The areas affected include. Biscayne Bay. Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM. Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM. Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM excluding the territorial waters of Bahamas. Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM. At 542 AM EDT, Doppler radar indicated showers, capable of producing winds to around 30 knots. These showers were located along a line extending from near Highland Beach to 15 nm east of Ocean Ridge to 58 nm east of Sunny Isles, moving west at 10 knots.

HLSMFL This product covers South Florida **Tropical Storm and Storm Surge Watches for Southwest Florida** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - None * CURRENT WATCHES AND WARNINGS: - A Storm Surge Watch and Tropical Storm Watch are in effect for Coastal Collier County and Mainland Monroe * STORM INFORMATION: - About 510 miles south-southwest of Miami FL or about 500 miles south of Naples FL - 18.9N 83.0W - Storm Intensity 35 mph - Movement Northwest or 315 degrees at 8 mph SITUATION OVERVIEW ------------------ Potential Tropical Cyclone Nine is forecast to develop in the northwestern Caribbean Sea south of Cuba and strengthen as it moves into the southeastern Gulf of Mexico. The following are the primary hazards of concern with Potential Tropical Cyclone Nine: * Coastal Flooding/Surge - Higher than usual tides due to the combination of surge from Nine and the recent full moon could lead to coastal flooding of 2 to 4 ft later this week over portions of Coastal Collier and Monroe Counties, with the highest tides expected on Thursday. 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 Wednesday through Friday. Rainfall will range between 2 to 4 inches across most of the area. Locally higher amounts of 5+ inches are possible and will depend on how this system tracks and evolves through the week. A Flood Watch may become necessary for portions of southern Florida. * Wind - The highest probabilities for sustained tropical storm force winds will be along the Gulf coast of Southwest Florida, including Collier and mainland Monroe Counties, and adjacent Gulf waters. All of South Florida could see strong winds gusts with squalls Wednesday through Friday. POTENTIAL IMPACTS ----------------- * SURGE: Prepare for life-threatening surge having possible significant impacts across coastal Southwest Florida. 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. Elsewhere across South Florida, little to no impact is anticipated. * FLOODING RAIN: Prepare for 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. Prepare for locally hazardous rainfall flooding having possible limited impacts across Southeast Florida. * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * 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. Closely monitor weather.gov, NOAA Weather Radio and local news outlets for official storm information. Listen for possible changes to the forecast. * 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 12 PM EDT, or sooner if conditions warrant.

ESFMFL The National Hurricane Center is forecasting Potential Tropical Cyclone Nine to move northward from the Caribbean Sea into the eastern Gulf of Mexico during the middle to latter half of this week. This will bring deep tropical moisture across South Florida with PWAT values reaching the 2.3 to 2.5 inch range. The aforementioned PWAT values will be near the maximum climatological values for this time of year supporting the potential of heavy rainfall, especially across urban areas. Potential rainfall amounts between Tuesday night through Saturday morning looks to be between 2 to 4 inches over inland areas with 3 to 5 inches over the metro areas of South Florida with locally higher amounts possible where a duration of heavy rain continues for a prolonged duration. There is still some uncertainty regarding the forecast over the next couple of days. Users are reminded that shifts in track of the system may vary potential rainfall totals as uncertainty still remains. A Flood Watch may be issued if confidence and potential rainfall amounts increase. Interests in South Florida should stay tuned to the latest forecasts from NWS Miami and the National Hurricane Center.