AGXX40 KNHC 271855
Marine Weather Discussion
NWS National Hurricane Center Miami FL
255 PM EDT Sun May 27 2018
Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea,
and Tropical North Atlantic from 07N to 19N between 55W and 64W
and the Southwest North Atlantic including the Bahamas
...GULF OF MEXICO...
Subtropical Storm Alberto near 27.1N 84.4W 994 mb at 11 AM EDT
moving N at 12 kt. Maximum sustained winds 45 kt gusts 55 kt.
Alberto will move to 28.7N 84.9W this evening...inland to 30.3N
85.9W Mon morning...inland to 31.6N 86.4W Mon evening ...and
inland to 33.6N 86.7W Tue morning. This system is currently
supported at upper levels by a trough that extends along 87W
covering the central and east Gulf waters and the Yucatan
Channel. Latest scatterometer data depicts fresh to strong winds
over the east Gulf near Alberto, moderate to fresh winds over the
central Gulf, and gentle to moderate winds over the western Gulf
waters. Wave heights across the basin are ranging from 12-16 ft
near Alberto's center, 5-8 ft over the central Gulf and 2-3 ft
for the western Gulf waters. Expect for winds and seas to
decrease following landfall on Monday with ridging building in
from the Atlantic. A strong trough will impact the southern
waters Wed and Thu.
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
Subtropical Storm Alberto in the eastern Gulf of Mexico will
continue to move N and away from the NW Caribbean.
An upper-level trough extends from the central Gulf of Mexico,
across the Yucatan Channel into the northwest corner of the
Caribbean. Scatterometer data depicts moderate to fresh easterly
winds across most of the basin except west of 80W, where gentle
to moderate southerly winds prevail, and over the south Central
Caribbean where fresh to locally strong winds are occurring.
Wave heights range between 4-6 ft across the far east and west
Caribbean, while 5-8 ft seas are between 69W- 74W. High pressure
in the central Atlantic will maintain fresh to strong trade winds
in the central Caribbean through the week. The strongest winds
are expected over the south central Caribbean. A strong trough
will move from the NW Caribbean to the Yucatan Peninsula Wed
through early Fri with associated increasing winds and seas.
...SW N ATLANTIC INCLUDING THE BAHAMAS...
The pres gradient will tighten today through Mon night as
Subtropical Storm Alberto moves through the eastern Gulf of
Mexico while central Atlantic ridging lingers. Winds will be
near gale W of 79W and strong between 77W and 79W through
tonight. Seas will increase to near 9 ft this afternoon through
tonight over the waters N of the Bahamas and W of 77W due to
these winds. Conditions will improve Tue as the pres gradient
slackens. A cold front or frontal trough may drop into the NE
waters Wed night through Thu.
.WARNINGS...Any changes impacting coastal NWS offices will be
coordinated through AWIPS II Collaboration Chat, or by
.GULF OF MEXICO...
.GMZ015...NE GULF N OF 25N E OF 87W...
Tropical Storm Warning today into Mon.
.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
.SW N ATLANTIC INCLUDING THE BAHAMAS...
*For detailed zone descriptions, please visit:
Note: gridded marine forecasts are available in the National
Digital Forecast Database (NDFD) at:
For additional information, please visit:
.Forecaster Latto. National Hurricane Center.