000 AXPZ20 KNHC 181605 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 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 1200 UTC surface analysis and satellite imagery through 1530 UTC. ...SPECIAL FEATURES... Hurricane Linda is centered near 18.2N 131.8W at 18/1500 UTC moving W at 11 kt. Estimated minimum central pressure is 975 mb. Maximum sustained wind speed is 90 kt with gusts to 110 kt. Numerous moderate and scattered strong convection is present within 120 NM of the center of Linda. Peak seas are currently near 30 ft and are expected to diminish slightly by Thu afternoon to 25 ft, as the system crosses 140W. A turn toward the west- northwest is expected later today, and this general motion should continue through the weekend. A slow weakening trend is forecast to begin by tonight, followed by more steady weakening Thursday through Friday. 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 91W and north of 05N, moving W around 10 kt. Scattered moderate to isolated strong convection is occurring from 09N-12N between 87W-93W. A tropical wave extends its axis along 103W and north of 03N, moving W at 5-10 kt. Scattered moderate convection is noted north of 11N between 90W-94W. A tropical wave extends its axis along 117W north of 03N, moving W around 10 kt. No significant deep convection is currently present with this wave. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N78W to 07N81W to a 1009 mb low pressure at 14N99W to 10N140W. Aside from the convection described in the Tropical Wave sections, no significant convection is evident along the monsoon trough at this time. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface trough extends from 30N118W to 26N122W, supporting SW to S fresh to strong winds in the northernmost Gulf of California. Elsewhere surface ridging extending from a 1033 mb high near 44N141W south-southeastward to 22N110W is providing quiescent conditions across the Mexican Offshore zones. Seas are generally 6-8 ft in the offshore due primarily to SW swell, 3-6 ft in the northernmost Gulf of California, and 1-2 ft elsewhere in the Gulf. For the forecast, the surface trough just west of Baja California will move northeastward, supporting SW to W fresh to strong gap winds over northernmost Gulf of California through Thu morning. SW swell of 8 ft in the waters off S Mexico will gradually subside through Sun. No tropical cyclone activity is expected through at least Sun night over the Pacific Offshore zones. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Tranquil winds will persist over the Central American and Equatorial Offshore zones through at least Sun night. A 1200 UTC altimeter pass indicated significant wave heights around 8 ft south of Mexico, nearly entirely due to SW swell. These seas will affect the same waters through Thu, before gradually subsiding into Sun. REMAINDER OF THE AREA... Please read the Special Features section for details on Hurricane Linda. Elsewhere, surface ridging extending from a 1033 mb high near 44N141W south-southeastward to 22N110W is promoting generally moderate or weaker winds north of the monsoon trough. SW winds equatorward of the monsoon trough are moderate to fresh. Seas are 8-9 ft from 8N-13N between 95W-112W, mainly due to SW swell. For the forecast away from Laura, no significant changes to the winds over the open Pacific are expected for the next several days. A N swell will boost seas 8-10 ft north of 27N between 120W-135W from tonight through Sun night. The SW swell south of 13N will gradually diminish through Sun night. No new tropical cyclone activity is expected through at least Sun night over the open Pacific. $$ Landsea