FIRST ALERT WEATHER DAY: Flash Flood Watch for Georgetown Co. starting at 2 p.m.

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CHARLESTON, SC (WCSC) –

The Live 5 Weather team declared Monday a First Alert Weather Day with impacts expected from a possible tropical cyclone off the Carolina coast.

The National Weather Service will issue a Flash Flood watch for Georgetown and Horry Counties from 2 p.m. Monday through Tuesday morning. Heavy rainfall will lead to ponding water or road closures. Up to three to six inches of rain is expected within most of the watch area with localized higher amounts possible.

Early Sunday, The National Hurricane Center issued a tropical storm watch from the South Santee River in South Carolina to Duck, North Carolina, an area that includes Georgetown and Horry Counties. The watch also includes Albemarle Sound and Pamlico Sound.

Georgetown County increased its status to OPCON 4 as of 8 a.m. Monday as it prepares for impacts from potential Tropical Cyclone Ten.

As of 8 a.m., the system was approximately 135 miles south-southwest of Charleston and 280 miles southwest of Wilmington, North Carolina. The maximum sustained winds were holding at 35 mph.

Live 5 Meteorologist Joey Sovine said upper-level winds have been shearing the system apart were continuing to do so Monday morning.

“We could get a minor tropical system,” Sovine said. “We are starting to see development.”

The system will become Tropical Storm Irma when maximum sustained winds reach a speed of 39 mph. He said the system could form into either Tropical Storm Irma or Subtropical Storm Irma by 11 a.m.

READ: ‘First Alert Weather Days’ give you notice of important weather changes

The system has begun to move northward and will accelerate Monday afternoon and Monday night.

The system is expected to produce total rain accumulations of three to six inches along the upper South Carolina, North Carolina, and southeast Virginia coasts, with possible isolated maximum amounts of nine inches. The heavier rains may result in some flooding concerns along coastal areas north of Charleston.

“We can expect windy conditions along the coast with high seas and dangerous rip currents,” Sovine said.

Tropical Storm Watches still in effect for Georgetown and Horry Counties. PTC 10 remains disorganized. #FirstAlertpic.twitter.com/LZfE4wCpNI

— Bill Walsh (@BILLWALSHTV) August 28, 2017

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within the next 24 to 48 hours.

Forecast track of PTC 10 (to be named Irma) takes it close to SC coast Monday w/hvy rain & gusty conditions. @LIVE5pic.twitter.com/HkJR5LfLm7

— Bill Walsh (@BILLWALSHTV) August 27, 2017

Rain chances will increase throughout Monday as the storm system moves northeast. The system is expected to produce total rain accumulations of three to six inches along the South Carolina, North Carolina, and southeast Virginia coasts, with possible isolated maximum amounts of nine inches, the National Hurricane Center said.

Formation chance through the next two days are high, with a 90 percent chance of formation, the National Hurricane Center said.

Click here to download the free Live 5 News and First Alert Weather apps to stay updated on severe weather developments.

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