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Hurricane Dorian Intermediate Advisory Number 30A
NWS National Hurricane Center Miami FL AL052019
800 PM EDT Sat Aug 31 2019
...NOAA AND AIR FORCE HURRICANE HUNTER AIRCRAFT REAFFIRM DORIAN'S
CATEGORY FOUR STRENGTH...
SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
ABOUT 155 MI...245 KM E OF GREAT ABACO ISLAND
ABOUT 335 MI...540 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...941 MB...27.79 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 tonight or
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 800 PM EDT (0000 UTC), the distinct eye of Hurricane Dorian was
located near latitude 26.2 North, longitude 74.7 West. Dorian is
moving toward the west near 8 mph (13 km/h), and a slower westward
motion should continue 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 on
Sunday, and move closer to the Florida east coast late Monday
Data from NOAA and Air Force Hurricane Hunter aircraft indicate
that the maximum sustained winds remain near 150 mph (240 km/h)
with higher gusts. Dorian remains 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 latest minimum central pressure reported by reconnaissance
aircraft is 941 mb (27.79 inches).
HAZARDS AFFECTING LAND
WIND: Hurricane conditions are expected in the hurricane warning
area across the northwestern Bahamas by Sunday, with tropical storm
winds beginning tonight.
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 10 to 15 feet above normal tide levels in areas of
onshore winds the Abaco Islands and Grand Bahama Island. Near the
coast, the surge will be accompanied by large and destructive waves.
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...4 to 8 inches,
isolated 12 inches.
Central Bahamas...2 to 4 inches, isolated 6 inches.
This rainfall may cause life-threatening flash floods.
SURF: Swells will begin 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 1100 PM EDT.