Potential Laura and Marco
- Both systems have been increased to a 50% chance of tropical development within the next 5 days by the National Hurricane Center. - The first system has been designated as Invest 97L. - I will have a full update by around 5:15 AM tomorrow, including Long Island weather.
- The following is from the National Hurricane Center: 1. Shower and thunderstorm activity has continued to increase in association with a fast-moving tropical wave located about 500 miles east of the Windward Islands. This disturbance is expected to move westward at about 20 mph during the next few days, and that fast forward speed is likely to limit significant development while the system approaches the Windward and southern Leeward Islands on Monday, and moves across the eastern Caribbean Sea on Tuesday. After that time, however, the system is expected to move more slowly westward across the central and western Caribbean Sea, where upper-level winds could become more conducive for the development of a tropical depression during the middle-to-latter part of this week. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...medium...50 percent.
2. Another tropical wave located over the far eastern tropical Atlantic well to the southeast of the Cabo Verde Islands is producing a large area of cloudiness and disorganized showers. The wave is forecast to move westward at 15 to 20 mph during the next few days, and environmental conditions are expected to become more conducive for the development of a tropical depression during the middle-to-latter part of this week while the system moves across the central tropical Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...medium...50 percent.