ZCZC MIATCPAT5 ALL
TTAA00 KNHC DDHHMM
Hurricane Maria Intermediate Advisory Number 6A
NWS National Hurricane Center Miami FL AL152017
800 PM AST Sun Sep 17 2017
...MARIA CONTINUING TO STRENGTHEN AS IT APPROACHES THE LESSER
SUMMARY OF 800 PM AST...0000 UTC...INFORMATION
ABOUT 125 MI...200 KM ENE OF BARBADOS
ABOUT 255 MI...410 KM ESE OF DOMINICA
MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...982 MB...29.00 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
The Government of France has issued a Hurricane Warning for
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* St. Kitts, Nevis, and Montserrat
A Tropical Storm Warning is in effect for...
* Antigua and Barbuda
* Saba and St. Eustatius
* St. Lucia
A Hurricane Watch is in effect for...
* U.S. Virgin Islands
* British Virgin Islands
* Saba and St. Eustatius
* St. Maarten
* St. Martin and St. Barthelemy
A Tropical Storm Watch is in effect for...
* St. Vincent and the Grenadines
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. A warning is typically issued
36 hours before the anticipated first occurrence of tropical-storm-
force winds, conditions that make outside preparations difficult or
dangerous. Preparations to protect life and property should be
rushed to completion.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
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
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
Interests elsewhere in the Lesser Antilles and Puerto Rico should
monitor the progress of this system. Additional Tropical Storm or
Hurricane Watches and Warnings will likely be issued tonight or on
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND 48-HOUR OUTLOOK
At 800 PM AST (0000 UTC), the center of Hurricane Maria was located
by the French radar on Martinique near latitude 14.0 North,
longitude 57.9 West. Maria is moving toward the west-northwest near
15 mph (24 km/h), and this motion with a decrease in forward speed
is expected through Tuesday. On the forecast track, the center of
Maria will move across the Leeward Islands Monday night and then
over the extreme northeastern Caribbean Sea on Tuesday.
Maximum sustained winds have increased to near 80 mph (130 km/h)
with higher gusts. Additional strengthening is forecast during the
next 48 hours, and Maria could be near major hurricane intensity
when it moves across the Leeward Islands Monday night.
Hurricane-force winds extend outward up to 15 miles (30 km) from
the center, and tropical-storm-force winds extend outward up to 105
miles (165 km).
The estimated minimum central pressure is 982 mb (29.00 inches).
HAZARDS AFFECTING LAND
WIND: Hurricane conditions are first expected within portions of
the Leeward Islands by Monday night, with tropical storm conditions
beginning on Monday. Hurricane conditions are possible within the
hurricane watch area by Tuesday, with tropical storm conditions
possible Monday night. Tropical storm conditions are possible in
the tropical storm watch area Monday or Monday night.
STORM SURGE: A dangerous storm surge accompanied by large and
destructive waves will raise water levels by as much as 4 to 6 feet
above normal tide levels near where the center of Maria moves
across the Leeward Islands.
RAINFALL: Maria is expected to produce total rain accumulations of
6 to 12 inches with isolated maximum amounts of 20 inches across the
Leeward Islands, including Puerto Rico and the U.S. and British
Virgin Islands, through Wednesday night. Maria is also expected to
produce total rain accumulations of 2 to 4 inches for the northern
and central Windward Islands. In all the above areas, these
rainfall amounts could cause life-threatening flash floods and
SURF: Swells generated by Maria are affecting the Lesser Antilles.
These swells are likely to cause life-threatening surf and rip
current conditions. Please consult products from your local
Next complete advisory at 1100 PM AST.