Hurricane Helene is forecast to weaken over the eastern Atlantic Ocean, and interests in the Azores islands should monitor the storm's progress.
The severity is measured on the Saffir-Simpson Hurricane Wind Scale which is a 1 to 5 rating, or category, based on the maximum sustained winds. Because hurricane preparedness activities become hard once winds reach tropical storm force, the hurricane watch is issued 48 hours in advance of the anticipated onset of tropical storm force winds. The storm is moving to the northwest at 15 miles per hour and is expected to slow down later today and drift west toward southeastern NC. A fifth would add to an already crowded map that includes Hurricane Florence, which is expected to make landfall in the Carolinas Friday, and tropical storms Helene, Issac and Joyce.
Hurricane and tropical storm watches have been posted for several Caribbean islands as a weakening Tropical Storm Isaac continues its trek toward the Leeward and Windward Islands.
The current forecast is that "Storm Helene" or "ex-Tropical Storm Helene" will be to the south of Ireland on Monday night (September 17).
The storm has a raincloud band that's 900 kilometers wide - and it's coming alongside monsoon rains, creating risks for flash floods and landslides. In coastal North Carolina, this could be 20 to 30 inches, isolated up to 40 inches in some areas, which could lead to catastrophic flooding.
Florence Moves Toward the Carolinas
But his partner, Emily Whisler, said she will remain behind at the university where she is a resident in the psychiatry program. Some 38cm (15in) to 64cm (25in) of rain is forecast in some areas - with up to one metre (40in) at the centre of the storm.
The storm is likely to die out by Wednesday.
Forecasters have warned of life-threatening storm surges, catastrophic flooding, damaging winds, and risky rip currents along the coastlines of North Carolina, South Carolina, and Virginia. Tropical storm wind conditions are possible within this area by late Saturday, says the NHC. Maximum sustained winds have decreased to near 35 miles per hour (55 kph) with higher gusts.
The storm is tracking to the west at 16 miles per hour.
The NHC forecast track shows the storm decreasing in forward speed as it heads west towards Central America.
"Regardless of development, heavy rainfall and gusty winds are expected across portions of northeastern Mexico, Texas, and Louisiana late this week, and interests there should monitor the progress of this system", it added.