000 AXPZ20 KNHC 031507 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1505 UTC Sun Sep 3 2017 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 1430 UTC. ...TROPICAL WAVES... A tropical wave has an axis that extends from 18N102W through a 1012 mb low pressure area near 13N103W to 09N102W, moving W at 10 to 15 kt. Scattered moderate convection is from 14N to 18N between 97W and 104W. ..INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N75W to 09N90W to 1012 mb low pressure near 13N103W to 1012 mb low pressure near 15N128W to beyond 13N140W. Scattered moderate to strong convection is within 180 nm of either side of the trough axis, east of 91W. Isolated moderate convection is within 90 nm of the trough axis between 111W and 125W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The remnant low of Lidia is centered near 30N117W off the coast of Baja California Norte and is producing strong southwest winds between the low and the coastline, as well as over the Gulf of California north of 30N, with seas near 8 ft. The low will continue to move northwest through Monday and exit our area later today, with winds and seas improving over our waters. A weak ridge will build E of the area through early next week, supporting gentle to moderate northwest breezes and seas of 3 to 5 ft across the region north of 20N into the middle of next week. Farther south, fresh overnight gap winds are possible through the Gulf of Tehuantepec tonight and then again late this week with seas building to near 7 ft. Light to gentle winds and seas of 4 to 6 ft will prevail elsewhere. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: A moderate to locally fresh offshore breeze is expected tonight. Otherwise, light and variable winds are expected N of the monsoon trough through mid week, while moderate to locally fresh southerly winds are expected S of the monsoon trough axis with seas of 4 to 6 ft over the entire area. Later in the week seas will increase to 5 to 7 ft with the aid of long period southwesterly swell. REMAINDER OF THE AREA... Weak ridging will prevail over the northwest waters with a high centered near 28N135W, maintaining light to gentle winds north of 15N and seas of 4 to 6 ft. Farther south, expect moderate trades north of the monsoon trough, with moderate to fresh SW winds south of the monsoon trough. Long period SE cross- equatorial swell with 7 to 9 ft combined seas will continue to move as far north as 06N through Mon, but decaying below 8 ft Tue. Later in the week, combined seas from SE swell and southerly winds south of the monsoon trough are forecast to increase seas to 8 to 9 ft south of 10N between 105W and 125W. $$ Latto