000 AXPZ20 KNHC 190809 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Apr 19 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 0600 UTC surface analysis and satellite imagery through 0800 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from the Pacific coast of Colombia near 05N77W to 03N81W to low pressure near 06.5N97W to 05N115W. The ITCZ continues from 05N115W to 06N125W to 04N140W. Scattered moderate and isolated strong convection is noted from 02N to 06N between 91W and 94W, from 06N to 10N between 95W and 100W, and S of the ITCZ between 122W and 132W. Scattered moderate convection is noted from 08N to 11N between 103W and 109W, and from 03N to 06N between 134W and 140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge extends from high pressure of 1023 mb centered near 26N132W to the Revillagigedo Islands while a surface trough extends across the Gulf of California. The pressure gradient between these features is supporting moderate to fresh winds offshore of Baja California Sur, with gentle to moderate winds prevailing elsewhere W of the Baja California peninsula. Moderate winds were also noted near and S of Cabo Corrientes. Light to gentle winds prevail elsewhere across the forecast waters. Seas are in the 5-7 ft range off Baja California Norte, and 4-5 ft elsewhere across the open forecast waters. Seas in the 1-2 ft range prevails over the Gulf of California. The high pressure ridge W of Baja California will weaken today, then will build back across the region Mon through Wed strengthening winds off Baja California Norte. Fresh NW swell will propagate SE offshore of Baja California Tue through Thu building combined seas to 7-9 ft. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... The pressure gradient between high pressure N of the area and the equatorial trough is supporting moderate to fresh winds across the Papagayo region. Light to gentle winds prevail elsewhere, except moderate winds across the Gulf of Panama region this morning. Seas are in the 4-6 ft range over and downstream of the Gulf of Papagayo region, and 3-5 ft elsewhere, except across the waters between Colombia and Ecuador where seas are building to 5-7 ft in moderate SW swell. Fairly tranquil marine conditions are anticipated for the remainder of this week. REMAINDER OF THE AREA... A ridge extends from high pressure of 1023 mb centered near 26N132W to the Revillagigedo Islands. The pressure gradient between this area of high pressure and lower pressure in the vicinity of the ITCZ is supporting gentle to moderate winds N of the ITCZ to 20N and W of 120W. Low pressure of 1011 mb is centered near 06.5N97W with gentle to moderate winds in the vicinity of the low. Light to gentle winds prevail elsewhere. The area of high pressure will weaken, which will diminish tradewinds through the early part of the upcoming week. High pressure will then build N of the forecast area, strengthening tradewinds W of 130W. The low will shift W-NW the next few days, with mainly gentle to moderate winds within 120 nm of the center of the low. Light to gentle winds are expected elsewhere for the next several days. Long period NW swell will combine with NE wind waves building seas N of 10N and W of 130W to 8-9 ft Mon. These seas will expand eastward to 120W on Tue and Wed before starting to subside Thu. Northerly swell will propagate into the waters N of 25N and E of 125W, building seas to 8-9 ft Wed into Thu. $$ Lewitsky