Hurricane Florence’s excessive rainfall to trigger natural disaster in the Carolinas

With Florence slowing substantially as it meanders along the coast of North and South Carolina, the current forecast of feet of rain could lead to catastrophic flash flooding and major river flooding in parts of the Carolinas and possibly other neighboring states.

Some communities in the Carolinas may be under water for days and possibly a week or more.

As AccuWeather meteorologists have warned about since the middle of the soggy and in some cases record wet summer, any tropical storm or hurricane that moves over saturated ground in the eastern United States during the height of the hurricane season may lead to disastrous flooding.

Image via AccuWeather

"Strength, track and forward speed of Florence will be the major players in determining the scope and amount of rainfall and correspondingly the severity of inland flooding," according to AccuWeather Hurricane Expert Dan Kottlowski.

Brace for flooding on par with Floyd, Joaquin and other blockbuster hurricanes

Even in lieu of the worst-case scenario and Florence making landfall as a Category 2 or 3 hurricane, the storm has the potential to join the ranks of the costliest natural disasters in the history of the United States joining Irma, Maria and Harvey in 2017; Sandy in 2012; Katrina in 2005 and Andrew in 1992.

Image via AccuWeather

In addition to storm surge flooding, inland flooding will escalate from urban and poor drainage areas to small streams. However, even as torrential rain ceases days after the initial first drops from Florence, major rivers in the region are likely to reach major flood stage.

Record flooding is possible.

Following the State of Emergency that has been declared from Georgia to Maryland, property owners are urged to take action.

See images of the storm's destruction:

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Hurricane Florence makes landfall
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Hurricane Florence makes landfall
IN SPACE - SEPTEMBER 14: In this NOAA satellite handout image , shows Hurricane Florence as it made landfall near Wrightsville Beach, North Carolina on September 14, 2018. The National Hurricane Center reported Florence had sustained winds of 90 mph at landfall and was moving slowly westward at 6 mph. (Photo by NOAA via Getty Images)
MYRTLE BEACH, SC - SEPTEMBER 14: Storm clouds are seen over the 2nd ave pier as the force of Hurricane Florence is beginning to be felt on September 14, 2018 in Myrtle Beach, United States. Hurricane Florence is hitting along the North Carolina and South Carolina coastline bringing high winds and rain. (Photo by Joe Raedle/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A car goes through a flooded street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
MYRTLE BEACH, SC - SEPTEMBER 14: Clouds are seen over a deserted Ocean blvd as the force of Hurricane Florence is felt on September 14, 2018 in Myrtle Beach, United States. Hurricane Florence is hitting along the North Carolina and South Carolina coastline bringing high winds and rain. (Photo by Joe Raedle/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A car goes through a flooded street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A flooded street is seen as the outer bands of Hurricane Florence hits in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A car goes through a flooded street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: People try cross the street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A man tries to cross the street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: People try cross the street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: People try cross the street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: US military vehicle goes through a flooded street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
NORTH CAROLINA, USA - SEPTEMBER 13: A man tries to cross the street during the heavy rain of outer bands of Hurricane Florence in New Bern, North Carolina, United States on September 13, 2018. Hurricane Florence is expected to arrive on Friday along the North Carolina and South Carolina coastline. (Photo by Atlgan Ozdil/Anadolu Agency/Getty Images)
People walk on a local street as water from Neuse River starts flooding houses upon Hurricane Florence coming ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
A member of the U.S. Army walks through floodwaters near the Union Point Park Complex as Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
Water from Neuse River starts flooding houses as the Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
The Bank of America is seen covered in plywood as the Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
Docks broken by water from Neuse River are seen floating as Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
The Union Point Park Complex is seen flooded as the Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz TPX IMAGES OF THE DAY
Water from Neuse River floods houses as Hurricane Florence comes ashore in New Bern, North Carolina, U.S., September 13, 2018. REUTERS/Eduardo Munoz
MYRTLE BEACH, SC - SEPTEMBER 14: Linda Stephens checks out the weather as the force of Hurricane Florence is beginning to be felt on September 14, 2018 in Myrtle Beach, United States. Hurricane Florence is hitting along the North Carolina and South Carolina coastline bringing high winds and rain. (Photo by Joe Raedle/Getty Images)
A tree bends from the heavy rain and wind from Hurricane Florence in Wilmington, North Carolina on September 14, 2018. - Florence smashed into the US East Coast Friday with howling winds, torrential rains and life-threatening storm surges as emergency crews scrambled to rescue hundreds of people stranded in their homes by flood waters. Forecasters warned of catastrophic flooding and other mayhem from the monster storm, which is only Category 1 but physically sprawling and dangerous. (Photo by ANDREW CABALLERO-REYNOLDS / AFP) (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteers from the Civilian Crisis Response Team help rescue three children from their flooded home September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
Jeremiah Johnson, a front desk clerk at the Sleep Inn in Jacksonville, North Carolina, attempts to reattach the front doors of the hotel on September 14, 2018, after the hotel lost power in the evening during Hurricane Florence. - Florence smashed into the US East Coast Friday with howling winds, torrential rains and life-threatening storm surges as emergency crews scrambled to rescue hundreds of people stranded in their homes by flood waters. Forecasters warned of catastrophic flooding and other mayhem from the monster storm, which is only Category 1 but physically sprawling and dangerous. (Photo by Logan Cyrus / AFP) (Photo credit should read LOGAN CYRUS/AFP/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteers from the Civilian Crisis Response Team rescue a man with chest pains from his flooded home September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteers from the Civilian Crisis Response Team help rescue three children from their flooded home September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteers from the Civilian Crisis Response Team help rescue three children from their flooded home September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteers from the Civilian Crisis Response Team help rescue three children from their flooded home September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
The roof of a house is seen affected by winds from Hurricane Florence as it hits the town of Wilson, North Carolina, U.S., September 14, 2018. REUTERS/Eduardo Munoz
Children sit and play games in a hotel lobby that has lost its power as Hurricane Florence comes ashore on Wilmington, North Carolina, U.S., September 14, 2018. REUTERS/Carlo Allegri
MYRTLE BEACH, SC - SEPTEMBER 14: A damaged awning is seen as winds from Hurricane Florence on September 14, 2018 in Myrtle Beach, United States. Hurricane Florence is hitting along the North Carolina and South Carolina coastline bringing high winds and rain. (Photo by Joe Raedle/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Rescue workers from Township No. 7 Fire Department and volunteers from the Civilian Crisis Response Team use a truck to move people rescued from their flooded homes during Hurricane Florence September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Rescue workers from Township No. 7 Fire Department and volunteers from the Civilian Crisis Response Team use a truck to move people rescued from their flooded homes during Hurricane Florence September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Volunteer Amber Hersel from the Civilian Crisis Response Team carries 7-year-old Keiyana Cromartie after she and her family were rescued from their flooded home during Hurricane Florence September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
JAMES CITY, NC - SEPTEMBER 14: Rescue workers from Township No. 7 Fire Department and volunteers from the Civilian Crisis Response Team use a boat to rescue a woman and her dog from their flooded home during Hurricane Florence September 14, 2018 in James City, United States. Hurricane Florence made landfall in North Carolina as a Category 1 storm and flooding from the heavy rain is forcing hundreds of people to call for emergency rescues in the area around New Bern, North Carolina, which sits at the confluence of the Nueces and Trent rivers. (Photo by Chip Somodevilla/Getty Images)
Rain water flooded streets are pictured as Hurricane Florence moves into the Carolinas in Wilmington, North Carolina, U.S., September 14, 2018. REUTERS/Roselle Chen
People walk in the rain water flooded streets as Hurricane Florence moves into the Carolinas in Wilmington, North Carolina, U.S., September 14, 2018. REUTERS/Roselle Chen
Palm trees blow in the wind as the outer bands of Hurricane Florence make landfall on September 14, 2018 in Myrtle Beach, South Carolina. - Florence smashed into the US East Coast Friday with howling winds, torrential rains and life-threatening storm surges as emergency crews scrambled to rescue hundreds of people stranded in their homes by flood waters. Forecasters warned of catastrophic flooding and other mayhem from the monster storm, which is only Category 1 but physically sprawling and dangerous. (Photo by Alex Edelman / AFP) (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
Mitchell Floor, left, holds a flashlight as Comfort Suites general manager Beth Bratz, center, and employee Dee Branch go to make coffee as Hurricane Florence rages in Wilmington, N.C. Thursday Sept. 14, 2018. The area lost power around 4 a.m. and the facility was running small lights, phone chargers and the coffee machine on a generator. (Chuck Liddy/Raleigh News & Observer/TNS via Getty Images)
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"Precautionary preparations for major inland flooding are advised," Kottlowski said.

