AGXX40 KNHC 220627
Marine Weather Discussion
NWS National Hurricane Center Miami FL
227 AM EDT Mon Oct 22 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...
As of 0000 UTC, a cold front extends from South Florida to
27N91W where it becomes a warm front to a weak 1015 mb low over
the NW Gulf near 26N95W. A stationary front then trails from the
low to 20N97W. The low pressure will lift N toward the coast of
Texas through Wed night, then east-northeastward across the N
central waters through Thu night and the NE Gulf by Fri,
dragging a new cold front across the SW Gulf. A tight pressure
gradient between the low and strong high pressure building over
the SE CONUS is now supporting fresh to strong winds N of the low
and warm front, and also W of the stationary front over the
western Gulf as a ridge has built across the eastern slopes of
the Sierra Madre Mountains in Mexico. A recent scatterometer pass
confirms the presence of these wind speeds. Winds are expected
to slightly diminish late today through early Tue. Then, these
winds are forecasted to increase again late Tue or Wed as the low
pressure tracks northeastward toward the NE Gulf and northern
Florida by Fri.
...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
Fresh to strong NE winds are forecast to pulse in the Windward
Passage and south of Hispaniola during the evening and night
hours through tonight. Elsewhere, moderate to fresh trades will
continue through early Wed, then diminish to the gentle
intensity through Thu night. A tropical wave over the far
eastern Caribbean will slowly move across the eastern Caribbean
through Wed as it weakens. East to southeast gentle to moderate
winds will follow the wave.
...SW N ATLANTIC INCLUDING THE BAHAMAS...
As of 0000 UTC, a strong cold front extending from near Bermuda
to south Florida will reach from near 28N65W to the Florida Keys
this morning, then become stationary through the middle of the
week. Fresh to strong winds and seas to near 10 ft are noted
behind the front. These marine conditions will persist through
night as strong high pressure slides eastward off the U.S. east
coast. The high pressure and front will weaken Tue through early
Thu allowing for winds to diminish and seas to subside. The
pressure gradient is forecast to tighten beginning on Thu east
of NE Florida between high pressure to the N across the eastern
seaboard and low pressure that tracks northeastward from the
Gulf of the Mexico to across northern Florida.
.WARNINGS...Any changes impacting coastal NWS offices will be
coordinated through AWIPS II Collaboration Chat, or by
.GULF OF MEXICO...
.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 GR. National Hurricane Center.