690 AXPZ20 KNHC 221601 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Fri May 22 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 1200 UTC surface analysis and satellite imagery through 1530 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N77W to 10N95W to 12N106W to low pres near 11N112W to low pres near 11N118W TO LOW PRES NEAR 10N129W continuing on to 08N135W. The ITCZ continues from 08N135W to beyond 08N140W. Scattered moderate and isolated strong convection is noted from 03N TO 08 between the coast of Colombia and 83W...from 04.5N TO 09.5N between 89W and 106W... from 07N TO 12.5N between 108W and 116W...and from 08N TO 12N between 118W and 130W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge extends from 1028 mb high pressure near 33N137W southeastward to the Revillagigedo Islands to 16N105W. Moderate NW-N winds and 5-8 ft seas prevail N of 20N, except southerly winds and seas 3 ft or less in the Gulf of California. Gentle to moderate onshore winds prevail S of 20N along with 4-6 ft seas. Agricultural fires in Mexico continue to produce haze from near the Tehuantepec region all the way to NW Mexico, while moderate smoke reducing visibilities to around 3-5 nm were reported over the coastal waters south of Cabo Corrientes this morning. A trough moving through Baja California is expected to produce strong SW gap winds into the northern Gulf of California this evening early Sat. Otherwise, little change in marine conditions is expected through the weekend into early next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Some patchy haze due to agricultural fires will remain possible for the next few days across the nearshore coastal waters due to ongoing agricultural fires, mainly from El Salvador westward. Light to gentle winds persist off Central America, with gentle to moderate SW winds farther south off Colombia and Ecuador. Wave heights are in the 4-6 ft due to SW swell. Scattered showers and isolated thunderstorms continue this morning along the coasts of Central American from 12.5N to 15N east of 94.5W. An active monsoon trough will lead to moderate SW winds along with scattered showers and thunderstorms over the offshore waters of southern Central America and Colombia. Elsewhere, generally gentle to moderate breezes will continue through the next few days. REMAINDER OF THE AREA... A ridge extends from 33N137W to across the Revillagigedo Islands to 16N105W. Mainly moderate trades prevail, locally fresh, while corresponding seas are mainly 4-7 ft, locally to 8 ft near several weak low pressure areas along the monsoon trough. Fresh to strong northerly winds offshore of southern California will send fresh northerly swell of 8-9 ft into the waters roughly N of 27N and E of 125W during this evening through Sun, decaying thereafter. Southerly flow south of the monsoon trough may strengthen to moderate to fresh late this weekend into early next week allowing for a growing area of 8-10 ft seas early next week. Meanwhile, the ridge will breakdown and shift W early next week as weak troughing develops across the N central waters. Winds W of the troughing may increase to moderate to fresh helping to build seas to around 8 ft early next week. $$ Stripling