3pm update:
Location: 33.6°N 76.1°W Moving: WNW at 10 mph Min pressure: 955 mb Max sustained: 105 mph
BULLETIN
Hurricane Florence Intermediate Advisory Number 57A...Corrected NWS National Hurricane Center Miami FL AL062018 200 PM EDT Thu Sep 13 2018
Corrected distances in summary block.
...HEAVY RAINBANDS WITH TROPICAL-STORM-FORCE WINDS SPREADING ACROSS THE OUTER BANKS AND COASTAL SOUTHEASTERN NORTH CAROLINA... ...LIFE-THREATENING STORM SURGE AND RAINFALL EXPECTED...
SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...33.6N 76.0W ABOUT 110 MI...180 KM ESE OF WILMINGTON NORTH CAROLINA ABOUT 165 MI...270 KM E OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...955 MB...28.20 INCHES
WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY:
None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for... * South Santee River South Carolina to Duck North Carolina * Albemarle and Pamlico Sounds, including the Neuse and Pamlico Rivers
A Storm Surge Watch is in effect for... * Edisto Beach South Carolina to South Santee River South Carolina * North of Duck North Carolina to the North Carolina/Virginia border
A Hurricane Warning is in effect for... * South Santee River South Carolina to Duck North Carolina * Albemarle and Pamlico Sounds
A Hurricane Watch is in effect for... * Edisto Beach South Carolina to South Santee River South Carolina
A Tropical Storm Warning is in effect for... * North of Duck North Carolina to Cape Charles Light Virginia * Chesapeake Bay south of New Point Comfort
Interests elsewhere in the southeastern and mid-Atlantic states should monitor the progress of Florence.
A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline. 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 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, in this case within the next 12 to 24 hours. Preparations to protect life and property should be nearing 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area.
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 200 PM EDT (1800 UTC), data from an Air Force Reserve Unit Hurricane Hunter aircraft and NOAA Doppler weather radars indicate that Florence was located near latitude 33.6 North, longitude 76.0 West. Florence is moving toward the northwest near 10 mph (17 km/h). This general motion, accompanied by a gradual decrease in forward speed, is expected through today. A turn toward the west- northwest and west at an even slower forward speed is expected by tonight and continuing into Friday, and a slow west-southwestward motion is forecast Friday night and Saturday. On the forecast track, the center of Florence will approach the coasts of North and South Carolina later today, then move near or over the coast of southern North Carolina and northeastern South Carolina in the hurricane warning area tonight and Friday. A slow motion across portions of eastern South Carolina is forecast Friday night through Saturday night.
Data from the aircraft and Doppler weather radars indicate that maximum sustained winds remain near 105 mph (165 km/h) with higher gusts. Little change in strength is expected before the eye of Florence reaches the coast, with weakening expected after the center moves inland.
Florence is a large hurricane. Hurricane-force winds extend outward up to 80 miles (130 km) from the center and tropical-storm-force winds extend outward up to 195 miles (315 km). A NOAA reporting station at Cape Lookout, North Carolina, recently reported a sustained wind of 53 mph (85 km/h) and a gust to 63 mph (101 km/h). Weatherflow private observing stations in North Carolina recently reported a sustained wind of 53 mph (85 km/h) and a gust to 70 mph (113 km/h) at Fort Macon, a sustained wind of 47 mph (72 km/h) and a gust to 60 mph (97 km/h) in Ocracoke, and a sustained wind of 45 mph (72 km/h) and a gust to 56 mph (90 km/h) in Pamlico Sound.
The estimated minimum central pressure based on recent data from the aircraft remains at 955 mb (28.20 inches).
The 11am update from the National Hurricane Center was just released. At this time, Chatham County is no longer in the error cone. CEMA will continue to monitor the storm; potential impacts will likely include wind and rain.
