[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 181005
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
605 AM EDT Sat Jul 18 2020

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 0600 UTC surface analysis and satellite imagery through
1000 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is near 21W, from 20N southward,
moving westward at 10 to 15 knots. Scattered moderate convection
is noted from 06N to 10N within 60 nm west of the wave axis.

The axis of a tropical wave is near 32W, from 18N southward,
moving westward at 10 knots. Scattered moderate isolated strong
convection is noted from 05N to 09N within 60 nm of the wave
axis.

The axis of a tropical wave is near 48W from 20N southward,
moving westward at 10 to 15 knots. Scattered moderate isolated
strong convection is noted from 05N to 07N within 60 nm of the
wave axis.

The axis of a tropical wave is near 63W, from 21N southward,
moving westward at 10 to 15 knots. Isolated moderate convection
is noted from 18N to 21N between 63W and 65W.

The axis of a tropical wave is near 82W from the SE Gulf of
Mexico southward across the Caribbean Sea, moving westward at 10
to 15 knots. Scattered moderate isolated strong convection is
noted across the SE Gulf of Mexico and the Yucatan Channel.

...MONSOON TROUGH/ITCZ...

The monsoon trough extends from 13N16.5W to 08N39W. The ITCZ
continues from 08N39W to 07N47W. It resumes from 08N50W to 10N60W.
Aside from convection noted in the tropical waves section,
scattered moderate isolated strong convection is noted within 150
nm north and 300 nm south of the monsoon trough. Scattered
moderate isolated strong convection is noted within 60 nm south
of the ITCZ between 39W and 47W. Isolated moderate to strong
convection is noted within 60 nm of the ITCZ between 50W and 55W.

GULF OF MEXICO...

A surface trough extends from the Florida panhandle southwestward
to near 25N87W. The northern extent of a tropical wave is moving
across the SE Gulf of Mexico. These two features are supporting
scattered moderate and isolated strong convection over the SE Gulf
of Mexico, the Florida Straits, and southern Florida. Moderate to
fresh winds prevail over the SE Gulf, and west of the Yucatan
Peninsula. Gentle to moderate winds prevail elsewhere.

A surface trough will pass over the eastern Gulf today. Gentle to
moderate winds and slight seas will prevail through early next
week.

CARIBBEAN SEA...

Fresh to strong winds prevail over the south central Caribbean.
Moderate to fresh winds prevail over the north central Caribbean.
Gentle to moderate winds prevail elsewhere.

The pressure gradient between high pressure north of the area and
climatological low pressure over Colombia will maintain fresh to
strong trade winds over the south-central Caribbean through the
middle of next week. Elsewhere, gentle to moderate trade winds
will prevail across the region.

ATLANTIC OCEAN...

A surface trough extends across the NW Bahamas. Scattered moderate
isolated strong convection associated to this feature is noted
across the western Bahamas. Farther east, another surface trough
extends from 29N66W to 20N68W. Scattered showers and isolated
thunderstorms are noted within 90 nm east of the trough axis.
Another surface trough is noted from 32N49W to 28N57W. Isolated
showers are noted within 60 nm east of the trough axis. Mainly
gentle to moderate winds prevail across the discussion area.

A high pressure ridge north of the area will support pulses of
fresh to strong winds off Hispaniola and near the entrance to the
Windward Passage for the next couple of nights.

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