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Tropical Storm Elsa Public Advisory Number 29A
2021-07-07 13:56:56| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Wed Jul 07 2021 000 WTNT35 KNHC 071156 TCPAT5 BULLETIN Tropical Storm Elsa Intermediate Advisory Number 29A NWS National Hurricane Center Miami FL AL052021 800 AM EDT Wed Jul 07 2021 ...ELSA APPROACHING THE NORTHERN FLORIDA GULF COAST... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...29.2N 83.6W ABOUT 35 MI...55 KM W OF CEDAR KEY FLORIDA ABOUT 115 MI...185 KM NW OF TAMPA FLORIDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm and Storm Surge Warnings have been discontinued south of the Middle of Longboat Key. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * West coast of Florida from the Middle of Longboat Key to the Aucilla River, including Tampa Bay A Hurricane Warning is in effect for... * West coast of Florida from Chassahowitzka to the Steinhatchee River A Tropical Storm Warning is in effect for... * West coast of Florida from south of Chassahowitzka to the Middle of Longboat Key * West coast of Florida north of the Steinhatchee River to Ochlockonee River * Mouth of St. Marys River, Georgia to Little River Inlet, South Carolina A Storm Surge Watch is in effect for... * West of the Aucilla River to the Ochlockonee River, Florida A Tropical Storm Watch is in effect for... * North of Little River Inlet, South Carolina to Chincoteague, Virginia * Pamlico and Albemarle Sounds A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Carolinas, the mid-Atlantic coast, southeastern New England, and the Canadian Maritimes should monitor the progress of Elsa. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Storm Elsa was located by an Air Force Hurricane Hunter aircraft and NWS Doppler radars near latitude 29.2 North, longitude 83.6 West. Elsa is moving toward the north near 14 mph (22 km/h), and a general northward motion is expected to continue through this afternoon. A turn toward the north-northeast is expected late this afternoon or tonight, followed by a faster northeastward motion by late Thursday. On the forecast track, Elsa will make landfall along the north Florida Gulf coast by late this morning or this afternoon. The storm should then move across the southeastern and mid-Atlantic United States through Thursday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Little change in strength is likely until landfall later today. Weakening will begin after Elsa moves inland later today. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center. A C-MAN station at Cedar Key, Florida, recently measured a sustained wind of 41 mph (66 km/h) gusting to 51 mph (66 km/h). The minimum central pressure estimated from Air Force Hurricane Hunter observations is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Elsa can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC and on the web at www.hurricanes.gov/graphics_at5.shtml?key_messages. WIND: Hurricane conditions could still occur in the hurricane warning area this morning. Tropical storm conditions will continue along the Gulf coast of Florida in the warning area today. Tropical storm conditions are expected in the Tropical Storm Warning area along the Georgia coast by late today or tonight and along the South Carolina coast tonight and early Thursday. Tropical storm conditions are possible in the watch area in the mid-Atlantic states by Thursday night and Friday. STORM SURGE: The combination of a storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Anclote River to Aucilla River...3 to 5 ft Middle of Longboat Key, FL to Anclote River including Tampa Bay...2 to 4 ft Bonita Beach, FL to Middle of Longboat Key, FL including Charlotte Harbor...1 to 3 ft Aucilla River to Ochlockonee River...2 to 4 ft Ochlockonee River to Indian Pass...1 to 2 ft Mouth of St. Marys River to South Santee River, SC...1 to 2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Elsa is expected to produce the following rainfall amounts and impacts the rest of this week: Across western and northern portions of the Florida Peninsula...3 to 6 inches with localized maximum storm totals up to 9 inches today, which may result in considerable flash and urban flooding, along with minor to isolated moderate river flooding. Across portions of southeast Georgia and the Lowcountry of South Carolina, 2 to 4 inches with isolated maximum totals up to 6 inches will be possible, which may result in considerable flash and urban flooding. Across coastal portions of North Carolina into southeastern Virginia...1 to 3 inches with isolated totals up to 5 inches tonight through Thursday night, which could lead to isolated flash and urban flooding. Across the Northeast and New England, 1 to 3 inches with isolated totals up to 5 inches Thursday into Friday will be possible. This could lead to isolated flash and urban flooding. TORNADOES: A few tornadoes remain possible across west-central to north Florida into this afternoon. The tornado threat will continue later today through tonight across southeast Georgia and eastern South Carolina. The tornado threat should shift to the eastern Carolinas and far southeast Virginia on Thursday. SURF: Swells will spread northward across portions of the west coast of Florida through today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office for more details. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Pasch/Papin/Brown
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