000 AXPZ20 KNHC 180348 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Wed Aug 18 2021 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 140W. The following information is based on satellite imagery, weather observations, radar, and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0300 UTC. ...SPECIAL FEATURES... Hurricane Linda is centered near 17.9N 129.5W at 18/0300 UTC moving W at 10 kt. Estimated minimum central pressure is 975 mb. Maximum sustained wind speed is 90 kt with gusts to 110 kt. Scattered to numerous moderate convection within 75 nm of the center. Slow weakening is forecast over the next several days, and Linda should remain a hurricane through Wednesday as it continues westward. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPEP2.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP2.shtml for more details. ...TROPICAL WAVES... A tropical wave extends its axis along 88W and north of 05N, moving W at 5-10 kt. No significant weather is associated with this tropical wave. A tropical wave extends its axis along 102W and north 02N into southern Mexico, moving W at 10 kt. Scattered moderate convection is noted from 13N to 15N between 101W and 103W. A tropical wave extends its axis along 115W north of 04N, moving W at 10 kt. Scattered showers are noted from 14N to 15N between 113W and 114W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 11N86W to a 1010 mb low near 13N98W to 1011 mb low near 13N110W to 14N125W to beyond 11N140W. No ITCZ is present at this time. In addition to the tropical waves described above, scattered moderate to isolated strong convection is evident from 13N to 14N between 98W and 100W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section for details on Hurricane Linda. Recent ship observations and latest scatterometer data indicated a surface trough off the coast of Baja California Norte, and a large area of light to gentle NW breezes north of 20N. Earlier altimeter data showed 5 to 7 ft seas with SW swell. Light breezes and slight seas persist throughout the Gulf of California. Farther south, light to gentle SW winds are noted south of Cabo Corrientes, with 3 to 5 ft in SW swell. Clusters of thunderstorms are ongoing off Cabo Corrientes. For the forecast, the surface trough off Baja California will move northeastward across the northern Gulf of California through mid week. This will allow a small area of westerly fresh to occasionally strong gap winds over the far northern portion of the Gulf of California through Thu. Expect increased SW swell in the waters off southern Mexico by mid week, gradually subsiding through Sat. These swells may cause life-threatening surf and rip current conditions. Please consult products from your local weather office. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Earlier scatterometer satellite data depicted gentle to moderate SW flow across the region into the monsoon trough. Seas are 4 to 6 ft in SW swell. A few coastal showers and thunderstorms are note from Costa Rica to El Salvador. For the forecast, gentle to moderate winds will persist through Sat south of 10N or more generally south of the monsoon trough. SW swell of at least 8 ft off Ecuador will move north and impact the waters off Central America Wed and Thu, before gradually subsiding through Sat. These swells may cause life-threatening surf and rip current conditions. Please consult products from your local weather office. REMAINDER OF THE AREA... Please read the Special Features section for details on Hurricane Linda. Recent altimeter satellite data from 01 UTC confirmed rough seas reaching 8 to 10 ft from 05N to 12N between 95W and 110W in a surge of SW winds and swell. Reinforcing SW swell is also evident generally south of 05N between east of 115W. Elsewhere gentle to moderate southerly breezes and moderate SW swell are noted south of the monsoon trough. Gentle to moderate northerly flow is noted north of the monsoon trough outside of a roughly 240 nm buffer around Hurricane Linda. Seas are reaching 7 ft north of 28N between 120W and 130W in a mix of SW and northerly swell, with moderate seas elsewhere outside of Linda, except near 15N135W where another recent altimeter pass indicating seas to 8 ft. For the forecast, Hurricane Linda will continue to impact the region from roughly 15N to 20N west of 125W through Thu as it continues to move westward. Elsewhere, moderate to locally fresh NW winds will follow a trough moving into the waters off Baja California by mid week. Long period NW swell to 8 ft will also follow this trough, reaching as far south as 27N after Wed. South of the monsoon trough and east of 110W, fresh to strong SW flow with reinforcing SW swell with seas to build to 9 ft will persist through mid week. $$ Christensen