####018007142#### WTUS82 KMFL 292109 HLSMFL FLZ063-066>075-168-172>174-300515- Hurricane Idalia Local Statement Advisory Number 13 National Weather Service Miami FL AL102023 509 PM EDT Tue Aug 29 2023 This product covers South Florida **Hurricane Idalia Continues to Strengthen As It Moves North** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - The Storm Surge Watch has been cancelled for Coastal Collier County * CURRENT WATCHES AND WARNINGS: - A Tropical Storm Warning is in effect for Coastal Collier County - A Tropical Storm Watch is in effect for Inland Collier County * STORM INFORMATION: - About 290 miles west of Miami FL or about 190 miles west of Naples FL - 26.1N 84.8W - Storm Intensity 100 mph - Movement North or 360 degrees at 16 mph SITUATION OVERVIEW ------------------ Hurricane Idalia is moving northward through the southeastern Gulf of Mexico this afternoon. Idalia is forecast to continue strengthening as it moves north, and eventually northeast, across the eastern Gulf of Mexico through Wednesday. 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 upcoming full moon could lead to coastal flooding of 1 to 3 feet along coastal Collier and mainland Monroe Counties. 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 overspreading the region, particularly along the Gulf coast and adjacent coastal waters. A reasonable worst case scenario would have tropical storm force winds across Collier County between now and Wednesday. The remainder of South Florida could see winds gusts up to 35mph, with the highest gusts likely during the day on Wednesday. * Tornadoes - A low-end tornado threat is possible through Wednesday as bands from the system move ashore. POTENTIAL IMPACTS ----------------- * SURGE: Potential impacts from the main surge event are now unfolding across Coastal Collier County. Remain well away from locally hazardous surge having possible limited impacts. If realized, these impacts include: - Localized inundation with storm surge flooding mainly along immediate shorelines and in low-lying spots, or in areas farther inland near where higher surge waters move ashore. - Sections of near-shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road. - Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong rip currents. - Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings. Elsewhere across South Florida, little to no impact is anticipated. * WIND: Prepare for 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. * FLOODING RAIN: Potential impacts from the flooding rain are still unfolding across South Florida. Remain well guarded against locally hazardous flood waters having additional limited impacts. If realized, these impacts include: - Localized rainfall flooding may prompt a few evacuations. - Ditches and canals may quickly rise with swift currents. - Flood waters can enter a few structures, especially in usually vulnerable spots. A few places where rapid ponding of water occurs at underpasses, low-lying spots, and poor drainage areas. Several storm drains and retention ponds become near-full and begin to overflow. Some brief road and bridge closures. * TORNADOES: Prepare for 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. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * OTHER PREPAREDNESS INFORMATION: Now is the time to stay inside and away from windows. Listen for updates and be ready in case you lose electrical power. Keep a battery-powered radio, charged cell phone and flashlight handy. During the peak of the storm be ready to move quickly. Keep your shoes on and rain gear handy. Boots and athletic shoes offer the best foot protection if you become unexpectedly exposed to the weather. Keep your cell phone charged and in power-saving mode. If you lose power, use it sparingly and mainly for personal emergencies and check-ins. Do not be a thrill seeker or risk your life for senseless photos or videos. If you are prone to flooding or in an area under a storm surge watch or warning, be prepared for the possibility of a quick and dramatic rise in water levels. If a tornado warning is issued for your area, quickly move to the safest place within your shelter. Protect your head and body. * 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 11 PM EDT, or sooner if conditions warrant. $$