000 AXPZ20 KNHC 280351 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 252 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 0000 UTC surface analysis and satellite imagery through 0240 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from northern Colombia near 10N74W to 05.5N87W to 06N99W. The ITCZ continues in segments from 06N99W to 08.5N108W, from 06N114W to 05N120W to 06N130W and from 06N134W 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 within 240 nm either side of a line from 06N91W to 10N104W, within an area bounded by 11N107W to 02N110W to 00N123W to 04N125W to 12N112W to 11N107W and from 07N to 09N between 128W AND 133W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Areas of dense to moderate smoke originating from wildfires in Mexico and Central America were evident in high resolution satellite imagery earlier this afternoon. However, coastal observations and onshore winds indicate that any significant restrictions to visibility are confined to inland locations at this time. Winds over the Tehuantepec region have diminished. Another round of strong gap winds could affect the Tehuantepec region Thu night through early Fri. A set of NW swell will impact the waters offshore of Baja California Norte Thu night through Sat night. Otherwise, fairly 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 entering the waters off Baja California Norte early in the week. This will cause seas N of 28N and E of 125W to build to between 6 and 8 ft tonight through Tue night. A 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 breach southeast of 30N140W Wed, decaying by early Thu. A different set of fresh N swell will spread southward into the area from the waters just W of southern California early this week and decay by mid-week. More N 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 is occasionally being 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