000 AXPZ20 KNHC 260114 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Wed Jul 26 2023 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 0050 UTC. ...TROPICAL WAVE... A tropical wave extends along 103W from 01N to 16N, moving west at around 15 kt. Scattered moderate isolated strong convection is evident from 05N to 19N between 100W and 109W. A tropical wave extends along 116W from 05N to 21N, moving west at around 15 kt. No significant convection is observed near this tropical wave. A tropical wave extends along 138W from 01N to 15N, moving west at around 15 to 20 kt. Scattered moderate convection is noted from 03N to 13N between 135W and 140W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N83W to 06N94W to 08N105W to 07N113W to 08N131W. The ITCZ extends from 08N131W to 09N137W. In addition to the convection described in the tropical wave section, scattered moderate convection covers a large area from 02N to 09N between 77W and 96W, and also from 03N to 11N between 118W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh to strong N gap winds are funneling into the Gulf of Tehuantepec, building seas to 6 ft. A surface trough along the Baja Peninsula is helping to support moderate NW winds in the Pacific waters west of the Peninsula and moderate SE winds in the Gulf of California. Mainly gentle to locally moderate winds prevail elsewhere outside of thunderstorms. Long period S-SW swell dominates the majority of the area, with mixed NW swell offshore Baja California. For the forecast, fresh to strong northerly gap winds are expected to persist in the Gulf of Tehuantepec into the weekend. A building gradient between high pressure over northern Mexico and a trough near the Baja Peninsula will generate fresh to occasionally strong SE winds in the Gulf of California nightly through Sun morning. Gentle to moderate winds and moderate seas will persist elsewhere. Seas may build slightly offshore Baja California Norte this weekend in new NW swell. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Showers and thunderstorms are ongoing offshore Colombia, Panama and Costa Rica. A recent ship observation offshore Papagayo reported NE 30 kt winds and 8 ft seas. Gentle to moderate winds are noted elsewhere. Outside of the Papagayo region, seas are mainly 3-5 ft, except 5-7 ft S-SW swell south of 02N. For the forecast, fresh to strong E gap winds will pulse nightly in the Papagayo region through Thu evening before decreasing to moderate to locally fresh early Fri. Moderate to fresh N winds will pulse in the Gulf of Panama through Thu night. Gentle to moderate winds and slight to moderate seas will persist elsewhere, except for locally gusty winds near strong thunderstorms south of Costa Rica/Panama and west of Colombia. ...REMAINDER OF THE AREA... The main feature outside of the offshore waters remains the robust tropical wave near 138W, though the convection and wind speed have both decreased somewhat in the past several hours. Nonetheless, an area of fresh to strong NE winds persist around the northern portion of the wave. These winds are helping to maintain seas to 8 ft. Otherwise, weak high pressure ridging dominates the basin N of the monsoon trough and ITCZ. S swell from the southern hemisphere is supporting combined seas to 8 ft south of the equator between 100W and 120W. Elsewhere, mainly gentle to moderate winds and moderate seas prevail across the area. For the forecast, the robust tropical wave will shift W of 140W Wed morning while the associated conditions will linger through Wed night. Elsewhere, mainly gentle to moderate winds are forecast through the next several days. Moderate seas will prevail, maintaining around 8 ft S of the Equator and W of 95W through the remainder of the week. $$ Lewitsky