000 AXPZ20 KNHC 190845 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sat Nov 19 2022 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 0600 UTC surface analysis and satellite imagery through 0800 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front will move across the Gulf of Mexico today. Behind the front, strong high pressure will prevail. With this, the fresh to near gale force winds across the Gulf of Tehuantepec will increase to gale force by Sun morning and continue through Tue morning. Seas during the gale event will build to 13 ft. For further details, please see the latest NWS High Seas Forecast issued by the National Hurricane Center at https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 09N123W. The ITCZ continues from 09N123W to 08N140W. Scattered moderate convection is from 08N to 17N between 105W and 134W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Refer to Special Features section above for details on a Gale Warning currently in effect for the Gulf of Tehuantepec. Elsewhere, a weak pressure gradient across the region is supporting gentle to moderate NW winds along with 5 ft seas, except for 3 ft in the Gulf of California. For the forecast, gale-force winds will return on Sun across the Tehuantepec region and continue through Tue. Strong high pressure will build across the Great Basin today, increasing the NW winds across the northern Gulf of California to fresh to strong with building seas to 6 ft. Moderate to fresh NW winds will extend to the entrance of the gulf this evening and prevail through early Tue morning. Gentle to moderate winds are forecast to prevail elsewhere. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh gap winds are ongoing in the Papagayo region with seas to 5 ft. Elsewhere, gentle to moderate S to SW winds are across the Central and South America offshore waters south of the monsoon trough with 3 to 6 ft in SW swell. Gentle variable winds and slight seas prevail elsewhere N of the monsoon trough. For the forecast, moderate to fresh easterly NE to E winds will persist across the Gulf of Papagayo and coast of Nicaragua through early next week, increasing to strong speeds at night. Wave heights will likely build to 7 ft beyond 90 nm off Guatemala through the weekend due to swell generated from gale force gap winds nearby in the Gulf of Tehuantepec. Gentle to moderate winds will persist elsewhere through the forecast period along with slight to moderate seas. REMAINDER OF THE AREA... Broad surface ridging persists north of 15N and W of 110W, supporting moderate to fresh trade winds from 12N to 24N west of 120W, with 7 to 9 ft wave heights. NW swell W of 120W is leading to seas of 8 to 9 ft N of 10N. To the south, SW swell supports seas building to 9 ft along and south of 01S between 98W and 115W. For the forecast, moderate to fresh easterly winds will prevail into early next week across most of the basin as a reinforcing NW swell moves in. Seas will build to 9 ft near the ITCZ west of 125W as high pressure north of the area supports a broad area of fresh trade winds, and mixes with the decaying long-period swell. The SW swell will support seas building to 9 ft along and south of 01S through this evening. $$ ERA