Atlantic Tropical Weather Discussion (Text)

AXNT20 KNHC 251743

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
200 PM EDT Sun Jun 25 2017

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 
1715 UTC.


A tropical wave is in the far east Atlc with the axis extending 
along 23W/24W south of 14N and is moving W at 10 kt. A 90 nm 
wide band of scattered moderate to strong convection is centered 
along a line from 08.5N26.5W to 06.5N26W to 06N23.5W.

A tropical wave is in the central Atlc with the axis extending 
from 16N35W to 03N42W and is moving W at 15-20 kt.  The wave is 
easily identifiable on the latest visible satellite imagery. 
Scattered heavy showers and tstms are located in the area from 
05N to 10N between 34W and 41W.  

A well-defined tropical wave is located over the Lesser Antilles 
with the axis extending along 61W/62W south of 19N and is moving 
W at 15-20 kt.  The wave is in a region of favorable to neutral 
wind shear. Scattered heavy showers and tstms are located from 
11N-17N between 60W-65W.

A tropical wave is located in the central Caribbean with the 
axis extending along 75W south of 20N to inland Colombia and is 
moving west at 15 knots.  Water vapor imagery indicates that the 
wave is in a region of unfavorable wind shear and convection is 


The Monsoon Trough extends from the Africa coast near 12N16W to 
09N23W to 08N27W. The Intertropical Convergence Zone axis begins 
near 08N27W and continues to 09N40W to 03N45W to 03N52W. For 
convection information see the tropical waves section.



A sharp middle/upper level trough is positioned over the NW gulf 
with the axis extending along 93W north of 24N.  It is forecast 
to move east at 15-20 kt across the northern half of the gulf. 
Moderate southerly winds aloft are located on the east side of 
the trough.  A 1019 mb high is located over the northeast gulf 
near 29N84W.  A weak frontal boundary over the southern United 
States drifted southward into the northern Gulf coast earlier 
today with minimal convection either side of the front.


Broad cyclonic turning aloft covers the Caribbean west of about 
76W with broad anticyclonic flow aloft located over the eastern 
half of the Caribbean.  Dense overcast layered clouds with 
numerous heavy showers and scattered tstms are located over 
Panama and continue northward to 13N between 75W and 82W in 
association with the east Pacific monsoon trough.  Refer to the 
tropical waves section for details about the tropical wave over 
the Lesser Antilles. 


Isolated showers are over Hispaniola early this afternoon and 
are expected to continue through Monday.


A well-defined middle/upper level cyclonic circulation is 
located over the west central Atlantic at 27N53W and is forecast 
to drift northwest over the next 48 hours.  Moving downstream a 
middle/upper level trough has its axis along 30W north of 26N 
and is digging to the southeast.  Surface troughs are located 
from 30N50W to 27N53W and from 28N60W to 27N64W.  A 1026 mb high 
is centered near 32N46W.

For additional information please visit 


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Page last modified: Sunday, 25-Jun-2017 17:44:14 UTC