532 WTNT31 KNHC 311731 TCPAT1 BULLETIN Potential Tropical Cyclone Six Intermediate Advisory Number 5A NWS National Hurricane Center Miami FL AL062018 200 PM AST Fri Aug 31 2018 ...RAINBANDS AND GUSTY WINDS APPROACHING THE SOUTHERN CABO VERDE ISLANDS... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...13.8N 23.3W ABOUT 100 MI...165 KM SE OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Cabo Verde Islands of Santiago, Fogo, and Brava A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 12 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 13.8 North, longitude 23.3 West. The system is moving toward the west-northwest near 13 mph (20 km/h), and this motion with a slight increase in forward speed is expected to continue for the next three to four days. On the forecast track, the disturbance is expected to continue moving near or over the southern Cabo Verde Islands as a tropical storm later today and tonight. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Strengthening is forecast during the next several days, and the disturbance is expected to become a tropical storm later today or Saturday. Environmental conditions are favorable for the system to become a tropical cyclone later today or tonight. * Formation chance through 48 hours... high...90 percent * Formation chance through 5 days...high...90 percent The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The system could produce total rain accumulations of 2 to 4 inches across the southern Cabo Verde Islands with isolated maximum totals of 8 inches possible. These rains could produce life-threatening flash floods. WINDS: Tropical storm conditions are expected in the southern Cabo Verde Islands later today and tonight. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Avila