000 AXPZ20 KNHC 030119 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 049 UTC Mon Apr 3 2017 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 0000 UTC surface analysis and satellite imagery through 0130 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The ITCZ extends from 04N92W to 04N115W to 02N140W. No significant convection is noted with the ITCZ at this time. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... High pressure is centered northwest of the area with a ridge axis that extends southeastward to near 17N105W, supporting gentle to moderate winds off the west coast of the Baja California peninsula, and light to gentle winds elsewhere over the forecast waters. Seas are building to 7 to 9 ft off the west coast of northern Baja California this evening as large northwesterly swell is spreading over these waters. Seas of 6 to 8 ft are offshore southern Baja California. Seas of 3 ft or less are over the Gulf of California, and 4 to 6 ft over the remainder of the Mexico forecast waters. The northwest swell will continue to build seas to between 8 and 12 ft offshore of northern Baja California and between 6 and 9 ft offshore of southern Baja California by Monday evening. The seas will then subside to below 8 ft by Wednesday morning. A round of NW swell to 8 ft will arrive on Friday off northern Baja California. Then, a larger batch of NW swell of 8 to 12 ft will reach these waters next weekend. On Thursday, a cold front will cross the Gulf of Mexico. High pressure building southward behind the cold front is expected produce near gale to gale force winds in the Gulf of Tehuantepec Thursday night and Friday. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate NE to E winds will pulse over the Gulf of Papagayo during the late night and early morning hours through Friday. Otherwise...light to gentle winds and seas of 4 to 7 ft will prevail over the forecast waters through the week. REMAINDER OF THE AREA... High pressure resides over the northern waters. The pressure gradient between this area of high pressure and the ITCZ to the south is supporting moderate to fresh northeast to east trade winds south of 15N. Seas within this area are between 7 and 9 ft as long period northwest swell mixes with shorter period northeasterly wind waves. Seas over the northern waters are between 9 and 13 ft primarily in northwesterly swell. The seas over the northern waters will gradually subside through Wednesday. The seas south of 15N will diminish slightly to 6 to 8 ft by mid week. The next round of NW swell accompanied by a weakening cold front crossing the NW waters will cause seas N of about 25N to build to between 8 and 11 ft Wednesday afternoon through Thursday night. A stronger cold front that will cross the NW waters Friday night will be accompanied by a more significant swell event. Current wave guidance indicates that seas could peak around 13 ft along 30N on Friday night through Saturday. $$ LATTO