000 AXPZ20 KNHC 260317 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Mon Dec 26 2016 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 0300 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N78W to 09N86W to 06N95W. The ITCZ axis continues from 06N95W to 07N106W to 07N140W. No large areas of significant convection are noted. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gulf of Tehuantepec: Northerly winds will increase to fresh overnight. High pressure building north of the area will tighten the pressure gradient across the Isthmus of Tehuantepec, and gap winds will strengthen Monday night and Tuesday, then further increase to gale force by Tuesday evening, Gale winds are likely to continue into the New Years weekend. The persistent strong gap winds will support a plume of 8 to 14 ft seas extending several hundred miles from shore beginning Tuesday night. Gulf of California: Strong northwest winds will develop late Monday as high pressure builds north of the area over the Great Basin. Fresh to locally strong northwest winds will extend down the length of the Gulf of California through late in the week. Northwesterly swell with 8 to 11 ft seas off the coast of Baja California Norte will subside below 8 ft Monday as it propagates southward. A cold front will approach the Baja California waters early in the week, but stall west of the area. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh gap winds will prevail in the Gulf of Papagayo through Monday morning. Building high pressure north of the area will tighten the pressure gradient over the area, and strengthen Papagayo winds Monday night into Tuesday. Elsewhere across the region, winds will remain 20 kt or less, with seas below 8 ft through early next week. Moderate northerly winds are possible in the Gulf of Panama during overnight and early morning hours. REMAINDER OF THE AREA... A cold front crossing 30N west of 125W will be accompanied by strong westerly winds. 8 to 12 ft seas associated with the front will propagate into the area, covering the area north of 25N and west of 120W by late Monday. Low pressure along the front will drift south of 30N Monday night, then stall and weaken to a trough near 27N124W by late Tuesday. The gradient between this low pressure/trough and strong high pressure to the northwest will allow a new round of strong northerly winds with 10 to 13 ft seas over the area from 26N to 30N between 125W and 135W through mid week. High pressure building behind the front will support fresh to strong trades from 10N to 20N and west of 125W into mid week. $$ Mundell