NHC Tropical Weather Discussion (East Pacific) National Hurricane Center - Tropical Weather Discussion (East Pacific)

  • NHC East Pacific Tropical Weather Discussion

    270 AXPZ20 KNHC 170954 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Wed Jul 17 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 0830 UTC. ...TROPICAL WAVES... A tropical wave with axis near 98W N of 03N is moving west at 15 to 20 kt. Scattered moderate and isolated strong convection is noted north of 14N between 98W and 102W. A tropical wave with axis near 118W from 03N to 20N is moving west at 15 to 20 kt. Scattered moderate isolated strong convection is associated with the monsoon trough between 110W and 121W. A tropical wave with axis near 138W from 03N to 19N is moving west around 15 kt. No significant deep convection is occurring in association with this wave. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N79W to 11N94W to 10N112W to 12N122W to 10N135W. Scattered moderate isolated strong convection is noted from 05N to 08N between 86W and 89W. Scattered moderate isolated strong convection is noted from 07N to 12N between 110W and 125W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface high well west of California is contributing to quiescent winds over most of the Mexican offshore zones through Sun. A complex low pressure system over the U.S. Great Basin is forcing SE fresh to strong breeze over the central and northern Gulf of California through today. A surface high over the Gulf of Mexico combined with the monsoon trough will force a N fresh to strong gap wind event in the Gulf of Tehuantepec through Fri. No tropical cyclone activity is expected to impact the Mexican offshore zones for the next several days. No significant long period-swell should affect the area through at least Sun. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A moderate N to S pressure gradient across Central America is forcing NE to E winds up to strong breeze in the Gulf of Papagayo through Sun. Elsewhere E winds should remain moderate or weaker north of the monsoon trough along 10N, and S to SW moderate breeze or weaker south of the trough. No tropical cyclone activity is expected to impact the Central America offshore zones for the next several days. No significant long- period swell should affect the area through at least Sun. REMAINDER OF THE AREA... A ridge extends from high pressure northwest of the area to near the Revillagigedo Islands. The pressure gradient between the high and lower pressure along the monsoon trough will support moderate to fresh NE trade winds for the next several days. Weak low pressure of 1008 mb is centered near 11N94W. Environmental conditions are forecast to become conducive for gradual development of this low later this week. No significant long period-swell should affect the area through at least Sun. $$ Mund […]