[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 031839 AAA
TWDAT

Tropical Weather Discussion...UPDATED
NWS National Hurricane Center Miami FL
123 PM EDT Mon Sep 3 2018

UPDATED FOR T.S. GORDON INFORMATION AT 03/1800 UTC

Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 32N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1200 UTC surface analysis and satellite imagery through
1700 UTC.

...SPECIAL FEATURES...

The center of Tropical Storm GORDON at 03/1800 UTC is near 25.8N
81.9W, or about 13 nm/25 km to the WSW of Marco Island in
Florida. GORDON is moving WNW, or 300 degrees, 14 knots. The
estimated minimum central pressure is 1007 mb. The maximum
sustained wind speeds are 45 knots with gusts to 55 knots.
Scattered moderate to strong rainshowers are within 180 nm to
the NE of the center, and within 150 nm to the SE of the center.
Widely scattered moderate to isolated strong rainshowers cover
the rest of the area that is within 150 nm to the NW of the
center.
Widely scattered moderate to isolated strong rainshowers also are
between 75W and 83W in the waters and inland, as far to the north
as the coastal areas of South Carolina. Rainshowers cover the
Bahamas from Andros Island northward from 77W westward, and
Florida from 28N southward, including across the Florida Keys and
the Straits of Florida. The PUBLIC ADVISORIES about Tropical
Storm GORDON are issued under the WMO header WTNT32 KNHC and
under the AWIPS header MIATCPAT2. The FORECAST/ADVISORIES about
Tropical Storm FLORENCE are issued under the WMO header WTNT22
KNHC, and under the AWIPS header MIATCMAT2.

The center of Tropical Storm Florence at 03/1500 UTC is near
18.3N 38.7W, or about 800 nm to the WNW of the Cabo Verde
Islands. Florence is moving WNW, or 285 degrees, 14 knots. The
estimated minimum central pressure is 997 mb. The maximum
sustained wind speeds are 55 knots with gusts to 65 knots.
Widely scattered moderate to isolated strong rainshowers are
within 240 nm of the center in the NE quadrant. Isolated moderate
rainshowers are within 120 nm on either side of the line from
08N40W to 11N36W to 16N34W. The PUBLIC ADVISORIES about Tropical
Storm FLORENCE are issued under the WMO header WTNT31 KNHC and
under the AWIPS header MIATCPAT1. The FORECAST/ADVISORIES about
Tropical Storm FLORENCE are issued under the WMO header WTNT21
KNHC, and under the AWIPS header MIATCMAT1.

...TROPICAL WAVES...

A Caribbean Sea tropical wave is along 20N65W 15N69W to NW
Venezuela near 08N72W. Isolated moderate rainshowers cover the
areas that are from 16N to 20N between 65W and 71W, across parts
of western Puerto Rico and surrounding waters, in the Mona
Passage, and in the coastal waters of the Dominican Republic.

A tropical wave moving through the NW corner of the Caribbean
Sea, moving inland, along 89W/90W, from 19N southward, through
Guatemala and El Salvador, into the eastern Pacific Ocean.
Isolated moderate rainshowers are in the NW corner of the
Caribbean Sea, and in southern sections of Belize, and in
Guatemala just to the south of Belize.

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coastal sections of Senegal
and Guinea-Bissau near 12N17W, to 08N21W, to 09N27W, and from
12N39W to 08N42W and 07N46W. The ITCZ continues from 07N46W to
08N51W and 07N57W. Scattered to numerous strong rainshowers are
from 09N to 11N between 17W and 19W, and from 07N to 09N between
20W and 24W. Widely scattered moderate to isolated strong
rainshowers are elsewhere from 04N to 14N from 27W eastward.
Isolated moderate to locally strong rainshowers are from 12N
southward between 40W and 60W.

...DISCUSSION...

GULF OF MEXICO...

Please read the SPECIAL FEATURES section for details about
Tropical Storm GORDON. An upper level cyclonic circulation center
is just to the NW of the NW coast of Cuba, about 180 nm to the SW
of GORDON. GORDON is forecast to have a NW trajectory during the
next 48 hours.

Upper level anticyclonic wind flow covers the rest of the Gulf of
Mexico.

An upper level cyclonic circulation center is inland in Mexico.
Upper level cyclonic wind flow covers the area from 23N southward
from the SW corner of the Gulf of Mexico to 103W in Mexico.

CARIBBEAN SEA...

An upper level trough extends from the NW Cuba cyclonic
circulation center to the Gulf of Honduras/southern Belize.
Isolated moderate to locally strong rainshowers cover the NW
corner of the Caribbean Sea from 15N northward from 80W westward.

A separate upper level cyclonic circulation center is in the
Jamaica Channel.

A tropical wave, that is moving across the Mona Passage, will
pass through the western Caribbean Sea by mid week. Fresh to
strong winds will continue near the coast of Colombia through
tonight. A relatively weak ridge, that is to the north of the
region, will maintain moderate to fresh trade winds across most
of the region through the start of the weekend.

ATLANTIC OCEAN...

Please read the SPECIAL FEATURES section for details about
Tropical Storm FLORENCE. It is possible that the path of FLORENCE
may bring strong winds, and seas to 9 ft, to AMZ127 east of 62W
by Thursday. Please read the Offshore Waters Forecast, FZNT23
KNHC/MIAOFFNT3 for more details.

An upper level cyclonic circulation center is near 27N59W. A
comparatively smaller-size cyclonic circulation center is near
31N63W. Upper level cyclonic wind flow, with a broad trough,
covers the Atlantic Ocean from 19N northward between 50W and 70W.
Scattered moderate to isolated strong rainshowers are from 18N to
22N between 58W and 62W. Widely scattered moderate to isolated
strong rainshowers are from 23N to 28N between 52W and 57W.
Isolated moderate to locally strong rainshowers are elsewhere in
the area of upper level cyclonic wind flow.

For additional information please visit
http://www.hurricanes.gov/marine

$$
MT
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