000 AXPZ20 KNHC 092109 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2040 UTC Sat May 9 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 Panama near 08N77W to 08N120W. The ITCZ extends from there to beyond 07N140W. Scattered moderate isolated strong convection is noted from 05N to 08W east of 88W and from 02N to 11N between 94W and 115W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak ridge of high pressure extends from 30N128W through the Revillagigedo Islands to 14N96W. As a result, winds this afternoonoff of Mexico and over the Gulf of California were only moderate breeze or weaker as seen in the scatterometer passes. High pressure building over the Gulf of Mexico will promote strong to near gale N gap winds across the Tehuantepec region late tonight and continue through Mon night. Peak seas should reach 10-12 ft due to N wind waves and SW swell. Elsewhere tranquil conditions are expected across the area until Thu, when building high pressure over the Pacific may strengthen NW winds west of Baja California. Long period SW swell will impact the Pacific waters of Mexico through Monday. Peak seas observed by the altimeter earlier today reach up to 9 ft south 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. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A flat pressure gradient over the equatorial and Central American offshore waters is forcing winds of only fresh breeze or weaker as observed in the scatterometer winds earlier today. Winds will remain tranquil over the waters during the next several days. Large, long period SW swell will continue to impact the equatorial and Central American offshore waters through the weekend before gradually fading. REMAINDER OF THE AREA... A weak ridge of high pressure extends from 30N128W through the Revillagigedo Islands to 14N96W. The relatively flat pressure gradient from the ridge to the ITCZ is causing NE trades of generally moderate breeze or weaker except near thunderstorms along the surface trough. Peak seas are 8 to 9 ft east of 120W and south of 15N, primarily due to long-period SW swell. A weak cold front will reach our NW corner of 30N140W tomorrow morning and progress to 30N132W to 24N140W Mon morning, before dissipating by Tue morning. SW winds ahead and NW winds behind the front should remain fresh breeze or weaker. A NW swell of 8 to 10 ft will impact the waters north of 25N west of 130W Sun night through Tue morning. Elsewhere winds should remain tranquil through at least Thu night. Large, long period SW swell will continue to impact the high seas waters south of 15N and east of 125W through the weekend before gradually fading. Peak seas observed by altimeter earlier today reached to 10-11 ft well southwest of Mexico. $$ Landsea