175 WTNT31 KNHC 311437 TCPAT1 BULLETIN Potential Tropical Cyclone Six Advisory Number 5 NWS National Hurricane Center Miami FL AL062018 1100 AM AST Fri Aug 31 2018 ...A TROPICAL STORM HAS NOT FORMED YET BUT STRONG GUSTY WINDS AND HEAVY RAINS ARE STILL EXPECTED OVER THE SOUTHERN CABO VERDE ISLANDS LATER TODAY... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...13.7N 22.7W ABOUT 135 MI...220 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 to 24 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the disturbance was centered near latitude 13.7 North, longitude 22.7 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 move 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. * 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 intermediate advisory at 200 PM AST. Next complete advisory at 500 PM AST. $$ Forecaster Avila