952 WTNT33 KNHC 100237 TCPAT3 BULLETIN Hurricane Helene Advisory Number 11 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Sun Sep 09 2018 ...HELENE CONTINUES TO STRENGTHEN OVER THE EASTERN ATLANTIC... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...13.9N 27.2W ABOUT 195 MI...320 KM WSW OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Hurricane Helene was located near latitude 13.9 North, longitude 27.2 West. Helene is moving toward the west-northwest near 13 mph (20 km/h) and this motion is expected to continue for another couple of days. A turn to the northwest is forecast to occur on Wednesday. Maximum sustained winds have increased to near 85 mph (140 km/h) with higher gusts. Additional strengthening is expected during the next day or so, but slow weakening should begin by late Tuesday. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 984 mb (29.06 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The outer bands of Helene could produce up to one inch of additional rainfall over the southernmost Cabo Verde Islands during the next few hours. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Cangialosi