000 AXPZ20 KNHC 190923 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Mon Apr 19 2021 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 0900 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from the Costa Rica coast near Panama near 08N82W to 09N97W to 05N117W. The ITCZ continues from 05N117W to 05N130W to 05N140W. Isolated convection is within 170 nm of the monsoon trough E of 87W. Scattered moderate to isolated strong convection is from 03N to 11N between 91W to 111W. Scattered moderate convection is from 03N to 07N between 121W to 140W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface high pressure is anchored by a 1035 mb high near 35N138W and lower pressure continues along western Mexico and the Gulf of California. The pressure gradient between these two features continue to support moderate to locally fresh NW winds across the Baja California offshore waters with seas to 6 ft over the next few days. Winds are expected to decrease to gentle to moderate NW winds by Wed. Seas will increase briefly to 8 to 9 ft NW of Punta Eugenia by early Wed as the tail of a cold front moves across the northern Baja peninsula. Moderate to locally fresh winds can be expected in the Gulf of California N of 27N through tonight with light to gentle variable prevailing across the Gulf on Tue. A cold front will push south across the Gulf on Wed. Ahead of the front, winds in the northern Gulf are forecast to shift S to SW and increase to fresh to strong by Tue evening. These strong winds will then continue through Thu with seas building to 5 ft. Fresh to strong winds that have pulsed overnight will diminish by this morning with the 6 to 7 ft seas subsiding by this afternoon. Fresh to strong northerly winds will occur again on Tue night and Wed night with seas building 6 to 7 ft. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Fresh to strong winds will briefly pulse across the Gulf of Papagayo early Tue morning with seas 4 to 5 ft. Fresh to strong winds will then pulse nightly across the area on Wed night through Fri night. Seas will be 4 to 7 ft, building to 8 ft by Thu night. Across the rest of the area, light to gentle variable winds will prevail with 4 to 6 ft seas through midweek. Long- period SW swell will increase across the Equatorial offshores this evening and will support building seas to 8 ft by midweek. The swell will reach the Central America offshores by Tue and will continue into the end of the week. Widespread convection will continue to impact the Central America, Colombia and Galapagos Islands offshores through Tue night. REMAINDER OF THE AREA... The pressure gradient between a 1030 mb high near 35N137W and lower pressures across the ITCZ supports fresh to locally strong NE to E winds between the ITCZ and 27N, W of 125W with seas to 8 to 9 ft. Gentle to moderate NE to E trade winds with seas to 7 ft are elsewhere between the ITCZ/monsoon trough to 20N between 120W and 130W. The pressure gradient between the ridge and lower pressure along the Gulf of California is also supporting moderate to fresh N to NE winds N of 20N between 120W and 140W. The far NW forecast waters continue to have light to gentle variable winds. The high pressure will continue to build through early next week, supporting fresh to locally strong winds through Tue mainly W of 125W. Seas in this region are expected to build up to 9 ft, enhanced by mixed SW and NW swell. $$ AReinhart