000 AXPZ20 KNHC 170222 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0220 UTC Wed Apr 17 2019 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 0215 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 06N78W to 05N90W. The ITCZ continues from 05N90W to 05N114W to 02S140W. Scattered moderate convection is noted south of 10N between 87W-100W and 110W-121W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gulf of Tehuantepec: Gentle to moderate northerly winds will continue through Thursday. Looking ahead, a cold front will move across the Gulf of Mexico by the end of the week. This will likely support gale-force winds in the Gulf of Tehuantepec Friday through Saturday before conditions subside on Saturday night. Gulf of California: Fresh to strong westerly gap winds will briefly pulse tonight ahead of the tail end of a front, analyzed as a trough that extends across the northern Gulf of California waters. Generally moderate NW breezes will prevail over the area after that through the end of the week, with fresh winds over the central and southern Gulf on Thursday. Looking ahead, another gap wind event could develop over the northern Gulf by Saturday night. Elsewhere, scatterometer data indicated moderate W winds prevail within 75 nm south of Cabo San Lucas. Otherwise, a weak pressure gradient prevails across the area with gentle winds and seas ranging from 4-7 ft. High pressure north of the region will strengthen on Wednesday with moderate to locally fresh winds developing off the Baja California coast. NW swell propagating into the waters west of the Baja peninsula will build seas to 8 ft tonight into Wednesday. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to strong NE to E winds will pulse over the Gulf of Papagayo region through Wednesday. The strongest winds will occur during the overnight and early morning hours. Winds will generally diminish to moderate to fresh speeds Thursday through Saturday, then potentially become strong again by Saturday night. Gulf of Panama: Moderate to fresh winds will prevail across the Gulf of Panama tonight through Wednesday as high pressure build north of the region. Seas will build to 5-7 ft as S to SW swell mixes with NE wind waves. Looking ahead, gentle winds will prevail later in the week with seas subsiding to 3-5 ft. Elsewhere, light to moderate winds will prevail over the waters west of Ecuador through Saturday night. Combined seas between Ecuador and the Galapagos Islands will remain in the 6-8 ft range in S to SW swell through midweek, with highest seas south of the Equator. REMAINDER OF THE AREA... Surface ridge extends ESE across the northern waters toward the Revillagigedo Islands. South of the ridge, fresh to strong trade winds are occurring from 05N-11N west of 131W, with seas ranging between 7-9 ft. A surface trough will develop near 125W tonight, resulting in an enhanced pressure gradient as high pressure persists across the northern waters. This will produce an expanded area of fresh to strong trades generally west of the trough axis with seas building to 11 ft on Wednesday. Associated winds and seas will diminish by Friday as the surface trough weakens and high pressure gradually retreats westward. Elsewhere, a set of NW swell will propagate into the northern waters late tonight through Thursday with seas building to 8 ft west of Baja California Norte. $$ ERA