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Tropical Storm Isaias Public Advisory Number 22
2020-08-02 16:51:03| National Hurricane Center (Atlantic)
Issued at 1100 AM EDT Sun Aug 02 2020 000 WTNT34 KNHC 021450 TCPAT4 BULLETIN Tropical Storm Isaias Advisory Number 22 NWS National Hurricane Center Miami FL AL092020 1100 AM EDT Sun Aug 02 2020 ...HEAVY RAINFALL AND STRONG GUSTY WINDS CONTINUE OVER THE NORTHWESTERN BAHAMAS... ...TROPICAL STORM WARNING AND WATCH EXTENDED NORTHWARD ALONG THE U.S. EAST COAST... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...26.9N 79.6W ABOUT 55 MI...90 KM SE OF FORT PIERCE FLORIDA ABOUT 120 MI...195 KM SSE OF CAPE CANAVERAL FLORIDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NNW OR 340 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: A Tropical Storm Warning has been issued from South Santee River South Carolina to Surf City North Carolina. A Tropical Storm Watch has been issued for the North Carolina coast from north of Surf City to Duck, including Pamlico and Albemarle Sounds. The Tropical Storm Warning south of Jupiter Inlet Florida and for Lake Okeechobee has been discontinued. The Storm Surge Watch for the Florida east coast has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Watch is in effect for... * Edisto Beach South Carolina to Cape Fear North Carolina A Tropical Storm Warning is in effect for... * Jupiter Inlet Florida to Surf City North Carolina A Tropical Storm Watch is in effect for... * North of Surf City to Duck North Carolina * Pamlico and Albemarle Sounds Interests elsewhere along the mid-Atlantic coast of the United States should monitor the progress of Isaias. Additional watches or warnings may be required later today. 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 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. 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 1100 AM EDT (1500 UTC), the center of Tropical Storm Isaias was located by NOAA Doppler weather radars near latitude 26.9 North, longitude 79.6 West. Isaias is moving toward the north-northwest near 8 mph (13 km/h) and this general motion is expected to continue through Monday morning. A turn toward the north and north-northeast is anticipated on Monday and Tuesday with an increase in forward speed. On the forecast track, the center of Isaias will move near the east coast of Florida today through late tonight. On Monday and Tuesday, the center of Isaias will move from offshore the coast of Georgia into the mid-Atlantic states. Doppler radar data indicate that maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Some fluctuations in strength will be possible during the next 48 hours. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. During the past couple of hours, the NOAA C-MAN station at Settlement Point, Grand Bahama Island, measured a wind gust of 64 mph (103 km/h). A wind gust to 62 mph (100 km/h) was reported at Freeport, Grand Bahama Island. Along the east coast of Florida, tropical-storm-force wind gusts have been observed from Juno Beach northward to Port St. Lucie. The estimated minimum central pressure is 995 mb (29.39 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Isaias 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. 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... Edisto Beach SC to Cape Fear NC...2-4 ft Jupiter Inlet FL to Edisto Beach SC...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large 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 continue over portions of the Northwestern Bahamas for the next few hours. Tropical storm conditions are expected to spread northward along the coast of Florida within the warning area through tonight. These conditions will spread northward along the coasts of Georgia, South Carolina, and North Carolina within the warning area on Monday and Tuesday. Tropical storm conditions are possible in the watch area in North Carolina on Tuesday. RAINFALL: The following rainfall accumulations are expected along and near the track of Isaias: Northwest Bahamas: 4 to 8 inches, with isolated maximum totals of 12 inches. Eastern Florida: 2 to 4 inches, with isolated maximum totals of 6 inches. Northeast Florida and coastal Georgia: 1 to 3 inches. Carolinas and the mid Atlantic: 3 to 5 inches, with isolated maximum totals of 7 inches. Southeast New York and much of New England: 2 to 4 inches, with isolated maximum totals of 6 inches. Heavy rainfall from Isaias will continue to result in potentially life-threatening flash flooding in the Northwest Bahamas through tonight. Flash and urban flooding, some of which may be significant in the coastal Carolinas and Virginia, is expected through midweek along and near the path of Isaias across the East Coast of the United States. Widespread minor to isolated moderate river flooding is possible across portions of the Carolinas and Mid-Atlantic. SURF: Swells generated by Isaias are affecting portions of the Bahamas and the southeast coast of the United States and will spread northward along the U.S. east coast during the next few days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: The potential for a couple tornadoes will begin along coastal South Carolina during the late afternoon and evening on Monday, spreading across eastern North Carolina on Monday night. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM EDT. Next complete advisory at 500 PM EDT. $$ Forecaster Stewart
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