"People should expect not only travel disruptions but also disruptions to daily activities related to work or school."

Image via AccuWeather

Moving the most valuable items out of the basement and first floor onto the second floor in flood-prone areas may be of interest at this time. Gathering important papers and irreplaceable photographs are also a good idea.

As the rain pours down during the storm, inland evacuations may become necessary and the time for completing such tasks will come to an end as travel becomes increasing difficult and dangerous.

Some low-lying roads that are not flooded at the onset of the storm may become flooded during the weekend and early next week.

Have a plan of action in place ahead of the flooding. Work-at-home plans may not be an option in some communities where the power goes out or flooding commences. Without a means of power, computer and cell phone batteries will drain.

RELATED: 
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Preparing for the costliest weather disaster in the US: How to stay safe before, during and after a flood 
What you should do if you get stuck driving in floodwaters 
Destructive Hurricane Florence to batter the Carolinas for days

Which areas are likely to be hit the hardest by inland flooding?

On Thursday, the first bands of rain directly associated with Florence will arrive on the Carolina and Virginia coasts. Rainfall will then spread inland and intensify on Friday and during the weekend.

Florence has the potential to cause a storm record rainfall in North Carolina and South Carolina.

"At this time, the most likely scenario is for 1-2 feet of rain with a AccuWeather Local StormMax™ of 40 inches centered on portions of the Carolinas from Florence," Kottlowski said.

Image via AccuWeather

This is due to the great risk of Florence stalling over or moving very slowly through the region.

AccuWeather Local StormMax™ is more hyper local than other sources, and AccuWeather is predicting higher rainfall amounts than other sources. If 40 inches of rain fall, it will be the heaviest amount of rain from a single storm in the lower 48 states since Hurricane Harvey last year.

The 24-hour flash flood threshold ranges from 1 inch in the Appalachians to near 6 inches along the Carolina coast. Rainfall is forecast to exceed that range by a substantial margin.

Enough rain to cause major flooding is likely in part of northern Georgia, eastern Tennessee and perhaps southern West Virginia, assuming the Florence continues to drift westward later this weekend into early next week.

A slight shift in the storm track even after landfall could bring rainfall of that magnitude into southern Virginia or farther south in Georgia.

There is a risk of flooding in part of the Northeast from Florence, but not until next week.

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