000 AXPZ20 KNHC 071606 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Tue Apr 07 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 1200 UTC surface analysis and satellite imagery through 1545 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A trough axis extends from 09N84W to 05N92W. ITCZ axis extends from 05N92W to 05N103W, where it bisected by a trough that extends from 10N103W to 05N106W to 02N106W. It resumes at 05N106W to 03N117W to 05N130W to beyond the area at 05N140W. Scattered moderate convection is within 60 nm north of the ITCZ between 96W and 101W and within 30 nm of the ITCZ between 85W and 90W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A cold front extends from 30N118W to 24N127W and to 23N140W. Fresh southwest winds are over the northern Gulf of California ahead of the front. Gentle to moderate winds prevail elsewhere over the open waters off Baja California and SW Mexico. Behind the front wave heights are 5-7 ft, otherwise seas are generally 4-6 ft or less across the area. The cold front will move across the northern Gulf of California today, then dissipate tonight into Wed. An area of northwest swell, with waveheights reaching 9 ft will follow in behind the front over the north-central waters beginning this evening before decaying Wed afternoon. High pressure will build in the wake of the front. As the ridge builds, fresh to locally strong winds are likely to develop off the west coast of Baja California Sur and offshore Cabo Corrientes Wed and Thu. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong northeast winds are over the Gulf of Papagayo, while northerly winds across the Gulf of Panama have diminished to mainly moderate speeds. Elsewhere light to gentle winds prevail. Wave heights are in the range of 5-7 ft between the Galapagos Islands and mainland Ecuador where southwest swell is propagating across the area. Elsewhere, seas are less than 5 ft. The pressure gradient between high pressure north of the area and a surface trough over the equatorial waters will continue to allow for pulses of fresh to strong northeast winds each night in the Gulf of Papagayo region beginning tonight. Long- period southwest swell will continue across the southern waters will subside through midweek. REMAINDER OF THE AREA... A cold front is analyzed along a position from near 30N118W to 24N117W and to near 23N140W. Strong high pressure is building in the wake of the front. The pressure gradient between the area of high pressure and lower pressure in the vicinity of the ITCZ is supporting mainly moderate tradewinds from about 13N to 16N and between 130W and 135W, where wave heights are in the 6-8 ft range. Elsewhere north of the ITCZ to 22N and west of 115W, trades are of the gentle to moderate range, with wave heights of 5-7 ft, These general conditions will change little today. The strong high pressure behind the front will then build south- southeastward while it strengthens beginning late tonight. This will tighten the gradient further resulting in the moderate tradewinds increasing to strong speeds. These trades will briefly diminish to fresh speeds early Wed, then increase back up to strong speeds Wed afternoon and through the end of the week while diminishing in coverage. Wave heights with these tradewinds will peak to 10 ft late Wed into Thu. $$ Aguirre