000 AXPZ20 KNHC 140240 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 054 UTC Thu May 14 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... The monsoon trough extends from 09N85W to 05.5N100W to low pres near 10N110W to low pres near 07N120W to 07N125W. The ITCZ extends from 07N125W to 07N140W. Scattered moderate isolated strong convection was noted from 02N to 10N between 83W and 105W, from 08N to 12N between 110W and 114W, from 05N to 11N between 118W and 122W, and from 06N to 08N between 125W and 135W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Haze and areas of smoke from agricultural fires in Mexico may reduce visibilities near the coast from the Tehuantepec region to near Cabo Corrientes, and also within the area between Las Marias and Revillagigedo Islands. A cold front extends across the northern Gulf of California across Baja California Norte to near 25.5N120W. A surface ridge is present to the south of the front and west of Baja California and SW Mexico. Gentle to moderate winds northwest to north are over the waters west of Baja California Sur. Moderate to fresh winds prevail W of the Baja California peninsula. Light to gentle winds prevail elsewhere. Seas are in the 6-7 ft range W of Baja California Norte and 4-6 ft elsewhere over the open waters off Mexico. Seas are in the 1-2 ft range over the Gulf of California. A building ridge across the forecast waters W of the Baja California peninsula will tighten the pressure gradient. This will strengthen winds mainly north of Cabo San Lazaro through Fri night. NW swell will bring of 8-9 ft to the waters north of Punta Eugenia by early Thu evening. These wave heights will propagate southeastward between Punta Eugenia and Cabo San Lazaro through Fri night, subsiding to less than 8 ft by late Sat. Winds and wave heights will diminish and subside, respectively, Sun and Sun night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Haze and areas of smoke from agricultural fires in northern Central America may reduce visibilities mainly near the coast from northwestern Nicaragua to Guatemala. Gentle to moderate southeast to south winds are south of the monsoon trough, with light to gentle winds to the north of the monsoon trough. Seas are in the 6-7 ft range between the Galapagos Islands and Ecudor, and 4-6 ft elsewhere. Gentle to moderate winds will continue south of the monsoon trough through Thu before become mainly light to gentle in speeds, with little change through Sat. Waveheights will be mainly 4-6 ft primarily in long-period southwest swell. A new set of long-period southwest swell, with a leading edge period of 19 to 21 seconds, is forecast to reach the waters between Ecuador and the Galapagos Islands by Thu night and into early Fri. The swell is forecast to reach the coast of Central America on Fri. Wave heights are forecast to reach a peak of about 9 ft southwest of the Galapagos Islands Fri and Fri night before starting to subside on Sat and Sat night. REMAINDER OF THE AREA... A 1022 mb high center is analyzed near 29N135W. Light to gentle winds are in the vicinity of the high center. The pressure gradient between the area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to fresh winds N of the ITCZ to near 20N and W of 120W. Gentle to moderate winds prevail elsewhere over the forecast waters. Seas are in the 6-8 ft range n of the ITCZ to near 16N and W of 130W. Seas in the 5-7 ft range elsewhere. Little change in the trade wind flow is expected into the upcoming weekend. A cold front is forecast to approach the far northwest corner of the area on Fri night, then move across the northwest waters this weekend with another set of northwest swell bringing seas of 8-10 ft behind it. A set of cross equatorial long-period south to southwest swell will propagate across the southern waters between Ecuador and 120W tonight. Seas will build to 9-10 ft south of the equator, and to 8-9 ft south of about 10N and west of the Galapagos to about 120W through Fri night before decaying Sat and Sat night. $$ AL