####018007933#### WTUS82 KCHS 290942 HLSCHS GAZ100-101-114>119-137>141-SCZ045-047>052-291745- Hurricane Idalia Local Statement Advisory Number 11 National Weather Service Charleston SC AL102023 542 AM EDT Tue Aug 29 2023 This product covers southeast South Carolina and southeast Georgia **IDALIA IS EXPECTED TO BRING IMPACTS TO THE REGION WEDNESDAY THROUGH THURSDAY MORNING** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - None * 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 Bulloch, Effingham, Evans, Inland Berkeley, Inland Bryan, Inland Chatham, Inland Jasper, Inland Liberty, Inland McIntosh, Long, Tattnall, and Tidal Berkeley * STORM INFORMATION: - About 730 miles south-southwest of Charleston SC or about 700 miles south-southwest of Beaufort SC - 23.1N 85.0W - Storm Intensity 75 mph - Movement North or 360 degrees at 14 mph SITUATION OVERVIEW ------------------ Hurricane Idalia is forecast to track northward across the eastern Gulf of Mexico while strengthening through today and tonight. Idalia is forecast to make landfall as a major hurricane in the Big Bend region of Florida Wednesday morning. After making landfall, Idalia is expected to track over southeast Georgia and just inland of the southeast South Carolina coastline Wednesday evening through early Thursday morning. Local impacts from Idalia will begin as early as 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, with locally greater amounts possible. Tropical Storm force winds are expected to occur across the southeast Georgia on Wednesday morning with conditions deteriorating Wednesday afternoon and into Wednesday night as Tropical Storm force winds spread up the coast and into portions of southeast South Carolina. Tornadoes will be possible across the area Wednesday afternoon and Wednesday night, particularly along the coast, and waterspouts will be possible across the adjacent Atlantic coastal waters. Finally, there is the potential for storm surge Wednesday evening through early Thursday morning 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 this area 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. * WIND: Prepare for life-threatening wind having possible extensive impacts across southeast Georgia and southeast South Carolina, especially along and near the coast. Potential impacts in this area 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 dangerous tornado event having possible significant impacts across portions of southeast Georgia and southeast South Carolina. Potential impacts include: - Isolated to scattered tornadoes can hinder the execution of emergency plans. - Scattered locations could experience enhanced damage due to tornadoes with a few spots of considerable damage, power loss, and communications failures. - Scattered locations could realize roofs torn off frame houses, mobile homes demolished, boxcars overturned, large trees snapped or uprooted, vehicles tumbled, and small boats tossed about. * OTHER COASTAL HAZARDS: Prepare for additional coastal hazards along the entire southeast Georgia and southeast South Carolina coastline including dangerous rip currents, high surf, and beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: 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 11 AM EDT, or sooner if conditions warrant. $$