Alabama 811 | Know What's Below.

Tropical Depression Four Develops Off of the Coast of South Carolina

| June 28, 2021 @ 9:53 am

SUMMARY OF 1100 AM EDT…1500 UTC…INFORMATION
LOCATION…31.9N 78.3W
ABOUT 145 MI…235 KM ESE OF BEAUFORT SOUTH CAROLINA
ABOUT 110 MI…180 KM ESE OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS…35 MPH…55 KM/H
PRESENT MOVEMENT…WNW OR 300 DEGREES AT 16 MPH…26 KM/H
MINIMUM CENTRAL PRESSURE…1013 MB…29.92 INCHES

SUMMARY OF WATCHES AND WARNINGS IN EFFECT
A Tropical Storm Warning is in effect for…
* Edisto Beach to South Santee River South Carolina

DISCUSSION AND OUTLOOK
At 1100 AM EDT (1500 UTC), the center of Tropical Depression Four was located near latitude 31.9 North, longitude 78.3 West. The depression is moving toward the west-northwest near 16 mph (26 km/h) and this general motion is expected to continue for the next couple of days. On the forecast track, the center of the tropical cyclone should make landfall along coast of South Carolina in the warning area later this evening.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some slight strengthening is expected today, and the depression is forecast to become a tropical storm before it makes landfall. Rapid
weakening is forecast after landfall occurs. The estimated minimum central pressure is 1013 MB (29.92 inches).

HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected to first reach the coast within the warning area by late this afternoon, making outside preparations difficult or dangerous.

RAINFALL: The depression could produce 1 to 3 inches of rainfall with locally higher amounts along the immediate coasts of Georgia and southern South Carolina. This region has been dry, limiting potential widespread flooding impacts, however, local flooding impacts, especially in urban areas along the southern South Carolina and Georgia coasts, cannot be ruled out at this time. Farther inland, 1 to 2 inches of rainfall is possible across Upstate South Carolina, the Piedmont of Georgia, and into northeastern Alabama.

STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide…

Port Royal Sound, SC to South Santee River, SC…1 to 3 ft

Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances.

Category: Alabama's Weather, ALL POSTS, Tropical

About the Author ()

Scott Martin is an operational meteorologist, professional graphic artist, musician, husband, and father. Not only is Scott a member of the National Weather Association, but he is also the Central Alabama Chapter of the NWA president. Scott is also the co-founder of Racecast Weather, which provides forecasts for many racing series across the USA. He also supplies forecasts for the BassMaster Elite Series events including the BassMaster Classic.

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