979 WTNT31 KNHC 301734 TCPAT1 BULLETIN Potential Tropical Cyclone Six Intermediate Advisory Number 1A NWS National Hurricane Center Miami FL AL062018 200 PM AST Thu Aug 30 2018 ...HEAVY RAINS AND GUSTY WINDS EXPECTED IN THE SOUTHERN CABO VERDE ISLANDS ON FRIDAY... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...12.9N 19.0W ABOUT 335 MI...540 KM ESE OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Santiago * Fogo * Brava A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the disturbance was centered near latitude 12.9 North, longitude 19.0 West. The system is moving toward the west near 12 mph (19 km/h), and this general motion with a gradual turn toward the west-northwest is expected to continue during the next few days. On the forecast track, the disturbance is expected to move near or over the southern Cabo Verde Islands on Friday. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Some strengthening is forecast during the next 48 hours, and the disturbance is expected to become a tropical storm during the next day or so. Environmental conditions are favorable for the system to become a tropical cyclone tonight or Friday. * Formation chance through 48 hours...high...80 percent * Formation chance through 5 days...high...90 percent The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The system could produce total rain accumulations of 4 to 8 inches across the southern Cabo Verde Islands. These rains could produce life-threatening flash floods. WINDS: Tropical storm conditions are expected in the southern Cabo Verde Islands on Friday. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Avila