hwlogo.jpg
Active Systems Season Archive Monthly Summary Outlooks Discussions
Satellite Radar Model Animations Sea Surface Temps Origins
 Atlantic Basin Tropical Discussion Atlantic | East Pacific 
 
AXNT20 KNHC 240941 CCB
TWDAT 

Tropical Weather Discussion...Corrected
NWS National Hurricane Center Miami FL 
0605 UTC Thu Sep 24 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  0 UTC surface analysis and satellite imagery through
0710 UTC.

CORRECTED THE CARIBBEAN SEA SECTION AND THE ATLANTIC OCEAN 
SECTION

...SPECIAL FEATURES...

The center of POST-TROPICAL CYCLONE BETA, at 24/0300 UTC, is 
inland in Louisiana, near 31.1N 91.8W. This position is about 70 
km to the E of Alexandria in Louisiana. BETA is moving toward 
the NE, or 055 degrees, 12 miles per hour. The estimated minimum 
central pressure is 1005 mb. The maximum sustained wind speeds 
are 30 miles per hour. The hazards to the public and property 
will be: rainfall, flooding, and possible tornadoes. Please, 
read the latest NHC Public Advisory at 
https://www.nhc.noaa.gov/text/MIATCPAT2.shtml, and the 
Forecast/Advisory at 
https://www.nhc.noaa.gov/text/MIATCMAT2.shtml, for more details. 
Please, also consult bulletins and forecasts from your local 
weather office.

The center of POST-TROPICAL CYCLONE TEDDY, at 24/0300 UTC, is 
near 51.0N 57.3W. TEDDY is moving toward the NNE, or 030 
degrees, 28 knots. The estimated minimum central pressure is 975 
mb. The maximum sustained wind speeds are 45 knots with gusts to 
55 knots. Please, read the latest NHC Public Advisory at: 
https://www.nhc.noaa.gov/text/MIATCPAT5.shtml, and the Forecast/ 
Advisory at https://www.nhc.noaa.gov/text/MIATCMAT5.shtml, for 
more details. Please, also consult bulletins and messages from 
your local weather office.

...TROPICAL WAVES...

An Atlantic Ocean tropical wave is along 28W/31W, from 18N 
southward, moving W 10 to 15 knots. Precipitation: widely 
scattered moderate to isolated strong is from 09N to 15N between 
27W and 36W.

An Atlantic Ocean tropical wave is along 38W/42W, from 18N 
southward, moving W 10 to 15 knots.
Precipitation: isolated moderate is within 300 nm on either side 
of the tropical wave, from 16N southward. 

...MONSOON TROUGH/ITCZ...

The monsoon trough passes through the coastal sections of 
Guinea-Bissau near 12N16W, to 10N20W, and 06N33W. The ITCZ 
continues from 06N33W, to 06N40W, and to 05N51W. Precipitation: 
scattered to numerous strong is from 10N to 14N between 14W and 
18W, in the coastal plains and in the coastal waters. Widely 
scattered moderate to isolated strong is from 06N to 12N between 
18W and 27W. 
Isolated moderate is elsewhere from 12N southward from 60W 
eastward.

GULF OF MEXICO...

The center of POST-TROPICAL CYCLONE BETA, at 24/0300 UTC, is 
inland in Louisiana, near 31.1N 91.8W. This position is about 70 
km to the E of Alexandria in Louisiana. BETA is moving toward 
the NE, or 055 degrees, 12 miles per hour. The estimated minimum 
central pressure is 1005 mb. The maximum sustained wind speeds 
are 30 miles per hour. The hazards to the public and property 
will be: rainfall, flooding, and possible tornadoes. Please, 
read the latest NHC Public Advisory at 
https://www.nhc.noaa.gov/text/MIATCPAT2.shtml, and the 
Forecast/Advisory at 
https://www.nhc.noaa.gov/text/MIATCMAT2.shtml, for more details. 
Please, also consult bulletins and forecasts from your local 
weather office.

