WTUS82 KJAX 042136 HLSJAX FLZ021-023-024-030-031-033-035-038-120-124-125-132-133-136>138-140-220-225-232-236-237-240-322-325-340-422-425-522-GAZ132>136-149-151>154-162-163-165-166-250-264-350-364-050545- Tropical Storm Debby Local Statement Advisory Number 10 National Weather Service Jacksonville FL AL042024 536 PM EDT Sun Aug 4 2024 This product covers Northeast Florida and Southeast Georgia **DEBBY TO BRING MAJOR FLOOD THREAT TO SOUTHEAST GEORGIA AND MOST OF NORTHEAST FLORIDA** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - The Tropical Storm Warning has been upgraded to a Hurricane Warning for Suwannee and Western Hamilton - The Storm Surge Watch has been upgraded to a Storm Surge Warning and the Tropical Storm Watch has been upgraded to a Tropical Storm Warning for Coastal Camden and Coastal Glynn - The Tropical Storm Watch has been upgraded to a Tropical Storm Warning for Appling, Bacon, Baker, Bradford, Brantley, Central Marion, Coffee, Eastern Alachua, Eastern Marion, Inland Camden, Inland Glynn, Jeff Davis, Northeastern Charlton, Northern Ware, Pierce, Southern Ware, Union, Wayne, and Western Charlton - A Tropical Storm Warning has been issued for Coastal Duval, Coastal Nassau, Inland Nassau, South Central Duval, Trout River, and Western Duval * CURRENT WATCHES AND WARNINGS: - A Hurricane Warning is in effect for Suwannee and Western Hamilton - A Storm Surge Warning and Tropical Storm Warning are in effect for Coastal Camden and Coastal Glynn - A Tropical Storm Warning is in effect for Appling, Atkinson, Bacon, Baker, Bradford, Brantley, Central Marion, Clinch, Coastal Duval, Coastal Nassau, Coffee, Eastern Alachua, Eastern Hamilton, Eastern Marion, Echols, Gilchrist, Inland Camden, Inland Glynn, Inland Nassau, Jeff Davis, Northeastern Charlton, Northern Columbia, Northern Ware, Pierce, South Central Duval, Southeastern Columbia, Southern Ware, Southwestern Columbia, Trout River, Union, Wayne, Western Alachua, Western Charlton, Western Duval, and Western Marion * STORM INFORMATION: - About 260 miles southwest of Jacksonville FL or about 170 miles southwest of Ocala FL - 27.7N 84.4W - Storm Intensity 65 mph - Movement North or 360 degrees at 12 mph SITUATION OVERVIEW ------------------ Tropical Storm Debby will track northward through the Eastern Gulf of Mexico tonight, likely intensifying to a Hurricane as it makes landfall along the Florida Big Bend Monday morning, then slowly moving across the Suwannee River Valley of inland North Florida through the rest of the day Monday. Debby will weaken as it tracks slowly Northeast across Southeast Georgia Monday Night and is expected to push into the coastal Southeast Georgia Atlantic waters on Tuesday and may stall in this area briefly Tuesday Night. Rainbands with heavy rainfall and isolated tornadoes from Debby will continue to increase across the entire area from south to north tonight. These rainbands with heavy rainfall will continue across the entire area on Monday before lifting into mainly just Southeast Georgia on Tuesday. Excessive rainfall amounts of 6 to 12 inches across Northeast Florida and 10 to 20 inches across Southeast Georgia with local amounts up to 30 inches. This rainfall will likely result in areas of considerable flash and urban flooding, with significant river flooding expected. This potentially historic rainfall across portions of Southeast Georgia will likely result in areas of catastrophic flooding. In addition to heavy rainfall, storm surge inundation of 2 to 4 feet is expected along the southeast Georgia coast, with lesser surge values further south. Heavy coastal rainfall combined with surge will create significant flooding issues, especially in poor drainage areas of coastal communities. If Debby strengthens further prior to landfall, portions of Suwanee and Hamilton counties could experience strong tropical storm to hurricane force winds. Gusts to tropical storm force are expected in heavy rainbands across the rest of southeast Georgia and northeast Florida later tonight through Monday. Isolated tornadoes and waterspouts will be possible in any of the heavier rainbands through Monday. POTENTIAL IMPACTS ----------------- * FLOODING RAIN: Protect against life-threatening rainfall flooding having possible devastating impacts across all of Southeast Georgia and most of Northeast Florida. Potential impacts include: - Extreme rainfall flooding may prompt numerous evacuations and rescues. - Rivers and tributaries may overwhelmingly overflow their banks in many places with deep moving water. Small streams, creeks, canals, and ditches may become raging rivers. Flood control systems and barriers may become stressed. - Flood waters can enter numerous structures within multiple communities, some structures becoming uninhabitable or washed away. Numerous places where flood waters may cover escape routes. Streets and parking lots become rivers of raging water with underpasses submerged. Driving conditions become very dangerous. Numerous road and bridge closures with some weakened or washed out. * WIND: Protect against life-threatening wind having possible extensive impacts across all of Southeast Georgia and most of Northeast Florida. Potential impacts in this area include: - Considerable roof damage to sturdy buildings, with some having window, door, and garage door failures leading to structural damage. Mobile homes severely damaged, with some destroyed. Damage accentuated by airborne projectiles. Locations may be uninhabitable for weeks. - Many large trees snapped or uprooted along with fences and roadway signs blown over. - Some roads impassable from large debris, and more within urban or heavily wooded places. Several bridges, causeways, and access routes impassable. - Large areas with power and communications outages. * TORNADOES: Protect against a dangerous tornado event having possible significant impacts across southeast Georgia and northeast Florida. Potential impacts include: - The occurrence of scattered tornadoes can hinder the execution of emergency plans during tropical events. - Several places may experience tornado damage with a few spots of considerable damage, power loss, and communications failures. - 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. Dangerous projectiles can add to the toll. * SURGE: Protect against life-threatening surge having possible significant impacts across coastal southeast Georgia. 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. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: Follow the advice of local officials. * 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. 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. Rapidly rising flood waters are deadly. If you are in a flood-prone area, consider moving to higher ground. Never drive through a flooded roadway. Remember, turn around don't drown! If in a place that is vulnerable to high wind, such as near large trees, a manufactured home, upper floors of a high-rise building, or on a boat, consider moving to a safer shelter before the onset of strong winds or flooding. 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 Jacksonville FL around MIDNIGHT EDT, or sooner if conditions warrant. $$