####018008197#### WTUS82 KCHS 282128 CCA HLSCHS GAZ101-116>119-137>141-SCZ045-047>052-290530- Tropical Storm Idalia Local Statement Advisory Number 9...CORRECTED National Weather Service Charleston SC AL102023 528 PM EDT Mon Aug 28 2023 This product covers southeast South Carolina and southeast Georgia **TROPICAL STORM WATCHES FOR PORTIONS OF SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - A Storm Surge Watch and Tropical Storm Watch have been issued for Beaufort, Charleston, Coastal Bryan, Coastal Chatham, Coastal Colleton, Coastal Jasper, Coastal Liberty, and Coastal McIntosh - A Tropical Storm Watch has been issued for Effingham, Inland Berkeley, Inland Bryan, Inland Chatham, Inland Jasper, Inland Liberty, Inland McIntosh, Long, and Tidal Berkeley * CURRENT WATCHES AND WARNINGS: - A Storm Surge Watch and Tropical Storm Watch are in effect for Beaufort, Charleston, Coastal Bryan, Coastal Chatham, Coastal Colleton, Coastal Jasper, Coastal Liberty, and Coastal McIntosh - A Tropical Storm Watch is in effect for Effingham, Inland Berkeley, Inland Bryan, Inland Chatham, Inland Jasper, Inland Liberty, Inland McIntosh, Long, and Tidal Berkeley * STORM INFORMATION: - About 850 miles south-southwest of Charleston SC or about 770 miles south-southwest of Savannah GA - 21.4N 85.1W - Storm Intensity 70 mph - Movement North or 360 degrees at 8 mph SITUATION OVERVIEW ------------------ Tropical Storm Idalia is expected to track into the southeast Gulf of Mexico while strengthening to Hurricane intensity this evening. Further strengthening is possible as Idalia moves north-northeastward toward the Florida Big Bend on Tuesday and Tuesday night, making landfall as a major Hurricane Wednesday morning. Idalia will then turn northeastward and accelerate across southeast Georgia and southeast South Carolina Wednesday afternoon through Wednesday night. Local impacts from Idalia will begin Wednesday morning as heavy rainfall begins to overspread southeast Georgia and southeast South Carolina from southwest to northeast. Heavy rainfall will then continue through Wednesday night across the region with 4 to 8 inches of rainfall forecast. Sustained tropical storm force winds of 40 to 50 mph will begin to be felt across the southeast Georgia coast on Wednesday morning with conditions deteriorating Wednesday afternoon where occasional hurricane force wind gusts are possible along the southeast Georgia coast. Sustained tropical storm force winds will develop along the southeast South Carolina coast Wednesday afternoon and persist through Wednesday night. Tornadoes will be possible across the area Wednesday afternoon and Wednesday night, particularly along the coast and waterspouts across the coastal waters. Finally, there is the potential for storm surge Wednesday afternoon through Wednesday night along the southeast Georgia and southeast South Carolina coasts, where inundation up to 4 feet above ground level is possible. POTENTIAL IMPACTS ----------------- * FLOODING RAIN: Prepare for life-threatening rainfall flooding having possible extensive impacts across southeast South Carolina and southeast Georgia. Potential impacts include: - Major rainfall flooding could prompt many rescues. - Rivers and tributaries could rapidly overflow their banks in multiple locations. Small streams, creeks, canals, ditches may become dangerous rivers. Flood control systems and barriers could become stressed. - Flood waters could enter many structures within multiple communities; some structures become uninhabitable or are washed away. Flood waters could cover multiple escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. - Drinking water and sewer services could be negatively impacted. - Hazardous containers and materials could possibly be present in flood waters. * SURGE: Prepare for life-threatening surge having possible significant impacts across coastal areas of southeast Georgia and southeast South Carolina. Potential impacts in these areas include: - Areas of inundation of saltwater along immediate shorelines and in low-lying spots farther inland near rivers and creeks, with storm surge flooding accentuated by waves. Damage to several buildings, mainly near the coast. - Sections of near-shore escape routes and secondary roads become weakened or washed out, especially in normally vulnerable low spots. - Moderate to major beach erosion with heavy surf breaching dunes. Strong and numerous rip currents. - Minor to moderate damage to marinas, docks, boardwalks, and piers. Several small craft broken away from moorings, especially in unprotected anchorages. Some navigation aids possibly displaced well off station, creating difficult navigation near inlets and waterways. Elsewhere across southeast South Carolina and southeast Georgia, little to no impact is anticipated. * WIND: Prepare for life-threatening wind having possible extensive impacts across southeast Georgia and southeast South Carolina, particularly along the coast. Potential impacts in these areas include: - Considerable roof damage to sturdy buildings, with some window, door, and garage door failures leading to structural damage. Mobile homes severely damaged, with some destroyed. Damage accentuated by airborne projectiles. Some locations may be uninhabitable for weeks. - Danger of death or injury from falling objects and airborne projectiles outside. - Large trees snapped or uprooted. - Some roads impassable from large debris, and more within urban or heavily wooded locations. Several bridges and access routes impassable. - Large areas with power and communications outages, which could persist for days. - Several secured small craft could break free from moorings. * TORNADOES: Prepare for a tornado event having possible limited impacts across southeast South Carolina and southeast Georgia. Potential impacts include: - Isolated tornadoes can hinder the execution of emergency plans. - Isolated locations could experience tornado damage, along with power and communications disruptions. - In isolated locations, tornadoes could damage trees, vehicles, boats and buildings, especially mobile homes and other poorly constructed structures. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: WATCH/WARNING PHASE - Listen to local official for recommended preparedness actions, including possible evacuation. If ordered to evacuate, do so immediately. * OTHER PREPAREDNESS INFORMATION: Now is the time to check your emergency plan and emergency supplies kit and take necessary actions to protect your family and secure your home or business. When making safety and preparedness decisions, do not focus on the exact forecast track since hazards such as flooding rain, damaging wind gusts, storm surge, and tornadoes extend well away from the center of the storm. * ADDITIONAL SOURCES OF INFORMATION: - For information on appropriate preparations see ready.gov - For information on creating an emergency plan see getagameplan.org - For additional disaster preparedness information see redcross.org NEXT UPDATE ----------- The next local statement will be issued by the National Weather Service in Charleston SC around 12 AM EDT, or sooner if conditions warrant. $$