Tropical Storm Ernesto brought wind and rain to the Leeward Islands on Tuesday morning.  At 8:00 a.m. EDT on Tuesday the center of Tropical Storm Ernesto was located at latitude 16.6°N and longitude 61.9°W which put the center about 35 miles (55 km) northwest of Guadeloupe.  Ernesto was moving toward the west at 18 m.p.h. (30 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1005 mb.

Tropical Storm Warnings were in effect for Guadeloupe, St. Martin, St. Barthelemy, St, Kitts, Nevis, Montserrat, Antigua, Barbuda, Anguilla, Saba, St. Eustatius, Sint Maarten, the British Virgin Islands, the U.S. Virgin Islands, Puerto Rico, Culebra, Vieques.

More thunderstorms formed near the center of Tropical Storm Ernesto on Tuesday morning.  Those thunderstorms generated more upper level divergence that removed mass from the tropical storm.  The removal of more mass cause the surface pressure to decrease.  More thunderstorms also developed in bands revolving around the center of Ernesto’s circulation

The strongest winds were occurring in the northern side of Tropical Storm Ernesto.  Winds to tropical storm force extended out 70 miles (110 km) in the northern side of Ernesto’s circulation.  The winds in the southern part of Ernesto were blowing at less than tropical storm force.

Tropical Storm Ernesto will move through an environment favorable for intensification during the next 24 hours.  Ernesto will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over the subtropical Atlantic Ocean.  The ridge will produce easterly winds that will blow toward the top of Ernesto’s circulation. Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification.  Tropical Storm Ernesto will intensify during the next 24 hours.

Tropical Storm Ernesto will move around the southern side of a subtropical high pressure system over the Atlantic Ocean.  The high pressure system will steer the tropical wave quickly toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ernesto will reach Puerto Rico on Tuesday night.

Tropical Storm Ernesto will bring gusty winds and locally heavy rain to the Leeward Islands, the British Virgin Islands, the U.S. Virgin Islands and Puerto Rico.  Heavy rain is likely to cause flash floods in some locations.  The winds could be strong enough to cause localized outages of electricity.  Ernesto could also cause a storm surge of up to 4 feet (1 meter).