000 AXPZ20 KNHC 130335 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 335 UTC Sat Jun 13 2020 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. ...TROPICAL WAVES... The axis of a tropical wave is near 82W, moving west near 10 kt. No significant convection is noted near this wave. The axis of a tropical wave is near 97W, moving west around 10 to 15 kt. Scattered moderate convection is from 07N to 13N between 100W and 110W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from near 10N120. The ITCZ continues from 10N120W 11N130W, and from 11N135W to beyond 10N140W.to 1011 mb low pressure near 11N133W to beyond 10N140W. Scattered moderate convection is from 07N to 13N between 100W and 110W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Judging by earlier scatterometer passes and recent land-based observations, winds have diminished over the Gulf of Tehuantepec from the minimal gales active earlier. Strong to near-gale force winds are likely to persist through early next week between high pressure north of the area and lower pressure farther south into the tropics. Farther north, a deep layer trough is observed on satellite imagery moving across California and approaching Baja California Norte, with an associated dissipating front analyzed just west of Guadalupe Island. A weak local trough is likely moving through northern Baja California and the northern Gulf of California currently. This will support moderate to fresh SW to W gap winds into the far northern Gulf of California through tonight. High pressure building in the wake of the dissipated front will tighten the gradient enough to promote fresh to strong NW winds funneling closer to the coast north of 25N Sat night into Sun. NW swell will persist off Baja California Norte into early next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A recent scatterometer satellite pass indicated generally moderate SW flow south of the monsoon trough. Long-period southerly swell persists across the offshore waters this evening with wave heights of 7-8 ft. North of the monsoon trough, winds remain mainly gentle to moderate, with seas in the 5-7 ft range in southerly swell. Cross-equatorial S to SW swell will gradually decay overnight. Fresh winds will pulse across the Papagayo region through early next week. Wave heights will briefly subside this weekend, before another set of southerly swell crosses the region late Sun through Mon, then decaying Tue before the next set arrives later in the week. REMAINDER OF THE AREA... A broad high pressure ridge remains across the forecast waters roughly north of 20N and west of 100W. The pressure gradient between this area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to fresh trades north of the ITCZ to near 10N and west of 120W. Seas over this area are in the 7 to 9 ft range. Gentle to moderate winds prevail N of 20N, with seas in the 5-6 ft range. Little change is expected over the next couple days as a weak trough moves along the ITCZ and supports fresh to locally strong winds and locally higher seas west of 135W. Farther east, moderate to locally fresh southerly flow prevails south of the monsoon trough/ITCZ. Long-period southerly swell still dominates the waters south of 15N and east of 110W, with 7-8 ft seas south of the monsoon trough east of 110W. This swell will gradually decay over the next couple days, with wave heights subsiding below 8 ft by Sat. $$ Christensen