000 AXPZ20 KNHC 272151 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Mon Apr 27 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 1800 UTC surface analysis and satellite imagery through 2100 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from the Colombia/Panama border near 07N78W to 06N90W. The ITCZ continues from 06N90W to 07N108W then resumes from 04N114W to 08N130W then resumes from 07N133W to 06N140W. Scattered moderate and isolated strong convection is from 06N to 10N between 80W and 88W, within 15N103W to 14N92W to 09N95W to 03N95W to 03N102W to 09N103W to 15N103W, within 12N109W to 07N107W to 02N110W to 02N120W to 08N120W to 12N109W, and from 06N to 10N between 128W and 134W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Areas of dense to moderate smoke originating from wildfires over Mexico and Central America were evident in high resolution satellite imagery this afternoon, however coastal observations indicate that any significant restrictions to visibility are confined to inland locations at this time. An afternoon scatterometer pass indicated strong to near gale force N to NE winds in the Tehuantepec region where seas are also likely up to 8 ft. These winds were ushered in by a cold front N of the area in the SW Gulf of Mexico, however the front in that area is weakening and the winds in the Tehuantepec region are diminishing. 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 will move into the waters off Baja California Norte early in the week, causing seas N of 29N and E of 125W to build to between 6 and 8 ft during this time frame. 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 in the Papagayo region for the next several days. 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 through the week and into the weekend. REMAINDER OF THE AREA... The remnant low of T.D. One-E has opened up to a trough per recent scatterometer data, which is noted from 19N123W to 14N122W with no significant convection. Associated winds are 20 kt or less, however a small area of remnant seas to 8 ft remains and will decay into the overnight hours. Otherwise, high pressure prevails over the northern waters, with gentle to moderate winds, locally fresh, and 5 to 8 ft seas. A set of NW swell will breach southeast of 30N140W Wed, decaying by early Thu. A different set of fresh northerly swell will spread southward into the area from off of southern California early this week, decaying by mid-week, then returning by the end of the week. Otherwise, little change in marine conditions is expected through the remainder of the week and into the weekend as the high pressure continues to dominate, occasionally shifting east due to approaching, yet decaying frontal boundaries W of 140W, before becoming re-established. $$ Lewitsky