[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 281655
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1255 PM EDT Tue Aug 28 2018

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
1630 UTC.

...TROPICAL WAVES...

An Atlantic Ocean tropical wave is along 19W/20W from 20N
southward. Isolated moderate rainshowers are from 05N to 19N
between Africa and 23W.

An Atlantic Ocean tropical wave is along 26W/27W from 20N
southward. Widely scattered moderate to isolated strong
rainshowers are from 07N to 12N between 26W and 30W. Isolated
moderate to locally strong rainshowers are elsewhere from 04N to
13N between 20W and 30W. Rainshowers are possible in the remainder
of the area from 19N southward from 44W eastward.

An Atlantic Ocean tropical wave is along 52W/53W from 20N
southward. Isolated moderate rainshowers are from 10N to 20N
between 43W and 60W.

A Caribbean Sea tropical wave is along 68W/69W from 21N
southward, through the Mona Passage/eastern sections of the
Dominican Republic to Venezuela. Upper level cyclonic wind flow
covers the Atlantic Ocean from 20N to 27N between 60W and 70W.
Isolated moderate rainshowers are from 16N to 26N between 60W and
70W.

A tropical wave is along 88W/89W from 22N southward, from the
Yucatan Peninsula through Belize, Guatemala, and El Salvador, into
the eastern Pacific Ocean. Isolated moderate rainshowers are
within 90 nm on either side of the tropical wave.

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coastal sections of Senegal
near 14N17W, to 10N24W, 08N32W, and 09N41W. The ITCZ is not
discernible. Isolated moderate to locally strong rainshowers are
cover the area from 04N to 13N between 20W and 30W. Isolated
moderate rainshowers cover the rest of the area from 19N
southward from 60W eastward.

...DISCUSSION...

GULF OF MEXICO...

An upper level inverted trough is in the N central part of the
Gulf of Mexico. Cyclonic wind flow covers the NE corner of the
area. isolated moderate rainshowers are from 90W eastward.

An upper level cyclonic circulation center is in the NE corner of
Mexico. Cyclonic wind flow covers Texas and Mexico and the coastal
waters from 20N northward from 92W westward. isolated moderate
rainshowers cover the Gulf waters from 90W westward. 24-hour
rainfall totals that are listed for the period that ended at
28/1200 UTC...according to the PAN AMERICAN TEMPERATURE AND
PRECIPITATION TABLES...MIATPTPAN/SXCA01 KNHC...are 1.21 in
Veracruz in Mexico.

A surface trough will develop each evening in the Yucatan
Peninsula, before pushing offshore into the SW Gulf of Mexico. A
surge of moderate to fresh NE to E winds will accompany this
trough. A surface ridge will dominate the rest of the Gulf waters,
supporting gentle to moderate winds.

CARIBBEAN SEA...

An upper level cyclonic circulation center is about 150 nm to the
south of Cuba, in the NW corner of the Caribbean Sea. Isolated
moderate rainshowers are from 16N northward from 70W westward.

The eastern part of the eastern Pacific monsoon trough is along
09N from 74W in Colombia beyond southern Costa Rica. An upper
level trough extends from southern Nicaragua to Panama. scattered
moderate to strong rainshowers are from 12N southward from 81W
westward to land.

Fresh to strong winds will prevail in the south central Caribbean
Sea through Wednesday before diminishing. Gentle to moderate
winds will prevail elsewhere.

ATLANTIC OCEAN...

Upper level cyclonic wind flow, with an inverted trough, covers
the Atlantic Ocean from 20N northward from 70W westward. isolated
moderate rainshowers are in the area of cyclonic wind flow.

An upper level trough extends from a 33N32W cyclonic circulation
center, to a second cyclonic circulation center that is near
28N44W. The trough continues to a third upper level cyclonic
circulation center that is near 23N63W. Isolated moderate
rainshowers are to the NW of the line that passes through 32N30W
to 24N50W to 18N61W.

Surface high pressure will prevail through the forecast period.
Expect moderate to fresh winds S of 24N, and gentle to moderate
winds N of 24N. The wind speeds will pulse to fresh to strong
just N of Hispaniola at night through Saturday.

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

$$
MT
This weather bulletin was brought to you by:
www.nashvilleweather.net