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From: COD Weather Processor <ldm@weather.cod.edu>
To: <wx-tropl@lists.illinois.edu>
Subject: Pacific-EN: Tropical Weather Discussion 
Message-ID: <20220120160946.5CBD41C0EEE@weather.cod.edu>
Date: Thu, 20 Jan 2022 16:09:46 +0000
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AXPZ20 KNHC 201607
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Thu Jan 20 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 1200 UTC surface analysis and satellite imagery through
1550 UTC.

...SPECIAL FEATURES...

Gale warning for Pacific waters: A vigorous mid-level low is 
centered near 23N138W, with a mid to upper trough with base 
reaching from the low to near 14N. Divergence to the east of the 
mid to upper trough base continues to support numerous moderate
convection from 21N to 26N between 135W and 137W, and from 18N to
21N between 129W and 133W. The upper pattern is supporting a 
complex low with a mean center near 21N135W, with an estimated 
pressure around 1008 mb. Near gale to gale-force NE to E winds
are within 255 nm NE quadrant of the low center with seas in the
11 to 14 ft range. Winds are forecast to diminish below gale-
force late tonight/early Fri morning when the low is forecast to
be near 24N138W. The low pressure will move west of 140W Fri 
morning, however associated winds and seas will diminish from 
15N to 30N west of 130W through Sat.

Gulf of Tehuantepec gale warning: A cold front moving through the 
western Gulf of Mexico today through Fri will bring gale-force 
winds over the Tehuantepec region Fri morning through Sun. Seas 
will reach as high as 12 ft in the Gulf of Tehuantepec by early 
Sat. Winds and seas will diminish over the Gulf of Tehuantepec 
early next week.

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

The ITCZ extends from 07N106W to 07N121W to beyond 09N140W. 
Scattered moderate convection is noted from 07N to 10N between 
110W and 115W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO

Please see the Special Features section for details about the
gale warning for the Gulf of Tehuantepec.

High pressure west of the Baja California is building, supporting
moderate to occasionally fresh winds off Baja California and Gulf
of California. Gentle to moderate winds persist elsewhere off 
Mexico. Seas are 4 to 6 ft in open waters.

For the forecast, high pressure building west of the Baja 
peninsula will support NW fresh to locally strong winds across 
the Gulf of California through tonight. A cold front will move 
into the northern Gulf of California and the waters off Baja 
California Norte Sat, then stall and dissipate over Baja 
California Sur and the southern Gulf of California Sun into Mon.

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

High pressure north of the area is supporting fresh to strong NE
to E gap winds across the Papagayo region extending to near 90W.
Seas across that area are in the 5 to 6 ft range. Moderate to
fresh northerly winds are in the Gulf of Panama region with seas
to 7 ft. Elsewhere winds are moderate or weaker with seas in the
3 to 5 ft range.

For the forecast, fresh to strong NE to E gap winds will prevail
across the Papagayo region through early next week. Elsewhere, 
winds should remain tranquil for the next several days. Large NW 
to N swell from the Gulf of Tehuantepec will impact the Guatemala
and El Salvador offshore waters Sat night through Sun night. 

REMAINDER OF THE AREA

Please see Special Features for details about the Pacific gale
warning.

A large area of fresh to near gale force NE to E winds are 
within 255 nm NE quadrant of a 1008 mb complex low pressure area
centered near 21N135W, with seas of 12-14 ft. Gentle to moderate
easterly winds and 5 to 7 ft seas are elsewhere across the 
region.

For the forecast, high pressure building north of the 1008 mb low
pressure will support a large area of fresh to strong E winds 
through Fri. By Fri morning, the low will move west 140W and 
weaken substantially. Seas should peak around 16 ft through 
tonight from 15N to 30N between 130W to 140W.

$$
Ramos


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