MarineWaypoints.com
Your guide to Boating, Diving, Fishing, Gear, Sailing, Weather and More!
Home • Articles • Books • Directory • News • Photos • Tides & Weather

Enter your "Place, State", US Zip Code or ICAO:    
For Example: "Boston, MA", 02101, or KBOS

Your Weather
(Options)

National Weather
 Marine Weather
 Marine Data Buoys
 Tides
 Tropical Storms
 National Radar Sites
 Satellite Maps
 Weather Maps
 

 

Travel
 Airport Conditions
 Road Conditions

Info
 Moon Phases
 Time Info
 Weather News

International
 Marine Weather
 Canadian Locations
 International Locations
 U.S. Locations
 Earthquakes
 Weather Agencies


Temperature Conversion
Type a value in one box
and click the Go button.

°F
°C

Wind Speed Calculator
Type a value in one box
and click the Go button.
KM
MPH
Knots

Information
 Weather Books
 Great Circle Calculator
 Sun & Moon Data
 Wind Scales
 Weather Calculators
 Weather Links
 National Hurricane Center
 NOAA Photo Library
 NOAA Weather Radio
 Mt. Washington, NH
 (windiest place in U.S.)

 

Active Tropical Systems Tropical Season Archive Satellite National Hurricane Center
Outlooks Discussions Tropical Summaries  
Tropical Atlantic Discussion  Tropical Eastern Pacific Discussion

Expires:No;;883257
AXPZ20 KNHC 231554
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1544 UTC Tue Jan 23 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
1545 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Strong winds will increase to 
gale force this evening, with a continuous period of sustained 
gale force winds expected over the Gulf until Fri. Winds should 
peak Thu with maximum seas of 17 ft. Propagating N to NE swell 
will cause seas to build to 8 ft or greater as far S as 07N and 
as far W as 110W by Fri morning. Strong winds over the Gulf 
should diminish briefly Sat evening as high pres centered over 
the SE United States shifts E into the western Atlc. Another gale
is possible late in the weekend as a strong cold front crosses 
the western Gulf of Mexico. Please refer to the East Pacific High
Seas Forecast under AWIPS/WMO headers HSFEP2/FZPN03 KNHC for 
more details. 

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

A surface trough extends from 10N74W to 06N80W to 06N95W. The 
ITCZ continues from 06N95W to 06N115W to beyond 07N140W. 
Scattered moderate with isolated strong convection is from 03N 
to 08N between 76W and 80W. Scattered moderate convection is
from 08N to 13N between 127W and 140W. 

...DISCUSSION...
 
OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Gulf of Tehuantepec: Please refer to the special features section
above. 

Gulf of California: Fresh to strong winds are expected across 
the Gulf through tonight before diminishing by Wed evening as 
high pres to the north is weakened by low pres moving into the 
NW United States. Winds will increase once again this weekend as 
high pressure builds to the northwest of the region. 

Decaying NW swell are still maintaining seas of 8 to 10 ft off 
the coast of the Baja California Peninsula. This large swell is 
producing high surf along the coasts and outer reefs of Baja 
California and mainland Mexico. The area of seas greater than 8 
ft will slowly subside through Wed. Then, a fresh set of NW 
swell will propagate into the waters off the coast of Baja 
California Norte Thu night. Seas associated with this swell will 
peak near 12 ft Fri. Meanwhile, fresh to strong NW winds are 
expected off the far NW waters of Baja California Norte late this
week as high pressure builds east toward the region. 

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

Nocturnal winds will pulse to strong each night tonight through 
Fri night as high pres ridges SE from the Gulf of Mexico over 
the NW Caribbean. Elsewhere N of 09N, light to gentle offshore 
flow will prevail. Gentle southerly winds will prevail S of 09N 
for the next few days. 

REMAINDER OF THE AREA...

The pressure gradient between high pressure centered just N of
the 30N and lower pressure in the vicinity of the ITCZ is 
supporting fresh to strong winds from the ITCZ north to 21N and 
west of 115W with peak seas of 12 ft, as confirmed by a pair of 
recent altimeter passes. Combined seas of 12 ft or greater will 
continue to prevail within the region of stronger trade winds 
that are currently from 10N to 18N W of 120W, in a mix of 
dominant long period NW swell and short period NE wind waves. 
Seas 8 ft or greater cover nearly all the the open waters N of 
05N and west of 106W. The area of fresh to strong trades and 12 
ft seas prevailing north of the ITCZ will gradually erode 
westward through early Wed as high pres N of the forecast waters 
weakens, as a cold front crosses the NW waters. High pressure 
building back in behind the cold front will once again cause the 
coverage of the fresh to strong trades to increase early Thu 
through Fri night.
   
$$
Formosa