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Tropical Storm Helene Public Advisory Number 3
2018-09-08 04:44:32| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Fri Sep 07 2018 041 WTNT33 KNHC 080244 TCPAT3 BULLETIN Tropical Storm Helene Advisory Number 3 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Fri Sep 07 2018 ...TROPICAL STORM HELENE FORMS BETWEEN THE COAST OF AFRICA AND THE CABO VERDE ISLANDS... ...EXPECTED TO BRING TROPICAL STORM CONDITIONS TO PORTIONS OF THE CABO VERDE ISLANDS SATURDAY NIGHT AND SUNDAY. SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...13.6N 18.5W ABOUT 405 MI...650 KM E OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Santiago, Fogo, and Brava A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- Satellite data indicate that the depression over the far eastern Atlantic has strengthened and is now Tropical Storm Helene. The center of the tropical storm is a little to the east of previously indicated position, and at 1100 PM AST (0300 UTC) was located near latitude 13.6 North, longitude 18.5 West. Helene is moving toward the west near 12 mph (19 km/h), and a westward to west-northwestward motion with a gradual increase in forward speed is expected during the next 72 hours. On this track, Helene will be passing very close to the southern Cabo Verde Islands during Saturday night and early Sunday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Some strengthening is forecast during the next 2 to 3 days, and Helene could become a hurricane early next week. Tropical-storm-force winds extend outward up to 70 miles (110 km). mainly to the south of the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected to first reach the warning area Saturday night or on Sunday. RAINFALL: Helene is expected to produce total rain accumulations of 3 to 5 inches, with maximum totals of 8 inches across the southern Cabo Verde Islands. This rainfall may produce life-threatening flash floods. NEXT ADVISORY ------------- Next intermediate advisory at 200 AM AST. Next complete advisory at 500 AM AST. $$ Forecaster Avila
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