####018008262#### WTUS82 KMFL 290315 HLSMFL FLZ063-066>075-168-172>174-291115- Tropical Storm Idalia Local Statement Advisory Number 10 National Weather Service Miami FL AL102023 1115 PM EDT Mon Aug 28 2023 This product covers South Florida **Tropical Storm Idalia Continues to Strengthen** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - None * CURRENT WATCHES AND WARNINGS: - A Tropical Storm Warning and Storm Surge Watch are in effect for Coastal Collier County - A Tropical Storm Watch is in effect for Inland Collier County * STORM INFORMATION: - About 400 miles southwest of Miami FL or about 350 miles southwest of Naples FL - 22.0N 85.0W - Storm Intensity 70 mph - Movement North or 10 degrees at 8 mph SITUATION OVERVIEW ------------------ Tropical Storm Idalia continues to strengthen in the Yucatan Channel this evening. The storm is forecast to move into the southeast Gulf of Mexico overnight into Tuesday. Idalia is forecast to keep strengthening over the eastern Gulf as it moves closer to the west coast of Florida. The following are the primary hazards of concern with Idalia: * Coastal Flooding/Surge - Higher than usual tides due to the combination of surge from Idalia and the full moon could lead to coastal flooding of 2 to 4 feet in coastal Collier county and 1 to 3 feet along the coast of mainland Monroe County. Other vulnerable coastal areas of southern Florida could also experience minor coastal flooding, especially around the times of high tide. * Rainfall - The majority of the rainfall associated with the system is forecast to fall through Wednesday. The greatest risk for flash flooding will be near the Gulf coast. Storm total rain amounts of 2 to 3 inches with localized higher amounts. The highest amounts are anticipated along the Gulf coast. * Wind - Increasingly gusty winds are forecast Tuesday through Thursday, particularly along the Gulf coast and adjacent coastal waters. A reasonable worst case scenario would have tropical storm force winds across Collier County between Tuesday morning and Wednesday. Areas of the East Coast and Atlantic waters could also see gusty winds up to 35 mph during the same time frame. * Tornadoes - A low-end tornado threat is possible through early Thursday as banding from the system moves ashore. The focus for tornadic activity could be in the western half of southern Florida. POTENTIAL IMPACTS ----------------- * WIND: Protect against hazardous wind having possible limited impacts across Southwest Florida. Potential impacts in this area include: - Damage to porches, awnings, carports, sheds, and unanchored mobile homes. Unsecured lightweight objects blown about. - Many large tree limbs broken off. A few trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Some fences and roadway signs blown over. - A few roads impassable from debris, particularly within urban or heavily wooded places. Hazardous driving conditions on bridges and other elevated roadways. - Scattered power and communications outages. Elsewhere across South Florida, little to no impact is anticipated. * SURGE: Protect against life-threatening surge having possible significant impacts across coastal Collier County. Potential impacts in this area include: - Areas of inundation 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 usually vulnerable low spots. - Major beach erosion with heavy surf breaching dunes. Strong and numerous rip currents. - Moderate damage to marinas, docks, boardwalks, and piers. Several small craft broken away from moorings, especially in unprotected anchorages. Also, protect against locally hazardous surge having possible limited impacts across coastal portions of Mainland Monroe County. Elsewhere across South Florida, little to no impact is anticipated. * FLOODING RAIN: Protect against dangerous rainfall flooding having possible significant impacts across Southwest Florida. Potential impacts include: - Moderate rainfall flooding may prompt several evacuations and rescues. - Ditches and canals may quickly become swollen with swift currents and overspill their banks in a few places, especially in usually vulnerable spots. - Flood waters can enter some structures or weaken foundations. Several places may experience expanded areas of rapid inundation at underpasses, low-lying spots, and poor drainage areas. Some streets and parking lots take on moving water as storm drains and retention ponds overflow. Driving conditions become hazardous. Some road and bridge closures. Protect against locally hazardous rainfall flooding having possible limited impacts across the rest of South Florida. * TORNADOES: Protect against a tornado event having possible limited impacts across South Florida. Potential impacts include: - The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events. - A few places may experience tornado damage, along with power and communications disruptions. - Locations could realize roofs peeled off buildings, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow-rooted trees knocked over, moving vehicles blown off roads, and small boats pulled from moorings. Elsewhere across South Florida, little to no impact is anticipated. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: Listen to local official for recommended preparedness actions, including possible evacuation. If ordered to evacuate, do so immediately. For those not under evacuation orders, assess the risk from wind, falling trees, and flooding at your location. If you decide to move, relocate to a safer location nearby. If you do not relocate, help keep roadways open for those under evacuation orders. * OTHER PREPAREDNESS INFORMATION: Now is the time to complete all preparations to protect life and property in accordance with your emergency plan. Ensure you are in a safe location before the onset of strong winds or possible flooding. Keep cell phones well charged. Cell phone chargers for automobiles can be helpful, but be aware of your risk for deadly carbon monoxide poisoning if your car is left idling in a garage or other poorly ventilated area. If you are a visitor, be sure to know the name of the city or town in which you are staying and the name of the county or parish in which it resides. Listen for these locations in local news updates. Pay attention for instructions from local authorities. Storm surge is the leading killer associated with tropical storms and hurricanes! Make sure you are in a safe area away from the surge zone. Even if you are not in a surge-prone area, you could find yourself cutoff by flood waters during and after the storm. Heed evacuation orders issued by the local authorities. Closely monitor weather.gov, NOAA Weather radio or local news outlets for official storm information. Be ready to adapt to possible changes to the forecast. Ensure you have multiple ways to receive weather warnings. * 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 Miami FL around 5 AM EDT, or sooner if conditions warrant. $$