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Tropical Storm Isaias Public Advisory Number 29
2020-08-04 10:51:05| National Hurricane Center (Atlantic)
Issued at 500 AM EDT Tue Aug 04 2020 000 WTNT34 KNHC 040850 TCPAT4 BULLETIN Tropical Storm Isaias Advisory Number 29 NWS National Hurricane Center Miami FL AL092020 500 AM EDT Tue Aug 04 2020 ...CENTER OF ISAIAS NEARING SOUTHEAST VIRGINIA... ...STRONG WINDS...HEAVY RAINFALL...AND THE THREAT OF TORNADOES WILL SPREAD NORTHWARD ALONG THE MID-ATLANTIC COAST THIS MORNING... SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...36.3N 77.5W ABOUT 15 MI...25 KM SE OF ROANOKE RAPIDS NORTH CAROLINA ABOUT 85 MI...135 KM WSW OF NORFOLK VIRGINIA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 28 MPH...44 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: All warnings have been discontinued for the coast of North Carolina south of Surf City. The Storm Surge Watch south of Surf City has also been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Pamlico and Albemarle Sounds, including the Neuse and Pamlico Rivers * Ocracoke Inlet North Carolina to the North Carolina/Virginia border A Storm Surge Watch is in effect for... * Surf City to Ocracoke Inlet North Carolina A Tropical Storm Warning is in effect for... * North of Surf City North Carolina to Eastport 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 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, generally within 36 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 500 AM EDT (0900 UTC), the center of Tropical Storm Isaias was located over northeastern North Carolina near latitude 36.3 North, longitude 77.5 West. Isaias is moving toward the north-northeast near 28 mph (44 km/h), and this general motion accompanied by some additional increase in forward speed is expected through today. On the forecast track, the center of Isaias will to move into southeastern Virginia early this morning, near or along the coast of the mid-Atlantic states today, and across the northeastern United States into southern Canada tonight. Maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Only gradual weakening is anticipated while Isaias moves north-northeastward near the mid-Atlantic coast today. A faster rate of weakening is expected to begin tonight, and the system is forecast to become post-tropical tonight or early Wednesday. Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. Sustained winds of 48 mph (78 km/h) and a gust to 63 mph (102 km/h) was recently reported at Duck, North Carolina. Sustained winds of 39 mph (63 km/h) and a gust to 56 mph (91 km/h) were also reported at Poquoson, Virginia. The estimated minimum central pressure is 993 mb (29.33 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... Little River Inlet SC to Surf City NC...1-2 ft Surf City to Ocracoke Inlet NC...2-4 ft Ocracoke Inlet to the North Carolina/Virginia border including Pamlico Sound, Albemarle Sound, Neuse and Pamlico Rivers...3-5 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: Widespread tropical-storm conditions are expected in the tropical storm warning area from coastal North Carolina through the mid-Atlantic states, including portions of the Chesapeake Bay region today, 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 this afternoon and northern New England tonight. Gale-force winds are expected to spread into southeastern Quebec tonight and Wednesday. See products issued by Environment Canada for more information. RAINFALL: The following rainfall accumulations are expected along and near the track of Isaias: Central and eastern North Carolina into the Mid-Atlantic: 3 to 6 inches, isolated maximum totals 8 inches. Eastern New York into Vermont: 2 to 4 inches, isolated maximum totals 6 inches. Western Connecticut, western Massachusetts, New Hampshire and western 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 North Carolina through the Mid-Atlantic and Northeast through tonight. Potentially life-threatening urban flooding is possible in D.C., Baltimore, and elsewhere along and just west of the I-95 corridor today. Widespread minor to moderate river flooding is likely across portions of the Carolinas and the Mid-Atlantic. Quick-responding rivers in the Northeast will also be susceptible to minor river flooding. TORNADOES: Tornadoes are most likely through midday from southeast Virginia to New Jersey. Tornadoes will remain possible this afternoon and evening from southeast New York across New England. SURF: Swells generated by Isaias are affecting portions of the southeast coast of the United States and will spread northward along the Mid-Atlantic and Northeast coasts of the United States 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 intermediate advisory at 800 AM EDT. Next complete advisory at 1100 AM EDT. $$ Forecaster Brown/Berg
