000
AXPZ20 KNHC 301500
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1301 UTC Fri Nov 30 2018

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 140W. The following information is
based on satellite imagery, weather observations, radar, and
meteorological analysis.

Based on 1200 UTC surface analysis and satellite imagery through
1500 UTC.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough extends from 09N84W to 11N97W to 11N113W to
09N122W. The ITCZ continues from 09N122W to 07N126W to 09N130W to
beyond 08N140W. Scattered moderate isolated strong convection is
noted from 02N to 08N E of 84W. Scattered moderate isolated
strong convection is noted within 90 nm either side of the 
monsoon trough between 104W and 115W. Scattered moderate isolated
strong convection is noted within 90 nm either side of the ITCZ 
W of 134W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

Gulf of California: A cold front moving across the northern gulf
waters has helped for fresh to strong westerly winds north of the
front. Winds will diminish tonight. 

Gulf of Tehuantepec...A cold front will move across the Gulf of
Mexico early next week and help usher in the next Gulf of
Tehuantepec gale force gap wind event. Winds over the Gulf of
Tehuantepec will strengthen Tuesday morning as the cold front 
reaches the Bay of Campeche Tuesday morning, and winds behind 
the front funnel through the Chivela pass into the Gulf of 
Tehuantepec. Winds will further increase to gale force Tuesday
night, and increase further to 45 kt gales on Wed.

Elsewhere:  Long period NW swell is mixing with long period 
cross-equatorial southerly swell, resulting to combined seas of 
8 to 15 ft across the open Pacific waters N of 13N and W of 
100W. The highest seas are N of 28N in predominately NW swell. 
Seas of 12 ft or greater are expected to reach as far S as 23N 
tonight before beginning to subside. Seas will gradually subside
to less than 8 ft by late Mon morning. 

OFFSHORE WATERS WITHIN 250 NM OF 
CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... 

Gulf of Papagayo...Nocturnal pulses of fresh NE winds are 
expected through the middle of next week. 

Elsewhere: The monsoon trough which will meander between 08N and
11N. Light to locally moderate northerly flow, and 3 to 5 ft 
seas, is forecast N of the monsoon trough, with moderate 
southwesterly monsoonal flow, and 4 to 6 ft seas, S of the 
monsoon trough through the upcoming weekend. 

REMAINDER OF THE AREA...  

Long period NW swell is mixing with long period cross- equatorial
southerly swell, resulting in combined seas of 8 to 18 ft across
much the discussion waters W of 100W. The NW swell is building 
the highest seas N of 27N. These seas will subside from the W to 
less than 8 ft by late Mon morning across the waters W of 125W. 

Fresh to strong southerly winds will develop NW of a line from
30N137W to 28N140W by Sun morning ahead of the next cold front
which will move into the NW waters Mon. This front will usher in
a new set of NW swell into the forecast waters, building seas to
near 20 ft N of 28N and W of 135W Tue afternoon. 
  
$$
AL