000 AXPZ20 KNHC 280819 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 752 UTC Tue Apr 28 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 0600 UTC surface analysis and satellite imagery through 0800 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from low pres 1009 mb over northern Colombia near 09N74W to 05.5N83W to 06.5N87.5W. The ITCZ continues in segments from 06.5N87W to 05N102W to 07N111W, from 05N115W to 04N123W to 06N132W and from 06.5N135W to beyond 05.5N140W. Surface troughs extending from 03N113W to 10N110W and from 05N133W to 10N132W split the ITCZ. Scattered moderate and isolated strong convection is occurring from 02N to 07N between 92W and 97W and within 240 nm either side of a line from 10N109W to 00N123W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Areas of dense to moderate smoke originating from wildfires in Mexico and Central America were evident yesterday in high resolution visible satellite imagery. However, coastal observations and onshore winds suggest that any significant restrictions to visibility are currently confined to inland locations. The next round of strong gap winds could affect the Tehuantepec region Thu night and Fri morning. A set of NW swell will impact the waters offshore of Baja California Norte Thu night through Sat night. Otherwise, tranquil marine conditions will prevail through Sat night. Gentle to moderate winds generally prevail over the forecast waters outside of the Tehuantepec region. Seas range between 5 and 7 ft west of Baja California Norte and 4 to 6 ft elsewhere. Inside the Gulf of California seas are in the 1 to 3 ft range. Weak surface troughing will remain near the Baja Peninsula through the end of the week. A high pressure ridge will remain in place from roughly 32N133W to near the Revillagigedo Islands through Fri. NW swell are currently entering the waters W of Baja California Norte. This will cause seas N of 28N and E of 125W to build to between 6 and 8 ft today through Tue night. A more significant round of NW to N swell will move into the waters off Baja California Norte Thu through Sat night, causing seas N of 24N and E of 125W to build to between 8 and 10 ft. Otherwise fairly tranquil marine conditions will prevail this week into the weekend. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong gap winds will continue to pulse over the Papagayo region through the end of this week. A weak pressure pattern is resulting in mostly light to gentle winds across the remainder of the forecast waters. Seas are mainly 3 to 5 ft in a mix of long period S and NW swell. Fairly tranquil marine conditions outside of the Papagayo region will persist for the remainder of this week. REMAINDER OF THE AREA... High pressure prevailing over the northern waters is generally supporting gentle to moderate winds over the waters from 05N to 20N W of 120W. Where winds are moderate they are locally fresh. Seas in this region are running between 5 and 8 feet. A set of NW swell will cross to the SE of 30N140W Wed, then decay by early Thu. A different set of fresh NW swell will spread southward into the area from the waters just W of southern California early this week and decay by mid-week. More NW swell will head S into the waters adjacent to Baja California Norte by the end of the week. Otherwise, little change in marine conditions is expected through the remainder of the week and into this weekend as high pressure continues to dominate. The high will be nudged E by approaching, yet decaying frontal boundaries W of 140W. However, the high is expected to generally remain centered near 32N132W through Fri. $$ CAM