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Hurricane Isaias Update Statement
2020-08-04 02:58:03| National Hurricane Center (Atlantic)
Issued at 900 PM EDT Mon Aug 3 2020 000 WTNT64 KNHC 040057 TCUAT4 Hurricane Isaias Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092020 900 PM EDT Mon Aug 3 2020 Data from an Air Force Reserve Hurricane Hunter aircraft and NOAA Doppler radars indicate that the maximum sustained winds associated with Hurricane Isaias have increased to 85 mph (135 km/h) with higher gusts. The minimum pressure measured by the plane was 988 mb (29.18 inches). NOAA buoy 41004 recent reported sustained wind of 67 mph (108 km/h) and a gust to 78 mph (126 km/h) in the southwest eyewall of Isaias. SUMMARY OF 900 PM EDT...0100 UTC...INFORMATION ----------------------------------------------- LOCATION...33.1N 78.8W ABOUT 55 MI...90 KM SSE OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...85 MPH...135 KM/H PRESENT MOVEMENT...NNE OR 15 DEGREES AT 18 MPH...29 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES $$ Forecaster Zelinsky/Beven
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Summary for Hurricane Isaias (AT4/AL092020)
2020-08-04 02:01:02| National Hurricane Center (Atlantic)
...ISAIAS REGAINS HURRICANE STRENGTH AND IS EXPECTED TO MAKE LANDFALL TONIGHT WITH DANGEROUS WINDS AND STORM SURGE... ...STRONG WINDS AND HEAVY RAINFALL LIKELY FROM THE EASTERN CAROLINAS TO THE MID-ATLANTIC COAST TONIGHT AND TUESDAY... As of 8:00 PM EDT Mon Aug 3 the center of Isaias was located near 32.8, -79.0 with movement NNE at 16 mph. The minimum central pressure was 988 mb with maximum sustained winds of about 75 mph.
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Hurricane Isaias Public Advisory Number 27A
2020-08-04 02:01:02| National Hurricane Center (Atlantic)
Issued at 800 PM EDT Mon Aug 03 2020 000 WTNT34 KNHC 040000 CCA TCPAT4 BULLETIN Hurricane Isaias Intermediate Advisory Number 27A...Corrected NWS National Hurricane Center Miami FL AL092020 800 PM EDT Mon Aug 03 2020 Corrected to add extent of hurricane-force winds and surface ob ...ISAIAS REGAINS HURRICANE STRENGTH AND IS EXPECTED TO MAKE LANDFALL TONIGHT WITH DANGEROUS WINDS AND STORM SURGE... ...STRONG WINDS AND HEAVY RAINFALL LIKELY FROM THE EASTERN CAROLINAS TO THE MID-ATLANTIC COAST TONIGHT AND TUESDAY... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...32.8N 79.0W ABOUT 60 MI...100 KM E OF CHARLESTON SOUTH CAROLINA ABOUT 60 MI...100 KM S OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...NNE OR 15 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning south of Edisto Beach has been discontinued. The Storm Surge Warning south of Folly Beach has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Folly Beach South Carolina to Cape Fear North Carolina * Pamlico and Albemarle Sounds, including the Neuse and Pamlico Rivers * Oregon Inlet North Carolina to the North Carolina/Virginia border A Storm Surge Watch is in effect for... * Cape Fear to Oregon Inlet North Carolina A Hurricane Warning is in effect for... * South Santee River South Carolina to Surf City North Carolina A Tropical Storm Warning is in effect for... * Edisto Beach South Carolina to South Santee River South Carolina * North of Surf City North Carolina to Stonington Maine * Pamlico and Albemarle Sounds * Chesapeake Bay * Tidal Potomac River * Delaware Bay * Long Island and Long Island Sound * Martha's Vineyard, Nantucket, and Block Island A Tropical Storm Watch is in effect for... * North of Stonington to Eastport Maine 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 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 Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. 