds.
* Formation chance through 48 hours…low…10 percent
* Formation chance through 5 days…low…10 percent
Here’s a satellite image of the Atlantic Ocean
A tropical wave located over the central Caribbean Sea is producing an area of disorganized showers and thunderstorms. Environmental conditions are expected to become more conducive for development, and a tropical depression is likely to form during the early or middle portions of next week while the system moves westward or west-northwestward at about 15 mph across the central and western Caribbean Sea and then into the southern Gulf of Mexico. Locally heavy rainfall and gusty winds will be possible across portions of Hispaniola, Jamaica, Cuba, and the Cayman Islands during the next few days, and interests on those islands should monitor the progress of this disturbance.
* Formation chance through 48 hours…medium…40 percent
* Formation chance through 5 days..high…70 percent
WSI satellite image of the Caribbean Sea
Gulf of Mexico: Tropical Cyclone 25L (Gamma)
Here’s what the computer models are showing
According to the NHC Advisory 7…Gamma is moving toward the northwest near 7 mph (11 km/h) and a turn toward the north-northwest with decreasing forward speed is expected on Sunday, followed by a turn to the west or west-southwest Sunday night or Monday. On the forecast track, the center of Gamma will move offshore of the Yucatan Peninsula and over the southern Gulf of Mexico on Sunday, and pass near or north of the northern coast of the Yucatan Peninsula Monday and Tuesday. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Little change in strength is forecast during the next few days. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center.
HAZARDS AFFECTING LAND
RAINFALL: Gamma is expected to produce rainfall of 4 to 8 inches across portions of the Yucatan Peninsula and far western Cuba, with maximum rainfall amounts as high as 10 to 15 inches possible across northeastern Quintana Roo and northern Yucatan. This rainfall may produce life-threatening flash floods.
A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, northern Chiapas, and southeast Veracruz, with rainfall of 6 to 8 inches and isolated maximum amounts of 12 inches. This rainfall may produce life-threatening flash floods and mudslides. The storm will also result in an area of heavy rains to the south that will affect the Gulf of Fonseca region between eastern El Salvador, southern Honduras, and northwest Nicaragua with accumulation of 4-6 inches and isolated maximum amounts of 8 inches.
Additional rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected over the Cayman Islands.
WIND: Hurricane conditions are expected within the Hurricane Warning area during the next few hours. Tropical storm conditions are spreading into the Tropical Storm Warning area on the east coast of the Yucatan Peninsula, and these conditions should spread across the remainder of the warning area through Sunday. Tropical Storm conditions are possible within the Tropical Storm Watch area later today and on Sunday.
STORM SURGE: A dangerous storm surge will raise water levels by as much as 1 to 3 feet above normal tide levels along the immediate coast near and to the north of where the center makes landfall. Near the coast, the surge will be accompanied by large and destructive waves.
Latest satellite image of the Caribbean Sea and the Gulf of Mexico