000
AXNT20 KNHC 210600
TWDAT 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0605 UTC Sat Nov 21 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 0000 UTC surface analysis and satellite imagery through
0540 UTC.

...TROPICAL WAVES...

An Atlantic Ocean tropical wave is along 60W, from 17N 
southward, moving westward 10 to 15 knots. Precipitation: 
isolated moderate to locally strong is from 10N to 20N: within 
240 nm to the east of the tropical wave, and within 420 nm to 
the west of the tropical wave. 

A Caribbean Sea tropical wave is along 74W, from 19N southward, 
moving westward 10 to 15 knots. Precipitation: isolated to 
widely scattered moderate and isolated strong is within 280 nm 
to the east of the tropical wave, and within 600 nm to the west 
of tropical wave from 13N northward.

A Caribbean Sea tropical wave is along 86W/87W, from 19N 
southward, moving westward 10 knots. Precipitation: scattered to 
numerous strong is in the waters of the NW corner of the 
Caribbean Sea, from 19N southward from the tropical wave 
westward to land. 

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coastal plains of Guinea 
near 10N14W, to 08N20W, and to 06N30W, and to 05N32W. The ITCZ 
continues from 05N32W, to 01N43W. Precipitation: widely 
scattered to scattered moderate and isolated strong, in 
individual clusters, is from the monsoon trough southward, from 
30W eastward. Isolated moderate to locally strong is from 11N 
southward between 30W and 60W.

GULF OF MEXICO...

A surface ridge extends from Mississippi, to the middle Texas 
Gulf coast, to Mexico near 20N99W. A surface trough extends from 
the NE part of the Isthmus of Tehuantepec of southern Mexico, 
toward the northwest, to the coast of Mexico from 23N to 24N 
between 97W and 98W. Precipitation: widely scattered moderate to 
isolated strong is in the northern half of Guatemala, and in 
Mexico between 90W and 93W in the Isthmus of Tehuantepec of 
southern Mexico. Rainshowers are possible in the Gulf of Mexico 
from 26N southward from 90W westward.

The wind speeds and the sea heights will continue to diminish, 
overnight, in the southern Gulf of Mexico, and in the Straits of 
Florida. A weak cold front will move across the NE Gulf of 
Mexico on Monday. 

CARIBBEAN SEA...

Two tropical waves are in the Caribbean Sea. One tropical wave 
is along 74W. The second tropical wave is along 86W/87W. All the 
precipitation that is in the Caribbean Sea is related to the 
tropical waves.

The monsoon trough is along 11N75W in northern Colombia, 
southwestward, across Panama, beyond southern Costa Rica, into 
the eastern Pacific Ocean. Precipitation: widely scattered 
moderate to isolated strong is from 13N southward from 76W 
westward.

The wind speeds and the sea heights will diminish gradually in 
the NW Caribbean Sea through Saturday, as high pressure that is 
to the north of the area weakens. Large northerly swell will 
impact the Atlantic Ocean to the east of the Leeward Islands 
through Monday. 

ATLANTIC OCEAN...

A stationary front passes through 32N45W, to 30N52W, 26N60W, to 
22W70W, to the coast of Cuba near 21N76W. Precipitation: widely 
scattered moderate to isolated strong is within 330 nm to the 
north of the front, from 78W eastward. Isolated moderate to 
locally strong is within 150 nm to the south of the front. 

One 1019 mb low pressure center is near 27N29W. A surface trough 
curves away from the low pressure center to 27N29W, to 26N30W, 
and to 27N34W. A second 1019 mb low pressure center is near 
31N28W. A surface trough extends from the low center beyond 
34N29W. Precipitation: widely scattered to scattered moderate 
and isolated strong is within 500 nm to the east of the low 
pressure centers, from 25N northward. Rainshowers are possible 
from 20N northward between 30W and 40W. A surface trough extends 
from the low center beyond 34N29W.

The current stationary front will dissipate overnight. High 
pressure, that is to the north of the front, will support fresh 
to strong NE to E winds across most the region, through 
Saturday. A trough is expected to form to the east of the 
Bahamas during this weekend. It is possible for a weak low 
pressure center to form by early next week. A weak cold front 
will move into the NW waters on Monday. 

$$
mt