Weather Data Source: South Carolina Weather

Tropical Storm Imelda Brings Rainfall Concerns to Charleston, SC

Gathering storm clouds over Charleston SC coastline

Charleston SC, September 29, 2025

News Summary

Tropical Storm Imelda has formed offshore, with maximum sustained winds nearing 40 mph. Forecasts predict significant rainfall in Charleston, with potential flooding. Emergency preparations are in place as local authorities warn residents to be vigilant and ready for flooding impacts caused by the storm. Rainfall could total between 2 to 4 inches, and localized amounts may reach up to 6 inches.

Charleston, South Carolina — Tropical Storm Imelda formed on September 28, 2025, west-northwest of the Central Bahamas, and is forecasted to remain several hundred miles offshore, minimizing its impact on South Carolina’s coastal regions. Although the storm’s maximum sustained winds have increased to near 40 mph with higher gusts, the most immediate concern for residents in Charleston and nearby areas involves significant rainfall and potential flooding.

Weather forecasts indicate that from September 29 to September 30, the tri-county area could expect between 2 to 4 inches of rain, with localized amounts potentially reaching 6 inches. With the ground already saturated, meteorologists have raised alarms about localized flooding and the possibility of flash floods, particularly in and around the Charleston area. The National Weather Service (NWS) forecasts the greatest threat for flash flooding during this period.

The state of emergency announced by Governor Henry McMaster on September 26, due to anticipated severe weather impacts, has prompted emergency operations to be activated. The City of Charleston has proactively cleared storm drains, deployed temporary pumps, and staged barricades on known flood-prone streets. Additionally, officials advise residents to prepare emergency kits and remain familiar with local evacuation zones.

As Tropical Storm Imelda continues its path, it is being influenced by Hurricane Humberto, currently a Category 4 storm, which is expected to help steer Imelda further away from the coastline. While the situation appears to be improving in terms of wind and storm impacts, meteorologists remain cautious due to the forecast of dangerous surf conditions along all Charleston-area beaches and marine areas throughout the week.

Minor to moderate coastal flooding is predicted to affect the Charleston and Colleton county coastlines, beginning September 30 and lasting throughout the week. The combination of heavy coastal rain and high astronomical tides around October 6 raises additional concerns regarding flooding.

In response to evolving weather conditions, policies and resources are in place for swift water rescues and the readiness of high-water vehicles. Emergency planners, including Georgetown County officials who have elevated their state to OPCON 2, are emphasizing the importance of being prepared for any potential hazards.

In summary, while the revised forecasts have lessened immediate concerns regarding severe impacts from Imelda, it remains crucial for residents in affected areas to remain vigilant and prepared for potential flooding and rains as the storm passes.

Key Forecast Details

  • Storm Formation: September 28, 2025
  • Maximum Winds: Near 40 mph
  • Expected Rainfall: 2 to 4 inches, isolated amounts up to 6 inches
  • Coastal Flooding: Minor to moderate predicted
  • Storm Preparedness: Emergency kits and evacuation awareness advised

Timeline of Key Events

  • September 26: State of Emergency issued by Governor McMaster
  • September 28: Formation of Tropical Storm Imelda
  • September 29-30: Anticipated rainfall and flooding

Future Considerations

The effects of Imelda interacting with high tides in early October will require ongoing monitoring, ensuring that local authorities and residents are prepared for unforeseen developments.

FAQ Section

What is Tropical Storm Imelda?

Tropical Storm Imelda formed on September 28, 2025, west-northwest of the Central Bahamas.

Imelda is a tropical storm with maximum sustained winds near 40 mph

What impacts are expected in Charleston, SC?

Forecasts predict 2 to 4 inches of rainfall in the tri-county area from September 29 to September 30.

Localized flooding and flash floods are possible, particularly in the Charleston area.

What emergency preparations are being made?

City of Charleston has cleared storm drains, deployed temporary pumps, and staged barricades on flood-prone streets.

Emergency operations plans have been activated, and residents are advised to prepare emergency kits.

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Key Features of Tropical Storm Imelda

Feature Details
Formation Date September 28, 2025
Max Sustained Winds Near 40 mph
Expected Rainfall 2 to 4 inches, isolated amounts up to 6 inches
Coastal Flooding Minor to moderate predicted
Emergency Status State of Emergency issued

Deeper Dive: News & Info About This Topic

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Additional Resources

Tropical Storm Imelda Brings Rainfall Concerns to Charleston, SC

STAFF HERE CHARLESTON
Author: STAFF HERE CHARLESTON

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