The GFS model, for 500 mb and for 700 mb, shows broad cyclonic 
wind flow from 86W westward.
The 1005 mb remnant low pressure center of BETA is in east 
central Louisiana, near 31.1N 91.8W.
A cold front extends from the low pressure center to 26N94W in 
the Gulf of Mexico. A dissipating stationary front extends 
eastward from the 1005 mb low pressure center, toward the 
Florida Panhandle. Precipitation inland: widely scattered 
moderate to isolated strong is within 120 nm to the north of the 
dissipating stationary front. Other precipitation: isolated 
moderate to locally strong is to the east of the line that runs 
from the Florida Panhandle to the coast of Mexico near 20N96W.

An upper level anticyclonic circulation center is in NW Cuba. 
Large-scale upper level anticyclonic wind flow covers much of 
the Gulf of Mexico, the Caribbean Sea from 73W westward, and the 
Atlantic Ocean from 70W westward.

Remnants of an already dissipated stationary front will move 
northward, as a surface trough, across the eastern Gulf of 
Mexico, during the next couple of days. It is possible that a 
weak low pressure center may develop along the trough.

CARIBBEAN SEA...

A stationary front passes through 22N70W in the Atlantic Ocean, 
cutting across Cuba, to 25N86W in the SE Gulf of Mexico. 
Precipitation: isolated moderate to locally strong is from 18N 
to the stationary front between 60W and Hispaniola. Isolated to 
widely scattered moderate and isolated to locally strong is in 
the interior and coastal waters areas of Cuba.

The monsoon trough is along 10N/12N, from 73W in northern 
Colombia beyond Costa Rica, into the eastern Pacific Ocean. The 
GFS model for 250 mb, and the water vapor satellite imagery, 
show a trough that extends from the south central Caribbean Sea, 
toward the SW corner of the Caribbean Sea and central Panama. 
Precipitation: isolated to widely scattered moderate and 
isolated to locally strong is from 15N 
southward from 70W westward. 

The GFS model for 250 mb shows that inverted trough extends from 
the south central Caribbean Sea to Hispaniola. Precipitation: 
widely scattered moderate to isolated strong is to the north of 
the line that runs from 15N77W to the Yucatan Channel.

A stationary front is in the Atlantic Ocean, along 21N70W, to SE 
Cuba. Precipitation: widely scattered moderate to isolated 
strong is within 390 nm to the SE and ESE of the stationary 
front, from 74W in the Caribbean Sea, northeastward to 32N.

Northerly swell, previously generated by Hurricane Teddy and an 
early season cold front in the western Atlantic Ocean, will 
continue through Thursday. Mainly gentle to moderate trade winds 
will dominate the basin through the forecast period, with the 
exception of fresh winds near the coast of Colombia and in the 
Gulf of Venezuela. 

ATLANTIC OCEAN...

An upper level trough passes through 32N60W, to the eastern 
sections of the Dominican Republic.
Precipitation: isolated moderate to locally strong is on the 
eastern side of the trough, from 27N northward. Broken to 
overcast multilayered clouds and possible rainshowers are 
elsewhere in the Atlantic Ocean, from 20N northward, to the west 
of the upper level trough.

A stationary front is along 32N56W to 27N60W and 21N70W, to SE 
Cuba. Precipitation: widely scattered moderate to isolated 
strong is within 390 nm to the SE and ESE of the stationary 
front, from 74W in the Caribbean Sea, northeastward to 32N. 

A surface trough curves from 21N50W to 17N54W to 15N60W. 
Precipitation: isolated moderate is within 180 nm on either side 
of the surface trough. 

A 1018 mb low pressure center is near 29N49W. A surface trough 
extends from the low pressure center to 26N46W. Precipitation: 
isolated moderate to locally strong covers the rest of the 
Atlantic Ocean that is from 20N northward between 43W and the 
precipitation that is associated with the stationary front. 

Swell, previously generated by Hurricane Teddy and a cold front 
that moved through the Atlantic Ocean at the start of the week, 
will continue to subside gradually in the forecast area, into 
Thursday night. Generally gentle to moderate easterly winds can 
be expected into the weekend. 

$$
mt


 
Tropical 3.3
Powered by HAMweather
HW 3.993 | HW Tropical 3.1
HW Image 1.52 | HW API 1.7