WTUS82 KJAX 060331 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>154-162-163-165-166-250-264-350-364-061245- Tropical Storm Debby Local Statement Advisory Number 15 National Weather Service Jacksonville FL AL042024 1131 PM EDT Mon Aug 5 2024 This product covers Northeast Florida and Southeast Georgia **SLOW-MOVING DEBBY BRINGING TORRENTIAL RAINS TO PORTIONS OF THE SOUTHEASTERN UNITED STATES** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - The Tropical Storm Warning has been cancelled for Bradford, Central Marion, Coastal St. Johns, Eastern Alachua, Eastern Clay, Eastern Marion, Eastern Putnam, Gilchrist, Inland St. Johns, Union, Western Alachua, Western Clay, Western Marion, and Western Putnam * CURRENT WATCHES AND WARNINGS: - 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, Brantley, Clinch, Coastal Duval, Coastal Nassau, Coffee, Eastern Hamilton, Echols, Inland Camden, Inland Glynn, Inland Nassau, Jeff Davis, Northeastern Charlton, Northern Columbia, Northern Ware, Pierce, South Central Duval, Southeastern Columbia, Southern Ware, Southwestern Columbia, Suwannee, Trout River, Wayne, Western Charlton, Western Duval, and Western Hamilton * STORM INFORMATION: - About 60 miles northwest of Jacksonville FL or about 40 miles west of Brunswick GA - 31.1N 82.1W - Storm Intensity 45 mph - Movement Northeast or 50 degrees at 7 mph SITUATION OVERVIEW ------------------ Tropical Storm Debby will continue to move slowly northeast across southeast Georgia through Tuesday, then east or northeastward into the western Atlantic during the day on Tuesday. Additional rainfall amounts of 4 to 8inches are possible across southeast Georgia with locally higher amounts up to 12 inches. Additional rainfall amounts of less than 2 inches are possible across northeast Florida, generally north of the Interstate 10 corridor. The extreme threat of flash flooding will continue through Tuesday as many local rivers rise into moderate and major flood stage. Outer rainbands with heavy rainfall, strong wind gusts and isolated tornadoes will continue to move across coastal southeast Georgia and the Altamaha River Basin through Tuesday. The higher gusts will occur in squalls of heavy rainfall, over lakes, rivers, open pastures and along the coast. Storm surge inundation of 2 to 4 feet is expected along the southeast Georgia coast, with up to 2 feet of storm surge along the northeast Florida coast and the St. Johns River basin near downtown Jacksonville. Heavy coastal rainfall combined with surge will create significant flooding issues, especially in poor drainage areas of coastal communities including Brunswick. POTENTIAL IMPACTS ----------------- * FLOODING RAIN: Protect against life-threatening rainfall flooding having possible devastating impacts across southeast Georgia. 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: Potential impacts will mainly focus across southeast Georgia through Tuesday morning. Remain well sheltered from dangerous wind having additional significant impacts. If realized, these impacts include: - Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles. - Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Several fences and roadway signs blown over. - Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable. - Scattered power and communications outages, but more prevalent in areas with above ground lines. * SURGE: Potential impacts from the main surge event are now unfolding across coastal southeast Georgia. Remain well away from life-threatening surge having possible significant impacts. - 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 Northeast Florida and Southeast Georgia, little to no impact is anticipated. * TORNADOES: Protect against a dangerous tornado event having possible significant impacts across coastal southeast Georgia. 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. Elsewhere across Northeast Florida and Southeast Georgia, little to no impact is anticipated. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: Follow the advice of local officials. * OTHER PREPAREDNESS INFORMATION: 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! 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 6 AM EDT, or sooner if conditions warrant. $$