000 AXPZ20 KNHC 102134 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Nov 10 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 1800 UTC surface analysis and satellite imagery through 2100 UTC. ...SPECIAL FEATURES... A gale warning remains in effect for the Gulf of Tehuantepec, The pressure gradient between high pressure over eastern Mexico and lower pressure within the monsoon trough over the eastern North Pacific is supporting gale force winds over the Gulf of Tehuantepec. These winds will diminish slightly below gale force Friday, then pulse again to gale force during the overnight hours Friday night. Wind will then pulse to near gale force during the overnight hours through the weekend. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N84W to 1010 mb low pressure near 08N91W to 13N104W to 1009 mb low pressure near 12.5N111W to 10N128W to 09N140W. Scattered moderate isolated strong convection is noted from 09N to 13N between 103W and 110W. Scattered moderate convection is from 08N to 11N between 110W and 119W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See above for more information on the latest Gulf of Tehuantepec gale force gap wind event. A set of long period northwest swell is propagating through the offshore waters off the west coast of the Baja California peninsula, with seas in the 8-11 ft range per a recent Altimeter pass. A second set of northwest swell will reach the waters off Baja California Norte early this weekend, reinforcing the previous swell. This will maintain seas in the 8 to 10 ft range over the open Mexican offshore waters through early next week. Elsewhere seas will remain below 8 ft. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Winds will pulse the next several days over the Gulf of Papagayo...peaking near 15 to 20 kt during the late night and early morning hours, with seas building to 5-6 ft downstream of the Gulf of Papagayo. Elsewhere, light to gentle winds will prevail over the waters north of 10N, with gentle to moderate mainly southwest winds south of 10N. Seas of 4 to 6 ft will prevail across the region through the end of the week in mixed northwest and southwest swell. REMAINDER OF THE AREA... High pressure of 1020 mb is centered near 30N129W. The pressure gradient between this area of high pressure and lower pressure within the monsoon trough is supporting moderate trade winds north of the monsoon trough to 20N as depicted in the latest ASCAT pass. The main story over these waters is the long period northwest swell which is propagating though the waters, with wave heights as high as 14 ft. Seas greater than 8 ft associated to this event are found over much of the waters north of 10N and west of 120W. This swell event will continue to spread southeast over the next couple of days while slowly subsiding. A second set of large, long period northwesterly swell will propagate into the northwest waters tonight behind a cold front. Seas associated to this swell will peak near 16 ft over the far northwest waters late Friday. $$ GR