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Tropical Storm Helene Public Advisory Number 27A
2018-09-14 07:38:24| National Hurricane Center (Atlantic)
Issued at 200 AM AST Fri Sep 14 2018 766 WTNT33 KNHC 140538 TCPAT3 BULLETIN Tropical Storm Helene Intermediate Advisory Number 27A NWS National Hurricane Center Miami FL AL082018 200 AM AST Fri Sep 14 2018 ...HELENE HEADING NORTH... ...EXPECTED TO PASS NEAR THE AZORES THIS WEEKEND... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...29.7N 36.2W ABOUT 815 MI...1310 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 200 AM AST (0600 UTC), the center of Tropical Storm Helene was located near latitude 29.7 North, longitude 36.2 West. Helene is moving toward the north near 21 mph (33 km/h). A turn toward the northeast is expected over the weekend. On the forecast track, Helene will pass 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 complete advisory at 500 AM AST. $$ Forecaster Zelinsky
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