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Eastern North Pacific Tropical Weather Discussion

AXPZ20 KNHC 030854

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Mon Oct 3 2022

Tropical Weather Discussion for the eastern Pacific Ocean from
03.4S to 30N, east of 120W including the Gulf of California, and
from the Equator to 30N, between 120W and 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
0840 UTC.


Hurricane Orlene is centered near 22.1N 106.4W at 03/0900 UTC
moving N at 8 kt. Estimated minimum central pressure is 976 mb.
Maximum sustained wind speed is 85 kt with gusts to 105 kt. 
Seas are peaking near 24 ft. Numerous moderate and scattered 
strong convection is noted within 60 nm of the center of Orlene. 
Scattered moderate isolated strong convection is elsewhere from 
19N to 24N between 104W and 108W. A dangerous storm surge is 
likely to cause flooding along the coast of mainland Mexico in 
the warning area in regions of onshore winds. Heavy rainfall 
from Orlene is expected to lead to flash flooding, as well as 
possible landslides in areas of rugged terrain of southwest 
Mexico through Tuesday. Large swells generated by Orlene are 
affecting the west coast of Mexico and will spread northward to 
the southern portion of the Baja California peninsula and the 
Gulf of California over the next day. These swells will cause 
large breaking waves producing life- threatening surf and rip 
current conditions. Please read the latest High Seas Forecast 
issued by the National Hurricane Center at website and the latest NHC 
Forecast/Advisory and Public Advisory at for 
more details. 

Showers and thunderstorms continue to become better organized in
association with an area of low pressure located several hundred
miles south-southwest of the southern tip of the Baja California
peninsula. Satellite imagery also indicates that the surface 
circulation has become better defined. If these trends continue, 
a tropical depression is likely to form Monday or Monday night 
while the system moves slowly northward during the next couple of
days. There is a high probability for tropical cyclone development
in the next couple of days. Please see the latest eastern north 
Pacific Tropical Weather Outlook at for more 


The monsoon trough extends from 10N86W to 10N97W to 15N112W to 
12N122W to 12N140W. Scattered moderate convection is noted from 
09N to 15N between 90W and 100W. Scattered moderate isolated 
strong convection is noted from 11N to 16N between 111W and 
115W. Scattered moderate convection is noted from 09N to 17N 
between 120W and 126W, and from 08N to 10N between 128W and 


Please read the Special Features above for details on Hurricane  

Elsewhere, in the Gulf of Tehuantepec, an ongoing gap wind event
is supporting fresh to strong winds and seas to 8 ft. Gentle to 
moderate NW winds prevail over the offshore waters off the Baja 
California peninsula. Light to gentle winds are in the Gulf of 
California as well as the remainder open waters off Mexico. Seas 
are in the 4-6 ft range over the open waters off Mexico, and 3 ft
or less over the Gulf of California.

For the forecast, winds will diminish in the entrance of the Gulf
of California and along the Baja offshore waters by Tue morning
as conditions generated by Orlene improve. Otherwise, fresh to 
strong winds in the Tehuantepec region will continue through Tue 
before diminishing slightly through Thu. Winds will once again 
increase to fresh to strong Thu night. 


Gentle to locally moderate S to SW winds are south of the 
monsoon trough while light to gentle NE to E winds are north of 
the monsoon trough. Seas are in the 6-8 ft range between the 
Galapagos and Ecuador, and 4-6 ft elsewhere.

For the forecast, gentle winds S of the monsoon trough will 
increase slightly through midweek. Moderate to fresh winds will 
pulse each night in the Papagayo region starting tonight. SW
swell bringing seas in the 6-8 ft range between the Galapagos 
and Ecuador will spread northward through the week.


Please see above for an area of disturbed weather several 
hundred miles south-southwest of the southern tip of the Baja 
California peninsula with a high chance for tropical cyclone 

Elsewhere, surface ridging prevails N of 20N, anchored by 1020 mb
high pressure centered near 29N131W. Light to gentle winds are 
in the vicinity of the high center. Gentle to moderate winds are 
elsewhere over the discussion waters. Seas are in the 8-10 ft 
range in NW swell over the far NW waters, and in the 4-6 ft 
range elsewhere north of the monsoon trough. Seas of 6-9 ft
prevail south of the monsoon trough. 

For the forecast, high pressure will prevail across the northern
waters with little change to the wind speeds. A set of NW swell 
supporting seas of 8 ft or greater over the far NW waters will
continue today before starting to subside.