BULLETIN Tropical Depression Twenty Advisory Number 4 NWS National Hurricane Center Miami FL AL202020 1100 AM AST Sun Sep 13 2020 ...TROPICAL DEPRESSION FORECAST TO BECOME A TROPICAL STORM TONIGHT... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...12.3N 36.4W ABOUT 1680 MI...2705 KM E OF THE LESSER ANTILLES ABOUT 870 MI...1395 KM WSW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Tropical Depression Twenty was located near latitude 12.3 North, longitude 36.4 West. The depression is moving toward the west-northwest near 10 mph (17 km/h). A motion toward the west or west-northwest across the eastern and central tropical Atlantic is expected through Tuesday, followed by a turn toward the northwest Tuesday night or Wednesday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Strengthening is forecast during the next few days. The depression is expected to become a tropical storm later today or tonight, and it could strengthen to a hurricane on Tuesday. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Large swells generated by Tropical Depression Twenty are expected to reach the Lesser Antilles and the northeastern coast of South America on Wednesday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.