Skip Navigation Links
NOAA NOAA United States Department of Commerce

Parts of the U.S. Government are closed. However, because the information this site provides is necessary to protect life and property, it will be updated and maintained during the Federal Government shutdown. For critical weather information, please visit www.weather.gov. To learn more, see www.commerce.gov.

Eastern North Pacific Tropical Weather Discussion



000
AXPZ20 KNHC 220945
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Tue Jan 22 2019

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.

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

An equatorial surface trough extends from 07N78W to 06N88W to 
04N93W. The ITCZ continues from 04N93W to 03N102W to 04N114W to 
04N140W. Scattered moderate convection is from 04N to 08N 
between 115W and 123W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

The pressure gradient between a broad ridge anchored NW of the 
area and a low pressure system over Colorado is supporting fresh 
to strong NW winds along northern Baja California and the Gulf 
of California.

Gulf of California: Strong NW winds in the Gulf will continue 
through Thursday. The strength, fetch and duration of the winds 
will support wave heights ranging from 8 feet to 9 feet in parts 
of the Gulf by this evening.

Gulf of Tehuantepec: Another gap high wind event is expected to 
commence across the Gulf of Tehuantepec Wed night as a strong 
cold front moves through the western Gulf of Mexico, with winds 
quickly reaching gale force, and continuing through Sat morning.

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

High pressure NE of the area will support strong gap winds 
through the Gulf of Papagayo, and to a lesser extent, the Gulf 
of Panama into the weekend.

REMAINDER OF THE AREA...  

A broad ridge dominates the eastern Pacific Ocean north of 15N 
and west of 110W. The pressure gradient between the ridge and 
lower pressure in the vicinity of the ITCZ will support fresh to 
strong trade winds north of the ITCZ, and mainly west of 125W. A 
surface trough may develop and deepen along 130W by mid-week. 
The GFS global model is most aggressive for a deeper trough and 
higher winds. Other models show trough development, but lighter 
winds associated with the trough.

$$
Mundell