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Tropical Storm Isaias Forecast Advisory Number 29
2020-08-04 10:49:37| National Hurricane Center (Atlantic)
Issued at 0900 UTC TUE AUG 04 2020 000 WTNT24 KNHC 040849 TCMAT4 TROPICAL STORM ISAIAS FORECAST/ADVISORY NUMBER 29 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092020 0900 UTC TUE AUG 04 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... ALL WARNINGS HAVE BEEN DISCONTINUED FOR THE COAST OF NORTH CAROLINA SOUTH OF SURF CITY. THE STORM SURGE WATCH SOUTH OF SURF CITY HAS ALSO BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PAMLICO AND ALBEMARLE SOUNDS...INCLUDING THE NEUSE AND PAMLICO RIVERS * OCRACOKE INLET NORTH CAROLINA TO THE NORTH CAROLINA/VIRGINIA BORDER A STORM SURGE WATCH IS IN EFFECT FOR... * SURF CITY TO OCRACOKE INLET NORTH CAROLINA A TROPICAL STORM WARNING IS IN EFFECT FOR... * NORTH OF SURF CITY NORTH CAROLINA TO EASTPORT 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 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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...GENERALLY WITHIN 36 HOURS. TROPICAL STORM CENTER LOCATED NEAR 36.3N 77.5W AT 04/0900Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 20 DEGREES AT 24 KT ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 40NE 50SE 0SW 0NW. 34 KT.......110NE 120SE 40SW 40NW. 12 FT SEAS..180NE 180SE 0SW 0NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 36.3N 77.5W AT 04/0900Z AT 04/0600Z CENTER WAS LOCATED NEAR 35.0N 78.1W FORECAST VALID 04/1800Z 40.3N 75.0W...INLAND MAX WIND 55 KT...GUSTS 70 KT. 50 KT... 40NE 70SE 20SW 0NW. 34 KT...110NE 140SE 40SW 40NW. FORECAST VALID 05/0600Z 45.8N 72.1W...POST-TROP/INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 180SE 0SW 0NW. FORECAST VALID 05/1800Z 50.3N 70.3W...POST-TROP/EXTRATROP MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 06/0600Z 53.2N 69.5W...POST-TROP/EXTRATROP MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 06/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 36.3N 77.5W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 04/1200Z NEXT ADVISORY AT 04/1500Z $$ FORECASTER BROWN
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Summary for Tropical Storm Isaias (AT4/AL092020)
2020-08-04 09:56:37| National Hurricane Center (Atlantic)
...CENTER OF ISAIAS NEARING SOUTHEAST VIRGINIA... ...STRONG WINDS...HEAVY RAINFALL...AND THE THREAT OF TORNADOES WILL SPREAD NORTHWARD ALONG THE MID-ATLANTIC COAST THIS MORNING... As of 5:00 AM EDT Tue Aug 4 the center of Isaias was located near 36.3, -77.5 with movement NNE at 28 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 70 mph.
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Tropical Storm Isaias Update Statement
2020-08-04 08:57:05| National Hurricane Center (Atlantic)
Issued at 300 AM EDT Tue Aug 4 2020 705 WTNT64 KNHC 040656 TCUAT4 Tropical Storm Isaias Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092020 300 AM EDT Tue Aug 4 2020 ...ISAIAS WEAKENS TO A TROPICAL STORM OVER EASTERN NORTH CAROLINA... ...STRONG WINDS, HEAVY RAINFALL, AND THE THREAT OF TORNADOES BEGINNING TO SPREAD INTO SOUTHEASTERN VIRGINIA... A weather station in Pamlico Sound recently reported a sustained wind of 47 mph (76 km/h) and a gust to 55 mph (89 km/h). The hurricane warnings for the coast of southern North Carolina will remain in effect until tropical storm conditions diminish in a couple of hours. SUMMARY OF 300 AM EDT...0700 UTC...INFORMATION ----------------------------------------------- LOCATION...35.5N 78.0W ABOUT 35 MI...55 KM WSW OF GREENVILLE NORTH CAROLINA ABOUT 50 MI...80 KM ESE OF RALEIGH NORTH CAROLINA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 24 MPH...39 KM/H MINIMUM CENTRAL PRESSURE...992 MB...29.29 INCHES $$ Forecaster Berg/Brown
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Summary for Tropical Storm Isaias (AT4/AL092020)
2020-08-04 08:57:01| National Hurricane Center (Atlantic)
...ISAIAS WEAKENS TO A TROPICAL STORM OVER EASTERN NORTH CAROLINA... ...STRONG WINDS, HEAVY RAINFALL, AND THE THREAT OF TORNADOES BEGINNING TO SPREAD INTO SOUTHEASTERN VIRGINIA... As of 3:00 AM EDT Tue Aug 4 the center of Isaias was located near 35.5, -78.0 with movement NNE at 24 mph. The minimum central pressure was 992 mb with maximum sustained winds of about 70 mph.
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