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Hurricane Maria Intermediate Advisory Number 38A
NWS National Hurricane Center Miami FL AL152017
200 PM EDT Mon Sep 25 2017
...MARIA CONTINUES TO MOVE SLOWLY NORTHWARD...
...LARGE SWELLS AFFECTING MUCH OF THE EAST COAST OF THE UNITED
SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION
ABOUT 300 MI...480 KM SSE OF CAPE HATTERAS NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...966 MB...28.53 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Cape Lookout to Duck
* Albemarle and Pamlico Sounds
A Tropical Storm Watch is in effect for...
* North of Duck to the North Carolina/Virginia border
* North of Surf City to south of Cape Lookout
A Storm Surge Watch is in effect for...
* Cape Lookout to Duck
Interests elsewhere along the Carolina and Mid-Atlantic coasts
should monitor the progress of Maria.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
24 to 36 hours.
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within the next 24
to to 36 hours.
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.
For a depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
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 48-HOUR OUTLOOK
At 200 PM EDT (1800 UTC), the center of Hurricane Maria was located
near latitude 31.4 North, longitude 73.0 West. Maria is moving
toward the north near 7 mph (11 km/h), and this general motion with
some decrease in forward speed is expected through Tuesday night. On
the forecast track, the center of Maria will move well east of the
southeast coast of the United States during the next day or so.
Reports from an Air Force Reserve Hurricane Hunter aircraft
indicate that maximum sustained winds are near 80 mph (130 km/h)
with higher gusts. Gradual weakening is forecast during the next
couple of days and Maria is forecast to become a tropical storm
Maria is a large hurricane. Hurricane-force winds extend outward up
to 90 miles (150 km), primarily to the east of center, and tropical-
storm-force winds extend outward up to 230 miles (370 km). NOAA
buoy 41002, located about 100 miles west-northwest of Maria's
center, recently reported sustained winds of 45 mph (72 km/h) and a
gust to 60 mph (96 km/h).
The latest minimum central pressure reported by reconnaissance
aircraft is 966 mb (28.53 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected within the warning
area beginning Tuesday. Tropical storm conditions are possible
within the watch area beginning Tuesday.
STORM SURGE: 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 is
expected to reach the following heights above ground if the peak
surge occurs at the time of high tide...
Cape Lookout to Duck including the sound side of the Outer
Banks...2 to 4 ft
Surge-related flooding depends on the relative timing of the surge
and the tidal cycle, 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: Maria is expected to produce total rainfall accumulations
of 1 to 2 inches over the Outer Banks of North Carolina through
SURF: Swells generated by Maria are affecting portions of the coast
of the southeastern United States and Bermuda and will be increasing
along the Mid-Atlantic and southern New England coasts today.
Swells also continue to affect Puerto Rico, the northern coast of
Hispaniola, the Turks and Caicos Islands, and the Bahamas. These
swells are likely to cause life-threatening surf and rip current
conditions. Please consult products from your local weather office
for more information.
Next complete advisory at 500 PM EDT.