Each storm is clearly highlighted on the map and identified with a name, showing that Hurricane Florence is not the only storm looming. Rain chances also increase Saturday afternoon into Saturday night.
"Currently Helene is 2000km southwest of the Azores and remains a category 1 hurricane, with sustained winds of 130kph and gusts in excess of 170 kph".
Tropical storm-force winds extend outward up to 175 miles (280 kilometers) from its center.
Winds of tropical storm strength could reach Puerto Rico on Friday morning.
"Mild, very humid conditions are expected to develop during Monday, with rain moving up from the south in freshening southerly winds".
The National Hurricane Center states that these storm surges are highly likely along portions of the coastlines of North Carolina and SC. "Catastrophic flash flooding and prolonged significant river flooding are likely", the Hurricane Center said. The Appalachians could see 3 to 6 inches of rain, with isolated areas of 12 inches.
It's about the water, not the wind, with Hurricane Florence making an extended stay along the North Carolina coast.
Gradual weakening is forecast during the next 48 hours, but Olivia is expected to remain a tropical storm as it moves over the main Hawaiian Islands.
That is causing the so called "cone of uncertainty" to expand.
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Up to 1.7 million people have been ordered to evacuate across South Carolina, North Carolina and Virginia.
Wind gusts of up to 65mph are forecast with up to 80mph possible in more exposed areas.
The storm is expected to die down by Wednesday.
A spokeswoman said: "Basically Helene is in the Atlantic at the moment and is crossing the Atlantic and is expected to track towards the UK".
The National Hurricane Center says Hurricane Florence has finally made landfall near Wrightsville Beach, North Carolina.
The U.S. National Hurricane Center (NHC) provided the latest update on Hurricane Florence at 8 a.m. on September 12.
On Sunday alone there will be about two inches of rainfall.
As the storm continues toward Southeastern North Carolina, it will bring life-threatening storm surges, flooding and unsafe waves to the coast, the briefing said.
Blowing ashore with howling 90 miles per hour (155 kph) winds, Florence splintered buildings, trapped hundreds of people and swamped entire communities along the Carolina coast Friday in what could be just the opening act in a watery, two-part, slow-motion disaster.