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, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 800 PM EDT (0000 UTC), the center of Hurricane Isaias was located by NOAA Doppler weather radars and an Air Force Reserve Hurricane Hunter aircraft near latitude 32.8 North, longitude 79.0 West. Isaias is moving toward the north-northeast near 16 mph (26 km/h), and this general motion accompanied by a gradual increase in forward speed is expected through tonight followed by a further increase in the forward speed on Tuesday. On the forecast track, the center of Isaias will approach the coasts of northeastern South Carolina and southern North Carolina within the hurricane warning area during the next few hours. The center will then move inland across eastern North Carolina early Tuesday morning, move along the coast of the mid-Atlantic states on Tuesday, and continue across the northeastern United States Tuesday night. Data from NOAA Doppler weather radars and the Hurricane Hunter aircraft indicate that maximum sustained winds have increased to ear 75 mph (120 km/h) with higher gusts. Some additional strengthening is possible before landfall. After landfall, only gradual weakening is anticipated after Isaias makes landfall in the Carolinas and moves across the U.S. mid-Atlantic region tonight and Tuesday. Hurricane-force winds extend outward up to 25 miles (40 km) from the center, while tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. NOAA buoy 41004 recently reported sustained winds of 60 mph (96 km/h), and a Weatherflow station at Winyah Bay, South Carolina recently reported sustained winds of 61 mph (98 km/h) and a wind gust of 69 mph (111 km/h). The minimum central pressure based on aircraft and buoy data is 988 mb (29.18 inches). NOAA buoy 41004 recently reported a minimum pressure of 988.9 mb (29.20 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... South Santee River SC to Cape Fear NC...3-5 ft Folly Beach SC to South Santee River SC...2-4 ft Cape Fear NC to the North Carolina/Virginia border including Pamlico Sound, Albemarle Sound, Neuse and Pamlico Rivers...2-4 ft Savannah River to Folly Beach SC...1-3 ft North of the North Carolina/Virginia border to Martha's Vineyard including the Chesapeake Bay, the Tidal Potomac River, Delaware Bay, Long Island Sound, Block Island Sound, Narragansett Bay, Buzzards Bay, and Vineyard Sound...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: Hurricane conditions are expected within the hurricane warning area in South and North Carolina this evening and tonight, with tropical storm conditions spreading onshore in the next few hours. Widespread tropical-storm conditions are expected in the tropical storm warning area from coastal North Carolina to the mid-Atlantic states, including portions of the Chesapeake Bay region, tonight and Tuesday, with wind gusts to hurricane force possible. These winds could cause tree damage and power outages. Tropical storm conditions are expected to reach southern New England Tuesday afternoon and northern New England Tuesday night and early Wednesday. RAINFALL: The following rainfall accumulations are expected along and near the track of Isaias: Carolinas and the Mid-Atlantic: 3 to 6 inches, isolated maximum totals 8 inches. Eastern New York and western New England from Connecticut to New Hampshire: 2 to 4 inches, isolated maximum totals 6 inches. Western and northern Maine: 1 to 3 inches. Heavy rainfall along the East Coast, near the path of Isaias, will result in flash and urban flooding, some of which may be significant in the eastern Carolinas, Mid-Atlantic and Northeast through Wednesday. Widespread minor to moderate river flooding is possible across portions of the Carolinas and the Mid-Atlantic. Quick-responding rivers in Northeast will also be susceptible to minor river flooding. TORNADOES: A few tornadoes will be possible near northeastern South Carolina coastal areas by early this evening, before spreading across eastern North Carolina tonight into Tuesday morning. A couple of tornadoes will be possible on Tuesday from eastern Virginia northeastward into southern New England. 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 couple of days. 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 1100 PM EDT. $$ Forecaster Beven
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Summary for Hurricane Isaias (AT4/AL092020)
2020-08-01 19:40:45| National Hurricane Center (Atlantic)
...ISAIAS EMERGING OVER THE STRAITS OF FLORIDA... ...EXPECTED TO APPROACH THE SOUTHEAST COAST OF FLORIDA TONIGHT... As of 2:00 PM EDT Sat Aug 1 the center of Isaias was located near 24.9, -78.4 with movement NW at 12 mph. The minimum central pressure was 990 mb with maximum sustained winds of about 75 mph.
