ZCZC MIATCPAT3 ALL TTAA00 KNHC DDHHMM BULLETIN Hurricane Helene Advisory Number 21 NWS National Hurricane Center Miami FL AL082018 1100 AM AST Wed Sep 12 2018 ...HELENE FORECAST TO WEAKEN OVER THE EASTERN ATLANTIC... ...INTERESTS IN THE AZORES SHOULD MONITOR THE PROGRESS OF HELENE... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...20.3N 36.5W ABOUT 870 MI...1405 KM WNW OF THE CABO VERDE ISLANDS ABOUT 1350 MI...2170 KM SSW OF THE AZORES MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H PRESENT MOVEMENT...NNW OR 340 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...977 MB...28.85 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Azores should monitor the progress of Helene. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the eye of Hurricane Helene was located near latitude 20.3 North, longitude 36.5 West. Helene is moving toward the north-northwest near 14 mph (22 km/h). A turn toward the north and northeast with an increase in forward speed is expected during the next few days. Maximum sustained winds remain near 90 mph (150 km/h) with higher gusts. Gradual weakening is forecast over the next couple of days, and Helene is expected to become a tropical storm on Thursday. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The estimated minimum central pressure is 977 mb (28.85 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Avila NNNN
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