517 AXPZ20 KNHC 022031 CCA TWDEP Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 1605 UTC Sun Aug 2 2020 Corrected Offshore Waters Within 250 nm of Mexico section 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. ...TROPICAL WAVES... A tropical wave has its axis along 102W from 01N to 18N, moving westward at 15-20 kt. No deep convection is noted as a slot of dry air is impinging onto the wave from the east. Only isolated small showers and thunderstorms are seen within 120 nm either side of the wave from 11N to 15N. A tropical wave has its axis along 112W from 02N to 18N, moving westward at 15 kt. This wave is embedded within a very moist and unstable deep-layer atmospheric environment as observed conventional satellite imagery and in the total precipitable water (TPW) satellite imagery animation. Scattered showers and thunderstorms west of the wave to 119W from 11N to 15N. Isolated small showers and thunderstorms are visible east of this wave to 107W from 13N to 17N. A tropical wave has its axis along 125W from 02N to 17N, moving westward at 15 kt. Scattered showers and thunderstorms are within 180 nm east of the wave axis from 06N to 10N. This activity is situated where broad mid-level cyclonic turning is occurring. Isolated small showers and thunderstorms are within 180 nm east of the wave axis from 10N to 17N, and west of the wave axis within 30 nm of 13N126W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis from low pressure of 1009 mb over northwestern Colombia to across central Panama and southern Costa Rica, westward from there to 08N90W and continues to 10N103W and northwestward to 13N111W to 12N118W to low pressure near 10N127W 1010 mb and to 06N140W. Scattered moderate to strong convection is within 120 nm south of the trough axis between 107W-110W. Scattered moderate to isolated strong convection is seen from 05N to 08N between 78W-81W. Scattered moderate convection is within 120 nm south of the trough axis between 103W-106W, within 60 nm south of the trough axis between 119W- 122W and also within 30 nm of the trough axis between 89W-92W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO...Corrected The pressure gradient between high pressure of 1023 centered near 34N134W and a meandering trough over the Baja California Peninsula will support gentle to moderate NW winds over the offshore waters W of Baja California through early Wed. A stronger high pressure center will begin to dominate the forecast area by mid-week, resulting in moderate to fresh northwest to north winds N of Punta Eugenia, with seas building to 8 ft. Between June and October, the prevailing winds in the Gulf of California are mainly southeast in direction. Gentle to moderate southeast to south winds are expected in the northern part of the Gulf well into the middle part of the week, while mainly gentle southeast to south winds are forecast elsewhere. Pulsing northerly winds are expected in the Tehuantepec region during the overnight and early morning hours through Wed, as northerly winds persist in the Bay of Campeche. Seas are forecast to remain in the 5-7 ft range. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... A monsoon trough axis stretches roughly along 09N to 10N east of about 100W. Recent overnight scatterometer data showed mainly moderate south to southwest winds to the south of the monsoon trough, and light westerly winds to the north of the monsoon trough. As it is normal for this time of the year, tropical waves will continue to migrate westward across Central America into the eastern Pacific region, helping to induce some convective activity across the area. REMAINDER OF THE AREA... Riding associated to high pressure of 1023 mb centered at 32N136W dominates the northern forecast waters north of 20N and west of 120W. The pressure gradient between the ridge and lower pressure associated to the monsoon trough is supporting moderate to fresh trade winds north of the trough axis to 18N, and west of about 120W. By the middle of the week, a stronger high pressure center will extend a ridge across the forecast waters. Moderate to locally fresh northeast winds associated with this system mixing with a southeast swell component will briefly build seas to 8 ft across some sections of the northwest part the forecast waters, especially from 23N to 26N W of 137W by Mon night. $$ Aguirre