Hurricane Isaias Public Advisory Number 18A
2020-08-01 19:40:45| National Hurricane Center (Atlantic)
Issued at 200 PM EDT Sat Aug 01 2020 000 WTNT34 KNHC 011740 TCPAT4 BULLETIN Hurricane Isaias Intermediate Advisory Number 18A NWS National Hurricane Center Miami FL AL092020 200 PM EDT Sat Aug 01 2020 ...ISAIAS EMERGING OVER THE STRAITS OF FLORIDA... ...EXPECTED TO APPROACH THE SOUTHEAST COAST OF FLORIDA TONIGHT... SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...24.9N 78.4W ABOUT 115 MI...185 KM S OF FREEPORT GRAND BAHAMA ISLAND ABOUT 140 MI...225 KM SE OF FORT LAUDERDALE FLORIDA MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.23 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Boca Raton to the Volusia/Flagler County Line Florida * Northwestern Bahamas A Hurricane Watch is in effect for... * Hallandale Beach to south of Boca Raton Florida A Storm Surge Watch is in effect for... * Jupiter Inlet to Ponte Vedra Beach Florida A Tropical Storm Warning is in effect for... * North of Ocean Reef to south of Boca Raton Florida * Lake Okeechobee * Volusia/Flagler County Line to Ponte Vedra Beach Florida A Tropical Storm Watch is in effect for... * North of Ponte Vedra Beach Florida to Altamaha Sound Georgia Interests elsewhere along the southeast coast of the United States should monitor the progress of Isaias. Additional watches or warnings may be required later today. 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 Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. 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, in this case within the next 12 to 24 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 200 PM EDT (1800 UTC), the center of Hurricane Isaias was located by an Air Force Reserve Hurricane Hunter aircraft and the Miami NOAA Doppler weather radar near latitude 24.9 North, longitude 78.4 West. Isaias is moving toward the northwest near 12 mph (19 km/h). A general northwestward motion with some decrease in forward speed is expected for the next day or so, followed by a north-northwestward motion by late Sunday. On the forecast track, the center of Isaias will move over the Straits of Florida tonight, and approach the southeast coast of Florida early Sunday morning. Isaias is then forecast to move near or along the the east coast of the Florida peninsula Sunday and Sunday night. Data from the reconnaissance aircraft and Doppler radar indicate that maximum sustained winds have decreased to near 75 mph (120 km/h) with higher gusts. Although Isaias has weakened after passing over Andros Island, some re-strengthening is expected tonight and Sunday morning when the cyclone will be moving over the warm waters of the Straits of Florida and the Gulf Stream. Isaias is forecast to remain a hurricane through Monday, followed by slow weakening beginning Monday night or Tuesday. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 115 miles (185 km). A wind gust to 49 mph (80 km/h) was recently observed at Nassau, Bahamas. Doppler radar indicates that tropical-storm-force winds are located just offshore Broward and Miami-Dade Counties. The estimated minimum central pressure is 990 mb (29.23 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... Jupiter Inlet to Ponte Vedra Beach FL...2-4 ft North Miami Beach to Jupiter Inlet FL...1-3 ft The deepest water will occur along the immediate coast near and to the right of the center, 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. A dangerous storm surge will raise water levels by as much as 3 to 5 feet above normal tide levels in areas of onshore winds in the Northwestern Bahamas. WIND: Hurricane conditions will continue to spread over the Northwestern Bahamas through today. Hurricane conditions are expected to reach the coast within the hurricane warning area in Florida tonight and will spread northward through Sunday. Winds are expected to first reach tropical storm strength later today, making outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. Tropical storm conditions are expected within the tropical storm warning area, and are possible within the watch area, over southern Florida by this afternoon or evening. Tropical storm conditions are expected in the warning area in northeast Florida by late Sunday, and are possible in the watch area in northeast Florida and southeast Georgia by Monday morning. RAINFALL: Isaias is expected to produce the following rain accumulations: Bahamas: 4 to 8 inches, with isolated maximum totals of 12 inches. Cuba: 1 to 2 inches, with isolated maximum totals of 4 inches. Eastern Florida: 2 to 4 inches, with isolated maximum totals of 6 inches. Northeast Florida into coastal Georgia: 1 to 2 inches. Carolinas into the mid Atlantic, including the southern and central Appalachians: 2 to 4 inches, with isolated maximum totals of 6 inches. Across the Northeast, from eastern Pennsylvania into New Jersey, southeast New York, and much of New England: 2 to 4 inches, with isolated maximum totals of 6 inches. Heavy rainfall from Isaias could result in potentially life- threatening flash flooding in the Bahamas and flash and urban flooding, especially in low-lying and poorly drained areas in eastern Florida and across the Carolinas to the Mid-Atlantic and Northeast. Minor river flooding is possible across portions of the Carolinas and into Virginia. SURF: Swells generated by Isaias are affecting portions of Hispaniola, eastern Cuba, the Turks and Caicos, and the Bahamas. These swells will spread along the east coast of Florida and the southeastern United States coast 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 500 PM EDT. $$ Forecaster Stewart
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