East Pacific Discussions
Basin Outlook & Discussion
Expires:No;;214994
ABPZ20 KNHC 010504
TWOEP 

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1000 PM PST Thu Nov 30 2017

For the eastern North Pacific...east of 140 degrees west longitude:

Tropical cyclone formation is not expected during the next 5 days.

This is the last regularly scheduled Tropical Weather Outlook of
the 2017 eastern North Pacific hurricane season.  Routine issuance
of the Tropical Weather Outlook will resume on May 15, 2018.  During
the off-season, Special Tropical Weather Outlooks will be issued as
conditions warrant.

$$
Forecaster Beven



						

Expires:No;;537528
AXPZ20 KNHC 251503
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1433 UTC Sun Feb 25 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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

...SPECIAL FEATURE...The Fuego Volcano inland over Southern 
Guatemala near at 14.3N 90.9W is erupting. A plume of volcanic 
ash may reach to the surface across the Pacific waters N of 
13.5N and E of 93W. Low level visibilities may be reduced to 6 
nm or less. Mariners should exercise caution. If mariners 
encounter volcanic ash, they are encouraged to report the 
observation to the National Weather Service by calling 305-229-
4425. Please refer to the East Pacific High Seas Forecast under 
AWIPS/WMO headers HSFEP2/FZPN03 KNHC for more details on the 
ashfall advisory.

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

A surface trough extends from 09N84W to 03N93W to 03N100W to 
01N109W to 02N116W. The ITCZ extends from 02N116W to 08N129W to 
07N140W. Scattered moderate isolated strong convection is noted
from 01N to 03N between 98W and 110W. 
  
...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Pacific waters W of the Baja Peninsula: Strong northerly winds 
will develop along 30N on Mon night into Tue. Large NW swell will
propagate through the waters W of the Baja Peninsula California 
on Tue and Wed. Seas will peak near 14 ft N of 28N Tue night 
into Wed before starting to subside through Thu.

Gulf of Tehuantepec: Winds are forecast to increase over the Gulf
Thu night.
  
Gulf of California: Winds will increase to a strong SW breeze 
along 30N on Mon night ahead of the next cold front sweeping 
across the northern gulf waters on Tue.

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

Gulf of Papagayo: Fresh to locally strong NE winds will continue 
to pulse through and downstream of the Gulf of Papagayo through 
Fri, with seas building to 7 ft.

Gulf of Panama: Mostly moderate nocturnal drainage flow is then 
forecast tonight with fresh winds expected to resume on Mon and 
Tue nights.  

Elsewhere, gentle to moderate offshore flow will prevail N of 
08N while light to gentle SW winds are forecast S of 08N. 

REMAINDER OF THE AREA... 

High pressure of 1044 mb centered NW of the area near 40N148W 
extends a ridge SE to near 20N110W. The pressure gradient 
between this area of high pressure and lower pressure in the 
vicinity of the ITCZ is supporting fresh to strong trades north 
of the ITCZ and west of 120W. The pressure gradient will further 
tighten early this week as the high pressure center shifts 
closer to the forecast area. This will expand areal coverage of 
fresh to strong winds across the forecast waters, with seas 
building to 8 to 13 ft across the Pacific waters from 08N to 24N
W of 129W by early Tue.

Northerly swell will propagate into the northern waters Monday
night, building seas to 8 to 15 ft seas across the Pacific 
waters north of 22N between 118W and 132W by Tue night.
 
$$
AL


						
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