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Tropical Storm Helene Public Advisory Number 27
2018-09-14 04:33:54| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Thu Sep 13 2018 557 WTNT33 KNHC 140233 TCPAT3 BULLETIN Tropical Storm Helene Advisory Number 27 NWS National Hurricane Center Miami FL AL082018 1100 PM AST Thu Sep 13 2018 ...HELENE FORECAST TO PASS NEAR THE AZORES ON SATURDAY... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...28.6N 36.5W ABOUT 885 MI...1425 KM SW OF LAJES AIR BASE IN THE AZORES MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...N OR 10 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...992 MB...29.30 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * All of the Azores Islands A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Helene was located near latitude 28.6 North, longitude 36.5 West. Helene is moving toward the north near 21 mph (33 km/h). The cyclone is expected to accelerate and turn toward the northeast over the weekend. On this forecast track, Helene will be passing near or over the Azores late Saturday or Sunday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Little change in strength is forecast during the next 48 hours. Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. The estimated minimum central pressure is 992 mb (29.30 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are possible within the watch area by late Saturday. RAINFALL: Helene is expected to produce total rainfall amounts of 2 to 4 inches across the Azores, with isolated amounts up to 8 inches across the western Azores. This rainfall may cause life-threatening flash flooding. SURF: Swells generated by Helene are affecting portions of the Azores. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 200 AM AST. Next complete advisory at 500 AM AST. $$ Forecaster Avila
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