000
AXNT20 KNHC 170512
TWDAT 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
112 AM EDT Mon Jul 17 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 0000 UTC surface analysis and satellite imagery through 
0500 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is near 16N28W to 07N32W. The wave is
moving westward about 10-15 kt. 

The axis of a tropical wave is near 20N51W to 06N52W. The wave is
moving westward near 15 kt. 

The axis of a tropical wave is near 19N81W to 07N80W. The wave is
moving westward near 15 kt. 

The axis of a tropical wave is moving across the Yucatan peninsula.
The wave is moving westward near 15 kt. 

...ITCZ/MONSOON TROUGH...

The monsoon trough extends from 14N17W to 12N24W to 11N30W to
09N37W to low pres near 10.5N48W. The ITCZ extends from 10N48W to
06N54W. Scattered moderate convection was noted within 30 nm north
and 60 nm south of the monsoon trough between 31W and 35W.
Scattered moderate isolated strong convection was noted within 30
nm north and 90 nm south of the monsoon trough between 35W and
42W. Scattered moderate isolated strong convection was noted
within 90 nm northwest semicircle of the low. 
 
...DISCUSSION...

GULF OF MEXICO...

A weak pressure pattern prevails over the Gulf of Mexico. As a
result benign marine conditions prevail over the area. Winds are 
generally in the light to gentle range with seas of 1-2 ft. High
pressure will build across the region early this week and prevail
through the remainder of the week. 

CARIBBEAN SEA...

A tropical wave is moving through the western Caribbean, helping
enhance convection over this area. A weak pressure pattern
prevails over the forecast area producing moderate to fresh winds
prevail over the eastern and central Caribbean, and light to 
gentle winds over the western Caribbean. High pressure will build
north of the area early this week, which will tighten the pressure
gradient and bring an increase to the tradewinds across the area.  

...HISPANIOLA...

Active diurnal convection has dissipated over the island. Expect
another round of afternoon thunderstorms to develop and last into
the early evening hours today. 

ATLANTIC OCEAN...

Central Atlantic high pressure centered near 35N37W extends a ridge
westward to the southeast United States. As typical for this time
of year, tropical waves are moving through the tropical Atlantic 
waters. Low pressure has developed within the monsoon trough near 
10.5N48W. Active convection associated to this low is noted within
90 nm northwest semicircle of the low as noted in the ITCZ/ 
monsoon trough section. 

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

$$
AL