000 AXPZ20 KNHC 301519 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Apr 30 2018 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 1200 UTC surface analysis and satellite imagery through 1545 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough axis extends southwest from the Pacific coast of Costa Rica at 07N78W to 08N88W to 07N100W, where latest scatterometer data indicates that the ITCZ axis begins and continues to 07N113W to 06N125W to 05N140W. Scattered strong convection is seen within 120 nm north of the ITCZ axis between 129W and 131W, within 90 nm north of the axis between 126W and 129W, within 90 nm south of the axis between 124W and 125W, and within 45 nm south of the axis between 127W and 131W. Scattered moderate isolated strong convection is within 120 nm south of the trough axis between 79W and 81W, and also within 60 nm either side of the trough axis between 97W and 100W. Scattered moderate convection is within 60 nm north and south of the trough axis between 84W and 86W, and within 60 nm south of the axis between 83W and 84W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A northwest to southeast ridge will prevail through the entire forecast period. A slightly tight pressure gradient between the ridge and broad low pressure over the western half of the United States will continue to support fresh northwest flow across the open waters N of 27N west of the Baja Peninsula. Winds will diminish to moderate northerly breeze by late Wed night as the area of low pressure N of the area weaken before dissipating on Thu. Associated seas will subside to less than 8 ft by late Wed. Gulf of California: A strong southwest breeze is from 29N to 31N this morning, however is forecast to diminish within the next six hours. Fresh to strong southwest winds will resume Mon night continuing to early Wed. Seas will be building to a maximum of 8 ft. Gulf of Tehuantepec: The next strong event may begin Sat morning. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to locally strong nocturnal drainage flow is forecast at night starting tonight through Thu. Gulf of Panama: Gentle to moderate nocturnal flow is forecast for the next several nights. Elsewhere, light to gentle winds will prevail through Mon, accompanied by 3 to 6 ft seas. REMAINDER OF THE AREA... A broad surface ridge extends across the forecast waters. Fresh trades, and 6 to 8 ft seas will continue between the ridge and the ITCZ through Thu. $$ Aguirre