Hurricane Dorian Advisory Number 37

NWS National Hurricane Center Miami FL      

1100 AM EDT Mon Sep 02 2019

 

SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION

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LOCATION...26.8N 78.3W

ABOUT 30 MI...50 KM NE OF FREEPORT GRAND BAHAMA ISLAND

ABOUT 110 MI...180 KM E OF WEST PALM BEACH FLORIDA

MAXIMUM SUSTAINED WINDS...155 MPH...250 KM/H

PRESENT MOVEMENT...W OR 280 DEGREES AT 1 MPH...2 KM/H

MINIMUM CENTRAL PRESSURE...922 MB...27.23 INCHES

 

 

WATCHES AND WARNINGS

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CHANGES WITH THIS ADVISORY:

 

The Storm Surge Warning has been extended northward along the east coast of Florida to the Flagler/Volusia County Line.

 

The Storm Surge Watch has been extended northward along the Georgia coast to the Savannah River.

 

The Hurricane Warning along the east coast of Florida has been extended northward to the Flagler/Volusia County Line.

 

The Hurricane Watch has been extended northward to Altamaha Sound Georgia.

 

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

 

A Storm Surge Warning is in effect for...

* Lantana to the Flagler/Volusia County Line

 

A Storm Surge Watch is in effect for...

* North of Deerfield Beach to south of Lantana

* Flagler/Volusia County Line to the Savannah River

 

A Hurricane Warning is in effect for...

* Grand Bahama and the Abacos Islands in the northwestern Bahamas

* Jupiter Inlet to the Flagler/Volusia County Line

 

A Hurricane Watch is in effect for...

* North of Deerfield Beach to Jupiter Inlet

* Flagler/Volusia County Line to the Altamaha Sound Georgia

 

A Tropical Storm Warning is in effect for...

* North of Deerfield Beach to Jupiter Inlet

 

A Tropical Storm Watch is in effect for...

* North of Golden Beach to Deerfield Beach

* Lake Okeechobee

 

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 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.

 

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. 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 Tropical Storm Warning means that tropical storm conditions are expected within the warning area within 36 hours.

 

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

 

Interests elsewhere along southeast coast of the United States should continue to monitor the progress of Dorian, as additional watches may be required later today.

 

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

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At 1100 AM EDT (1500 UTC), the eye of Hurricane Dorian was located near latitude 26.8 North, longitude 78.3 West. Dorian is moving very slowly toward the west near 1 mph (2 km/h). A slow

westward to west-northwest motion is forecast during the next day or so, followed by a gradual turn toward the northwest and north. On this track, the core of extremely dangerous Hurricane Dorian will continue to pound Grand Bahama Island through much of today and tonight. The hurricane will then move dangerously close to the Florida east coast late tonight through Wednesday evening and then move dangerously close to the Georgia and South Carolina coasts on Wednesday night and Thursday.

 

Maximum sustained winds are near 155 mph (250 km/h) with higher gusts. Dorian is an extremely dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Although gradual weakening is forecast, Dorian is expected to remain a powerful hurricane during the next couple of days.

 

Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km).

 

The estimated minimum central pressure is 922 mb (27.23 inches).

 

 

HAZARDS AFFECTING LAND

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WIND: Catastrophic hurricane conditions continue on Grand Bahama Island. Do not venture out into the eye, as winds will suddenly increase after the eye passes.

 

Hurricane conditions are expected within the Hurricane Warning area in Florida by late tonight or Tuesday. Hurricane conditions are possible in the Hurricane Watch area on Wednesday.

 

Tropical storm conditions are expected within the Tropical Storm warning area today and Tuesday, and are possible in the Tropical Storm watch area by tonight.

 

STORM SURGE: A life-threatening storm surge will raise water levels by as much as 18 to 23 feet above normal tide levels in areas of onshore winds on Grand Bahama Island. Near the coast, the surge

will be accompanied by large and destructive waves. Water levels should very slowly subside on the Abaco Islands during the day.

 

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...

 

Lantana to the Savannah River...4 to 7 ft

North of Deerfield Beach to Lantana...2 to 4 ft

 

Water levels could begin rise well in advance of the arrival of strong winds. The surge will be accompanied by large and destructive waves. Surge-related flooding depends on the how close the center of Dorian comes to the coast, 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.

 

RAINFALL: Dorian is expected to produce the following rainfall totals through late this week:

 

Northwestern Bahamas...12 to 24 inches, isolated 30 inches.

Central Bahamas...Additional 1 to 3 inches, isolated storm totals of 6 inches.

Coastal Carolinas...5 to 10 inches, isolated 15 inches.

Atlantic Coast from the Florida peninsula through Georgia...4 to 8 inches, isolated 10 inches.

 

This rainfall may cause life-threatening flash floods.

 

SURF: Large swells are affecting east-facing shores of the Bahamas and the Florida east coast, and will spread northward along the southeastern United States 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: Isolated tornadoes are possible this afternoon into tonight along the immediate coast of east-central Florida.