720 
AXPZ20 KNHC 300325
TWDEP 

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

...SPECIAL FEATURES...

Hurricane Norman centered near 17.9N 116.5W at 0300 UTC, moving 
W at 8 kt. Estimated minimum central pressure is 983 mb. Maximum 
sustained winds are 75 kt with gusts to 90 kt. Numerous moderate 
to strong convection is within 120 nm of the center. Scattered 
moderate convection elsewhere within 180 nm N and 270 nm S of 
the center. See latest NHC forecast/advisory under AWIPS/WMO 
headers MIATCMEP1/WTPZ21 KNHC for more details.

Hurricane Miriam centered west of the area near 14.4N 140.6W at 
0300 UTC, moving W at 7 kt. Estimated minimum central pressure 
is 988 mb. Maximum sustained winds are 65 kt with gusts to 80 
kt. Numerous moderate to strong convection is within 60 nm of 
the center. Scattered moderate convection elsewhere within 180 
nm of the center. See latest CPHC forecast/advisory under 
AWIPS/WMO headers TCMCP3/WTPA23 PHFO for more details.

...TROPICAL WAVES...

A tropical wave axis north of 05N along 91W is moving westward 
at 15 kt. The wave is producing minimal convection over forecast 
waters at this time. 

A tropical wave axis from 06N to 16N along 106W is moving 
westward at 10 to 15 kt. Scattered moderate isolated strong 
convection is from 10N to 16N between 100W and 110W. 
   
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough axis extends from 09N84W to 08N90W to 
17N112W, then resumes west of Hurricane Norman near 15N120W to 
12N135W. Aside from convection associated with tropical waves, 
scattered moderate convection is from 04N to 08N east of 88W, 
and within 30 nm of the trough axis between 120W and 127W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

A ridge extends over the discussion waters from 30N130W to near 
21N112W. The pressure gradient between the high and a trough 
across the Baja California Peninsula will support moderate to 
occasionally fresh NW winds along the coast of Baja California 
Norte through Fri, with seas generally between 4 to 6 ft. Winds 
will diminish on Sat as the pressure gradient weakens. 
Elsewhere, gentle to moderate winds will prevail in offshore 
waters of Mexico the next several days with seas of 3 to 6 ft. 

Low pressure over northern Mexico will support light to gentle 
southerly flow over the Gulf of California the remainder of the 
week.

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

The monsoon trough will linger along 09N/10N during the next few
days. Winds on both sides of the trough axis will generally be 
light to moderate. Seas of 4 to 6 feet can be expected. 

REMAINDER OF THE AREA...   

Please see the Special Features section for information on
Hurricane Miriam and Hurricane Norman.

Elsewhere, the pressure gradient between ridging across the 
waters N of 20N and the monsoon trough will support moderate to 
locally fresh trades and 4 to 7 ft seas in mixed swell N of the 
monsoon trough west of 120W through the remainder of the week, 
with seas generally between 5 and 7 ft. South of the monsoon 
trough, expect moderate to winds with seas of 5 to 7 ft. 
  
$$
Mundell