000 AXPZ20 KNHC 280939 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Tue Aug 27 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 06000 UTC surface analysis and satellite imagery through 0845 UTC. ...TROPICAL WAVES... A tropical wave is along 87W/88W, N of 03N to across Central America, moving W at 10-15 kt. Widely scattered showers and thunderstorms are noted near the wave from 05.5N TO 14N between 81W AND 90W.. A tropical wave is along 103W/104W, N of 04N to near the coast of SW Mexico, moving W at 15 kt. Scattered moderate to strong convection is noted from 06.5N to 15N between 93.5W and 106W. A tropical wave is along 133W, from 02N to 15N, moving W at 10- 15 kt. Scattered moderate and isolated strong convection is noted from 05N to 011N between 128W and 140W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09.5N74W TO 10N102W TO 11N117W TO 09.5N129W. The ITCZ extends from 05.5N135W to 06N140W. Scattered to numerous moderate yo strong convection is noted mainly over Colombia and the adjacent Pacific waters from 03N to 09N E of 81W. Scattered moderate to strong convection is from 05.5N to 11N between 108W and 128W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The remnant low of Ivo has now dissipated into a trough extending over the offshore waters from 26N114.5W to 21N116W, with no significant convection. This trough should completely dissipate during the next 24-48 hours while remaining nearly stationary. High pressure ridging will prevail elsewhere along the outer offshore waters, with mainly gentle to moderate NW to N winds. Gentle to moderate southerly winds in the Gulf of California will increase to fresh to strong this morning, and shift northward to produce similar conditions in the northern Gulf Wed night into early Thu, and then develop again Sat night into early Sun. No significant swell events are anticipated across the offshore waters through the remainder of the week and the upcoming weekend. An middle to upper level trough lingering from Texas SW across northern Mexico continues to support strong nocturnal convection across the western slopes of the Sierra Madre Occidentales again tonight, with a large cluster having shifted offshore and across the Gulf of California to Baja California Sur, from 22N to 28N to the east of 112W. This convection will shift slowly westward across the Gulf and diminish later this morning. Winds in the Gulf of Tehuantepec are expected to become offshore Wed night and increase to fresh to strong through early Fri, with moderate to fresh pulses at night thereafter. Seas will increase to 6-8 ft at the peak of these winds each early morning. Offshore WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh NE to E winds in the Gulf of Papagayo will pulse to fresh to strong through this morning, and then again Wed night into early Thu, with weaker winds thereafter. Light to gentle winds are expected elsewhere N of the monsoon trough, with gentle to moderate S to SW winds S of the monsoon trough. No significant southerly swells are anticipated through the remainder of the week and the upcoming weekend. REMAINDER OF THE AREA... Broad high pressure of 1017 mb is centered near 26N128W with ridging extending to the SE to near 17N117W. Overnight scatterometer data showed mainly gentle to moderate anticyclonic winds to the south of the ridge, N of the ITCZ/monsoon trough, locally moderate. Earlier altimeter data showed seas of 4-6 ft N of the ITCZ/monsoon trough, with 4-7 ft seas with some cross- equatorial southerly swell S of the ITCZ/monsoon trough. The high is forecast to linger through the end of the week while strengthening slightly to 1022 mb by Fri afternoon, then weakening again this weekend. Little change in marine conditions is expected through this time period. $$ Stripling