000 AXPZ20 KNHC 292020 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2020 UTC Wed Apr 29 2020 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 1800 UTC surface analysis and satellite imagery through 2000 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 06N77W to 05N80W to 07N90W to 07N104W. The ITCZ extends from 07N104W to 04N110W to 09N122W, then continues from 04N129W to 05N140W. Scattered moderate isolated strong convection is occurring within 120 nm of a trough that extends from 12N118W to 04N129W. Scattered moderate convection is noted within 120 nm of the trough east of 102W, and within 120 nm of the ITCZ west of 130W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... High pressure centered near 32N135W extends a ridge SE near the Revillagigedo Islands and offshore of southern Mexico. Recent scatterometer passes show light to gentle winds across most of the offshore waters. Moderate winds are noted south of Los Cabos and near the coast of Oaxaca. Seas are generally 4-6 ft off Baja California Sur per earlier scatterometer data, likely in NW swell. Earlier satellite analysis indicates smoke from wildfires in Mexico has spread over the offshore waters south of Cabo Corrientes. This could reduce visibility to 3-5 nm at times, especially in the nearshore waters. The offshore high pressure ridge will persist through early next week. Near gale force northerly winds are expected in the Tehuantepec region late Thu into Fri as high pressure builds behind a Gulf of Mexico cold front. NW swell will build the seas west of Baja California Thu night through early Sat. Winds and seas may increase offshore of Baja California Norte Sun night through Mon night as high pressure builds NW of the area. Smoke from inland fires may reduce visibility at times in the waters off southern Mexico. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Scatterometer data from this morning shows fresh winds in the Papagayo region. Moderate to locally fresh winds are noted near ongoing convection associated with a trough that extends across the waters off Colombia, Panama, and Costa Rica. Elsewhere, light to moderate SE winds are found between Ecuador and the Galapagos Islands. Earlier satellite analysis indicates smoke from fires in Central America has spread offshore of Guatemala and El Salvador. This could reduce visibility to 3-5 nm at times, especially in the nearshore waters. Fresh to occasionally strong gap winds will pulse over the Papagayo region through Mon. Smoke from fires in Central America may reduce visibility at times in the waters off Guatemala and El Salvador. Elsewhere, relatively tranquil marine conditions will persist through early next week. REMAINDER OF THE AREA... A ridge extends southward across the northern waters from high pressure centered near 32N135W. Recent scatterometer data shows gentle to moderate trades south of the ridge generally west of 120W, with fresh winds noted near a trough that extends from 12N118W to 04N129W. Earlier altimeter data indicated seas were running 5-7 ft within these trades, possibly to 8 ft near the trough. A set of NW swell over the far NW portion is producing 8-9 ft seas that will propagate SE through tonight before decaying early Thu. High pressure will persist across the northern waters through early next week. NW swell will impact the waters west of Baja California beginning late Thu, and build seas to 8-10 ft east of 125W by Fri morning. Looking ahead, winds and seas may increase west of Baja California Norte Sun night through Mon night as high pressure builds NW of the region. $$ B Reinhart