000
AXPZ20 KNHC 302023
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2110 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 1800 UTC surface analysis and satellite imagery through
2100 UTC.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough extends from 09N78W to 11N95W to 11N114W. The
ITCZ continues from 11N114W to low pressure near 08N132W to
07N140W. Scattered moderate isolated strong convection is noted 
from 02N to 08N E of 84W. Scattered moderate convection from 
04N to 07N between 78W and 80W. Scattered moderate convection 
from 10N to 12N between 103W and 107W. Scattered moderate from 
06N to 08N between 127W and 140W. 

...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 through the evening.

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. 
  
$$
Christensen