410 
AXPZ20 KNHC 050311
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Wed Sep 5 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 0000 UTC surface analysis and satellite imagery through 
0300 UTC. 

...SPECIAL FEATURES...

Hurricane Olivia centered near 16.7N 120.1W at 0300 UTC, moving 
W at 10 kt. Estimated minimum central pressure is 955 mb. 
Maximum sustained winds are 110 kt with gusts to 135 kt. 
Numerous moderate to strong convection is within 75 nm of 
center, and scattered moderate isolated strong convection is 
noted elsewhere within 150 nm of the center. Olivia is forecast 
to continue westward, then west-northwest, and gradually weaken 
through Fri. See latest NHC forecast/ advisory under AWIPS/WMO 
headers MIATCMEP2/WTPZ22 KNHC for more details.

...TROPICAL WAVES...

The axis of a tropical wave is along 96W N of 06N. Scattered 
moderate isolated strong convection is noted from 10N to 14N 
between 94W and 98W. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough extends from 09N84W to 09N94W to a low pres 
near 11N105W to 08N111W, then resumes SW of Olivia near 14N122W 
to 12N140W. Scattered moderate isolated strong convection is 
from 05N to 10N E of 94W, from 10N to 13N between 100W and 108W, 
and from 09N to 13N between 133W and 138W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

A surface trough will meander between the the Gulf of California 
and the Baja California Peninsula the next few days. A ridge is 
forecast to build across the region Wed as Olivia moves further 
away from the offshore forecast waters. However, swell generated 
by Olivia will continue to propagate across the offshore waters 
through Wed night. 

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

The monsoon trough will linger near 09N/10N during the next few 
days. Winds on both sides of the trough axis will be gentle to 
moderate, and seas of 4 to 6 feet are expected through Wed. Long 
period SW swell will propagate across the region, building seas 
to 8-9 ft by Fri, first between Ecuador and Galapagos Islands, 
then across the pacific waters of Costa Rica and Panama. 

REMAINDER OF THE AREA...   

Please see the Special Features section above for details on 
Hurricane Olivia. 

Hurricane Norman is west of the forecast area. Associated winds 
and seas will continue to diminish over forecast waters through 
Wed. Otherwise, a ridge dominates the forecast waters N of 20N W 
of 120W, with gentle to moderate winds. Seas generated by Olivia 
will continue to propagate mainly across the waters from 10N to 
25N between 110W and 130W during the next couple of days. 
  
$$
Mundell