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Tropical Storm Helene Public Advisory Number 6A
2018-09-09 01:37:10| National Hurricane Center (Atlantic)
Issued at 800 PM AST Sat Sep 08 2018 563 WTNT33 KNHC 082337 TCPAT3 BULLETIN Tropical Storm Helene Intermediate Advisory Number 6A NWS National Hurricane Center Miami FL AL082018 800 PM AST Sat Sep 08 2018 ...HELENE EXPECTED TO PRODUCE TROPICAL STORM CONDITIONS FOR PORTIONS OF THE CABO VERDE ISLANDS TONIGHT AND SUNDAY... SUMMARY OF 800 PM AST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...13.6N 22.2W ABOUT 125 MI...200 KM SE OF PRAIA IN THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * The Cabo Verde islands of Santiago, Fogo, and Brava A Tropical Storm Warning is in effect for... * The Cabo Verde islands of Santiago, Fogo, and Brava A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within the next 12 to 24 hours. 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 800 PM AST (0000 UTC), the center of Tropical Storm Helene was located near latitude 13.6 North, longitude 22.2 West. Helene is moving toward the west near 13 mph (20 km/h), and this general motion will likely continue through Sunday. A gradual turn toward the west-northwest with an increase in forward speed is expected Sunday night through Tuesday. On the forecast track, Helene will pass very close to the southern Cabo Verde Islands tonight and early Sunday. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Strengthening is expected during the next few days, and Helene is forecast to become a hurricane on Sunday. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 998 mb (29.47 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected to first reach the warning area during the next several hours. Hurricane conditions are possible in the southernmost Cabo Verde Islands on Sunday. RAINFALL: Helene is expected to produce total rain accumulations of 3 to 5 inches over the southern Cabo Verde Islands through Sunday, with isolated maximum amounts of 8 inches. This rainfall may produce life-threatening flash floods. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Beven
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