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Latest Eastern Pacific Tropical Report
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Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Sat Nov 27 2021 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 1800 UTC surface analysis and satellite imagery through 2000 UTC.

...SPECIAL FEATURES...
Gulf of Tehuantepec Gale Warning: High pressure is surging southward over eastern Mexico toward the Gulf of Tehuantepec region in the wake of a Gulf of Mexico cold front. The pressure gradient between the high pressure and lower pressure south of the Gulf of Tehuantepec within and near the monsoon trough will induce north to northeast gale-force winds across the Gulf of Tehuantepec once again, starting on Sun night. These conditions winds will continue through Mon night. Seas will peak to near 10 ft through with strongest winds. Please see the latest NWS High Seas Forecast issued by the National Hurricane Center at website://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more information.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
The monsoon trough extends from 08N81W to 09N128W. The ITCZ continues from 09N128W to beyond 09N140W. Scattered moderate convection is noted within 120 nm N of the monsoon trough between 93W-100W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Please see the Special Features section above for details on the next gale-force northerly gap wind event expected in the Gulf of Tehuantepec. Elsewhere, light and variable winds prevail over the Gulf of California. An area of fresh northwest to north winds are over the waters between Cabo Corrientes and Mazatlan. Seas are 4-5 ft offshore of the Baja California Peninsula mainly due to a northwest swell, and 4-6 ft elsewhere west of the Gulf of Tehuantepec area. For the forecast, gale-force winds possible Sun night through Mon night. Moderate to fresh northwest to north winds will develop near Cabo Corrientes tonight through Mon. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR Moderate to fresh northeast winds prevail over and downstream the Gulf of Papagayo. Light to gentle winds are elsewhere north of the monsoon trough. Gentle to moderate winds continue south of the monsoon trough. Seas across the area are in the 3-5 ft range due to a south to southwest swell across the offshore waters. For the forecast, fresh northeast winds will pulse to strong in the Papagayo region beginning tonight. Gentle to moderate winds will remain elsewhere through early next week. REMAINDER OF THE AREA...
High pressure prevails over the northern waters. The pressure gradient between this high pressure and lower pressures in the vicinity of the ITCZ is supporting moderate to fresh northeast to east trades north of the ITCZ to near 22N and west of about 116W. Seas are 6-8 ft across this area. Divergence aloft present to the east of an upper-level low that is observed near 20N119W is helping to sustain an area of scattered showers and isolated thunderstorms from 16N-22N between 109W-119W. Gentle to moderate northeast to east trades are elsewhere over the discussion waters as noted in latest ASCAT data passes. Seas of mainly 4-6 ft are elsewhere. For the forecast, the pressure gradient will weaken through late Sun as a front approaches the far northwest corner of the area. This will allow for the aforementioned fresh winds to diminish in coverage. The 6-8 ft seas will subside slightly to 5-7 ft. Mainly gentle to moderate east trades will continue elsewhere through early next week, except for pockets of fresh trades west of about 129W. After late Sun, the seas of 5-7 ft will continue through early next week. $$ ERA