317 AXPZ20 KNHC 271543 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Fri Jul 27 2018 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 1545 UTC. ...SPECIAL FEATURES... Tropical Storm Gilma centered near 14.9N 128.4W at 27/1500 UTC or 1590 nm E of South Point Hawaii moving WNW at 15 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Scattered moderate to strong convection is currently observed within 300 nm SE and 30 nm NW semicircles of the center of Gilma. See latest NHC forecast/advisory under AWIPS/WMO headers MIATCPEP3/WTPZ33 KNHC for additional details. Remnants of Tropical Depression Nine-E is centered near 10.6N 138.8W at 27/1500 UTC or 1090 nm ESE of Hilo Hawaii moving W at 11 kt. Estimated minimum central pressure is 1008 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Moderate to strong convection is observed within 180 nm over the SW quadrant of the center. Refer to latest NHC forecast/advisory under AWIPS/WMO headers MIATCPEP4/WTPZ34 KNHC for additional details. ...TROPICAL WAVES... A tropical wave is analyzed from 05N97W to 16N98W and is estimated to be progressing W at 18 kt. Scattered moderate and isolated strong convection is currently noted within 120 nm either side of the wave axis. A tropical wave extends from 08N116W to 16N115W and is moving W at 12 kt. Scattered moderate convection is noted within 120 nm W of the wave axis. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends SW off the Pacific coast of Costa Rica at 10N84W to 07N95W, then turns NW through a tropical wave at 08N97W to 12N115W where it loses identity. Scattered moderate isolated strong convection is observed elsewhere within 150 nm either side of line from 06N77W to 10N111W, and also within 60 nm of 10N132W. Scattered moderate to strong convection is currently observed along the Pacific coast of Mexico within 75 nm of 17.5N103W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad N-NW to S-SE orientated trough will meander E to W across the Baja California Peninsula and the Gulf of California into early next week while a second weak trough meanders across the offshore waters W of the northern Baja Peninsula. Light to gentle breezes are forecast W of Baja Peninsula and Central Mexico through Mon when guidance suggests that moderate NW flow will begin to develop within 60 nm of the central Baja California Peninsula. Expect 3 to 5 ft throughout. Gulf of Tehuantepec: Gentle to moderate onshore flow is expected during the daylight hours then becoming gentle offshore flow during the overnight hours. Gulf of California: Moderate southerly winds are expected N of 29N through tonight. Otherwise gentle to locally moderate southerly flow expected through the end of the week. Scattered moderate isolated strong convection is currently observed across the gulf waters from 26N to 29.5N. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Moderate easterly flow is expected through early early next week. Gentle to occasionally moderate E winds are forecast elsewhere N of the monsoon trough which is meandering between 08N and 10N. Moderate to locally fresh southerly winds are forecast S of the monsoon trough through late Sat accompanied by 5 to 7 ft seas. Long period cross-equatorial southerly swell, in the form of 7 to 8 ft seas, will arrive along 03.4S E of 93W on Sat night and reach the equator on Sun night. REMAINDER OF THE AREA... See the special features section for information on Tropical Storm Gilma and the dissipating remnants of Tropical Depression 9-E, and the tropical waves section for details on two tropical waves. Otherwise, a surface ridge will meander across the discussion area from near 32N135W to near 12N100W surrounded by moderate t locally fresh anticyclonic winds and 5 to 7 ft seas. Moderate to locally fresh southerly forecast elsewhere S of the monsoon trough or roughly 10N for the next several days with long period cross-equatorial swell crossing the equator between 98W and 112W on Sun. $$ Nelson