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Tropical Storm Eta Public Advisory Number 34A
2020-11-09 00:50:25| National Hurricane Center (Atlantic)
Issued at 700 PM EST Sun Nov 08 2020 000 WTNT34 KNHC 082350 TCPAT4 BULLETIN Tropical Storm Eta Intermediate Advisory Number 34A NWS National Hurricane Center Miami FL AL292020 700 PM EST Sun Nov 08 2020 ...TROPICAL-STORM-FORCE WINDS, A DANGEROUS STORM SURGE, AND HEAVY RAINFALL AND FLASH FLOODING SPREADING OVER SOUTH FLORIDA AND THE KEYS... SUMMARY OF 700 PM EST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...24.5N 80.1W ABOUT 65 MI...105 KM E OF MARATHON FLORIDA ABOUT 90 MI...145 KM S OF MIAMI FLORIDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Florida Keys from Ocean Reef to the Dry Tortugas, including Florida Bay A Storm Surge Watch is in effect for... * Florida coast from Bonita Beach to Card Sound Bridge A Hurricane Warning is in effect for... * Florida Keys from Ocean Reef to the Dry Tortugas, including Florida Bay A Hurricane Watch is in effect for... * Florida coast from Golden Beach to Bonita Beach A Tropical Storm Warning is in effect for... * Northwestern Bahamas, including the Abacos, Andros Island, Berry Islands, Bimini, Eleuthera, Grand Bahama Island, and New Providence * Florida coast from Brevard/Volusia County line to Englewood * Lake Okeechobee A Tropical Storm Watch is in effect for... * The Cuban provinces of La Habana, Artemisa, Mayabeque, Pinar del Rio, and the Isle of Youth * Florida coast from north of Englewood to Anna Maria Island A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours 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 Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. 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 during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within the next 24 hours. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, generally within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in the Florida peninsula should monitor the progress of Eta. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 PM EST (0000 UTC), the center of Tropical Storm Eta was located by National Weather Service Doppler radar near latitude 24.5 North, longitude 80.1 West. Eta is moving toward the northwest near 14 mph (22 km/h). This general motion is expected to continue during the next few hours, followed by a turn toward the west later tonight. A slower west-southwestward motion is forecast Monday night and Tuesday. On the forecast track, the center of Eta will pass near or over the Florida Keys tonight and early Monday, and be over the southeastern Gulf of Mexico late Monday and Tuesday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Some strengthening is forecast during the next day or so and Eta is forecast to become a hurricane as it moves near or over the Florida Keys tonight and early Monday. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. Sustained tropical-storm-force winds have been reported along much of the southeast Florida coast during the past few hours. A National Ocean Service station on Virginia Key recently reported sustained winds of 36 mph (58 km/h) with a gust to 45 mph (72 km/h). A WeatherFlow station at Morningside Park just north of downtown Miami recently reported sustained winds of 40 mph (65 km/h) and a gust to 51 mph (82 km/h). An elevated site at Port Everglades reported a 50 mph (80 km/h) sustained wind and a 65 mph (105 km/h) gust within the past hour or so. Farther north, a WeatherFlow site near Juno Beach reported a wind gust of 49 mph (79 km/h). The estimated minimum central pressure is 993 mb (29.33 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Eta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml. RAINFALL: Eta is expected to produce the following rainfall amounts through Friday morning: Jamaica: An additional 1 to 3 inches (25 to 75 mm), isolated maximum storm totals of 15 inches (380 mm). Portions of Cuba: an additional 2 to 5 inches (50 to 125 mm), isolated maximum storm totals of 25 inches (635 mm). The Bahamas: an additional 4 to 8 inches (100 to 200 mm), isolated maximum storm totals of 15 inches (380 mm). Portions of the central and southern Florida peninsula, including the Keys: storm totals of 6 to 12 inches (150 to 300 mm), isolated maximum storm totals of 18 inches (450 mm). Significant, life-threatening flash and river flooding will be possible in Cuba, along with landslides in areas of higher terrain. Significant flash and urban flooding will also be possible for Jamaica, the Bahamas, and Southern Florida. Minor river flooding is also possible for Central Florida. STORM SURGE: The combination of a dangerous 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... Bonita Beach, FL to Card Sound Bridge...2-4 ft Florida Keys from Ocean Reef to the Dry Tortugas including Florida Bay...2-4 ft Card Sound Bridge to Golden Beach, FL including Biscayne Bay...2-3 ft Golden Beach, FL to Altamaha Sound, GA...1-2 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. 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. WIND: Tropical storm conditions will spread across the Florida Keys tonight with hurricane conditions expected in a portion of the Florida Keys by early Monday morning. Tropical storm conditions are expected to continue in the warning areas in the northwestern Bahamas and the Florida peninsula through early Monday. Hurricane conditions are possible in the hurricane watch area in Florida tonight and early Monday. Tropical storm conditions are possible in the Tropical Storm Watch area in Florida by Monday. TORNADOES: A few tornadoes are possible this evening through Monday over south Florida and the Keys. SURF: Swells generated by Eta are expected to affect the north coast of Cuba, the northwestern Bahamas, southern Florida and the Florida Keys during the next couple of days. Swells will gradually subside along the south coast of Cuba, the Cayman Islands and Jamaica later today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1000 PM EST. $$ Forecaster Brown
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