821 
AXPZ20 KNHC 010815
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
712 UTC Sat Sep 1 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 0600 UTC surface analysis and satellite imagery through
0900 UTC. 

...SPECIAL FEATURES...

Hurricane Norman is centered near 16.3N 123.0W at 01/0900 moving
W or 265 degrees at 7 kt. Estimated minimum central pressure is 
966 mb. Maximum sustained wind speed is 95 kt with gusts to 115
kt. Numerous moderate and scattered strong convection is seen 
within 60 nm NE and 90 nm SW semicircles of center. Numerous 
moderate convection is noted elsewhere from 14N to 17N between 
121.5W and 125W. See latest NHC forecast/advisory under 
AWIPS/WMO headers MIATCMEP1/WTPZ21 KNHC for more details.

Tropical Depression Seventeen-E is located near 14.7N 109.3W at 
01/0900 UTC moving W-NW or 285 degrees at 7 kt. Estimated 
minimum central pressure is 1007 mb. Maximum sustained wind speed
is 30 kt with gusts to 40 KT. Numerous moderate and isolated 
strong convection is noted from 13N to 15N between 109W and 113W.
Scattered to numerous moderate convection is elsewhere from 11N 
to 15N between 109W and 113W. See latest NHC forecast/ advisory 
under AWIPS/WMO headers MIATCMEP2/WTPZ22 KNHC for more details.

...TROPICAL WAVES...

A tropical wave is along 100W N of 06N moving west at 5 to 10 
kt. Convection is limited near the wave axis. 
   
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough axis extends from 10N85W to 09N93W to 13N104W.
Scattered moderate to isolated strong convection is noted from
06N to 09N between 90W and 98W. Similar convection is from 08N 
to 11N between 102W and 106W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

A surface trough is forecast to meander between the Gulf of
California and the Baja California Peninsula through at least
Mon while currently T.D. Seventeen-E is foreacst to remain to 
the south of a weakness in the subtropical ridge. Based on this 
weather pattern, this tropical cyclone is forecast to remain 
close to the offshore forecast waters through at least Mon 
evening.


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

The monsoon trough will linger near 10N 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 Sunday. 

REMAINDER OF THE AREA...   

Another Tropical Depression has formed in the Eastern Pacific
basin named T.D. Seventeen-E. West of this Tropical Depression 
is Hurricane Norman. Please, see Special Features section for
details. Hurricane Miriam is just W of area near 20.1N 141.0W at
01/0300Z but it is still producing winds in the 20 to 30 kt 
range and seas of 10 to 16 ft across the forecast waters from 16N
to 22N W of 137W. Otherwise, a ridge dominates the forecast 
waters N of 20N W of 120W. 

Swell generated by the above mentioned tropical cyclones will
produce seas of 8 ft or greater across much of the waters W of
110W through Sun. 
  
$$
GR