...HEAVY RAINBANDS WITH TROPICAL-STORM-FORCE WINDS SPREADING ACROSSTHE OUTER BANKS AND COASTAL SOUTHEASTERN NORTH CAROLINA......LIFE-THREATENING STORM SURGE AND RAINFALL EXPECTED...
ABOUT 335 MI...N/NE of Chatham County, GeorgiaMAXIMUM SUSTAINED WINDS...105 MPH...165 KM/HPRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/HMINIMUM CENTRAL PRESSURE...955 MB...28.20 INCHES
WATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY:
None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...* South Santee River South Carolina to Duck North Carolina* Albemarle and Pamlico Sounds, including the Neuse and PamlicoRivers
A Storm Surge Watch is in effect for...* Edisto Beach South Carolina to South Santee River South Carolina* North of Duck North Carolina to the North Carolina/Virginia border
A Hurricane Warning is in effect for...* South Santee River South Carolina to Duck North Carolina* Albemarle and Pamlico Sounds
A Hurricane Watch is in effect for...* Edisto Beach South Carolina to South Santee River South Carolina
A Tropical Storm Warning is in effect for...* North of Duck North Carolina to Cape Charles Light Virginia* Chesapeake Bay south of New Point Comfort
Interests elsewhere in the southeastern and mid-Atlantic statesshould monitor the progress of Florence.
A Storm Surge Warning means there is a danger of life-threateninginundation, from rising water moving inland from the coastline. Fora depiction of areas at risk, please see the National WeatherService Storm Surge Watch/Warning Graphic, available athurricanes.gov. This is a life-threatening situation. Personslocated within these areas should take all necessary actions toprotect life and property from rising water and the potential forother dangerous conditions. Promptly follow evacuation and otherinstructions from local officials.
A Storm Surge Watch means there is a possibility of life-threatening inundation, from rising water moving inland from thecoastline.
A Hurricane Warning means that hurricane conditions are expectedsomewhere within the warning area, in this case within the next 12to 24 hours. Preparations to protect life and property should benearing completion.
A Hurricane Watch means that hurricane conditions are possiblewithin the watch area. A watch is typically issued 48 hoursbefore the anticipated first occurrence of tropical-storm-forcewinds, conditions that make outside preparations difficult ordangerous.
A Tropical Storm Warning means that tropical storm conditions areexpected somewhere within the warning area.
For storm information specific to your area, including possibleinland watches and warnings, please monitor products issued by yourlocal National Weather Service forecast office.
DISCUSSION AND OUTLOOK----------------------At 1100 AM EDT (1500 UTC), data from an Air Force Reserve UnitHurricane Hunter aircraft and NOAA Doppler weather radars fromindicate that Florence was located near latitude 33.4 North,longitude 75.5 West. Florence is moving toward the northwest near10 mph (17 km/h). This general motion, accompanied by a furtherdecrease in forward speed, is expected to continue through today. Aturn to the west-northwest and west at an even slower forward speedis expected tonight and Friday, and a slow west-southwestward motionis forecast Friday night and Saturday. On the forecast track, thecenter of Florence will approach the coasts of North and SouthCarolina later today, then move near or over the coast of southernNorth Carolina and northeastern South Carolina in the hurricanewarning area tonight and Friday. A slow motion across portions ofeastern South Carolina is forecast Friday night through Saturdaynight.
Data from the aircraft and Doppler weather radars indicate thatmaximum sustained winds have decreased to near 105 mph (165 km/h)with higher gusts. Little change in strength is expected before thecenter reaches the coast, with weakening expected after the centermoves inland.
Florence is a large hurricane. Hurricane-force winds extend outwardup to 80 miles (130 km) from the center and tropical-storm-forcewinds extend outward up to 195 miles (315 km). NOAA Buoy 41025,located near Diamond Shoals, North Carolina, recently reported asustained wind of 54 mph (87 km/h).
The latest minimum central pressure based on data from the aircraftis 955 mb (28.20 inches).