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Hurricane Dorian Intermediate Advisory Number 31A
NWS National Hurricane Center Miami FL AL052019
200 AM EDT Sun Sep 01 2019
...EXTREMELY DANGEROUS HURRICANE DORIAN CLOSING IN ON THE
...LIFE-THREATENING STORM SURGE...HURRICANE-FORCE WINDS...AND HEAVY
RAINFALL EXPECTED OVER THE NORTHWESTERNMOST BAHAMAS...
SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION
ABOUT 95 MI...150 KM E OF GREAT ABACO ISLAND
ABOUT 280 MI...450 KM E OF WEST PALM BEACH FLORIDA
MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...934 MB...27.58 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* Northwestern Bahamas excluding Andros Island
A Hurricane Watch is in effect for...
* Andros Island
A Tropical Storm Watch is in effect for...
* Deerfield Beach to Sebastian Inlet
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 Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
Interests elsewhere in southern and central Florida should continue
to monitor the progress of Dorian. Additional watches may be
required for portions of the east coast of Florida 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
At 200 AM EDT (0600 UTC), the center of Hurricane Dorian was located
near latitude 26.3 North, longitude 75.6 West. Dorian is moving
toward the west near 8 mph (13 km/h), and a slower westward motion
should occur for the next day or two, followed by a gradual turn
toward the northwest. On this track, the core of Dorian should be
near or over portions of the northwestern Bahamas later today, and
move closer to the Florida east coast late Monday through Tuesday.
Data from an Air Force Reserve Unit Hurricane Hunter aircraft
indicate that the maximum sustained winds remain near 150 mph (240
km/h) with higher gusts. Dorian is a category 4 hurricane on the
Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity
are likely, but Dorian is expected to remain a powerful hurricane
during the next few days.
Hurricane-force winds extend outward up to 30 miles (45 km) from
the center, and tropical-storm-force winds extend outward up to 105
miles (165 km).
The minimum central pressure estimated from Hurricane Hunter
observations is 934 mb (27.58 inches).
HAZARDS AFFECTING LAND
WIND: Hurricane conditions are expected in the hurricane warning
area across the northwestern Bahamas later today, with tropical
storm winds beginning within the next several hours.
Tropical storm conditions are possible within the tropical storm
watch area on Monday.
STORM SURGE: A life-threatening storm surge will raise water levels
by as much as 15 to 20 feet above normal tide levels in areas of
onshore winds on the Abaco Islands and Grand Bahama Island. Near
the coast, the surge will be accompanied by large and destructive
RAINFALL: Dorian is expected to produce the following rainfall
accumulations this weekend into the middle of next week:
Northwestern Bahamas...10 to 15 inches, isolated 25 inches.
Coastal sections of the southeast United States from central
Florida northward through the Carolinas...4 to 8 inches, isolated
Central Bahamas and South Florida...2 to 4 inches, isolated 6
This rainfall may cause life-threatening flash floods.
SURF: Large swells will affect the east-facing shores of the
Bahamas, the Florida east coast, and 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.
Next complete advisory at 500 AM EDT.