000 AXPZ20 KNHC 100908 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Mon Jun 10 2019 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 0600 UTC surface analysis and satellite imagery through 0900 UTC. ...TROPICAL WAVES... A tropical wave is to the east of the area over western Colombia, moving west at 15 kt. Scattered moderate and isolated strong convection is from 02N to 05N east of 79W with additional convection inland. A tropical wave is near 97W, moving west at 10-15 kt. Scattered moderate and isolated strong convection is north of 12N between 93W and 98W, including the Gulf of Tehuantepec. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N86W to 11N96W to 07N107W. The ITCZ continues from 07N107W to 06N120W to 06N140W. Scattered moderate isolated strong convection is noted north of 06N between 81W and 84W, north of 09N between 85W and 90W, and also from 09N to 12N between 131W and 136W. Scattered moderate convection is noted from 10N to 11N between 97W and 102W, from 06N to 10N between 104W and 110W, and also elsewhere from 09N to 14N between 134W and 140W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle to moderate winds prevail over the open waters off the coast of Mexico. Light and variable winds prevail over the Gulf of California. Over the open waters off Mexico, seas are mainly in the 4-6 ft range. Seas over the Gulf of California are 3 ft or less. High pressure west of Baja California will maintain gentle to moderate NW winds over the offshore waters through the next several days. Winds may briefly pulse to locally fresh off Cabo San Lucas each late afternoon and evening for the next several days. Northerly gap winds are expected to develop over the Gulf of Tehuantepec this evening as the local pressure gradient tightens. Winds will peak near 30 kt Tue morning, when seas will build up to 10 ft. Winds will diminish to 20 kt or less Wed afternoon, before returning Thu night. Freshening NW winds along the Baja California coast will produce areas of fresh to strong westerly gap winds inside of the Gulf of California Tue night through Fri, mainly at night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate S to SW wind flow is noted across the forecast waters S of the monsoon trough, and light easterly winds N of the monsoon trough. Seas are in the 4-6 ft range across the forecast area. Nocturnal offshore flow will pulse to fresh offshore in the Gulf of Papagayo beginning Tue night as winds east of the area in the western Caribbean Sea increase. Otherwise, little change in winds are expected through the next several days. A new set of long period southwest swell will arrive by the end of the week, building seas between mainland Ecuador and the Galapagos Islands. REMAINDER OF THE AREA... High pressure of 1033 mb centered well NW of the area near 42N134W extends a ridge SE to just S of the Revillagigedo Islands. Moderate to fresh N to NE winds prevail north of the ITCZ and west of 125W, with gentle to moderate winds east of 125W. Seas are reaching 8 ft in northerly swell N of 29N between 126W and 131W. The northerly swell will subside below 8 ft later this morning. Seas are 5-7 ft elsewhere, except from 09N to 15N to the west of 125W where seas are reaching near 8 ft in mixed swell. Little change in winds are expected through the week, while seas will subside to 4-6 ft across the high seas area. $$ Lewitsky