Sept. 16 (UPI) Tropical Storm Helene became a post-tropical cycclone as it moved from the Azores, and approached Ireland and United Kingdom, the National Hurricane Center said Sunday.
Helene was downgraded from a Category 2 hurricane to a tropical storm Thursday. The center of Helene was about 405 miles north of the Azores, the NHC said in its latest and last advisory. Meteo France will issue additional forecasts.
Helene had maximum sustained winds of 50 mph and was moving northeast at 29 mph. Tropical-storm-force winds extend outward up to 230 miles from the center.
Some weakening is expected by Monday and Helene is forecast to be absorbed by another low pressure area by early Tuesday.
The storm is projected to continue to increase in forward speed during the next couple of days. On the forecast track, the post-tropical cyclone will approach Ireland and the United Kingdom on Monday.
"Interests in Ireland and the United Kingdom should consult products from their local meteorological service for information about potential impacts from Helene in those locations," the NHC said.
Swells along portions of the Azores, which will likely continue for a couple of days, could cause life-threatening surf and rip current conditions, the NHC said.
The two other tropical storms in the Atlantic, Florence and Joyce, became depressions Sunday.
Both storms' maximum sustained wind speeds were 35 mph.
Joyce was moving east-northeast 18 mph and it was 465 miles west-southwest of the Azores in the latest advisory. Florence was 40 miles west of Columbia, S.C., and 215 miles southwest of Raleigh, N.C. in the latest advisory.