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| #900905 (Received by flhurricane at: 4:47 AM 31.Aug.2017) TCPAT1 BULLETIN Tropical Storm Irma Advisory Number 4 NWS National Hurricane Center Miami FL AL112017 500 AM AST Thu Aug 31 2017 ...IRMA CLOSE TO HURRICANE STRENGTH... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...16.5N 32.9W ABOUT 590 MI...950 KM W OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 500 AM AST (0900 UTC), the center of Tropical Storm Irma was located near latitude 16.5 North, longitude 32.9 West. Irma is moving toward the west near 12 mph (19 km/h). A west-northwestward motion is expected today and tonight, followed by a generally westward motion on Friday. Maximum sustained winds have increased to near 70 mph (110 km/h) with higher gusts. Additional strengthening is forecast, and Irma is likely to become a hurricane later today. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 997 mb (29.44 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Pasch |
