000 AXPZ20 KNHC 170342 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Tue Aug 17 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 17.7N 125.4W at 17/0300 UTC moving W at 8 kt. Estimated minimum central pressure is 970 mb. Maximum sustained wind speed is 85 kt with gusts to 105 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 84W/85W and north of 06N through Costa Rica, moving W at 5-10 kt. Scattered moderate convection is FROM 06N to 08N between 85W and 88W. A tropical wave extends its axis along 98W and north 01N into southern Mexico, moving W at 10 kt. No significant convection is noted with this tropical wave. A tropical wave extends its axis along 112W/113W north of 01N, drifting W. Scattered moderate convection is noted from 14N to 15N between 108W and 110W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N79W to 13N95W to 1008 mb low pressure near 13N108W to 09N115W to beyond 14N140W. No ITCZ is present at this time. In addition to the tropical waves described above, scattered moderate convection is evident from 10N to 12N between 102W and 105W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section for details on Hurricane Linda. A weak surface ridge extends from 1024 mb high pressure well northwest of the area near 36N138W southeastward into central Baja California. Moderate to fresh NW winds are noted off Baja California Norte between the ridge and lower pressure over the southwest U.S. Earlier scatterometer satellite data and ship observations showed mostly light to gentle NW winds off Baja California. Recent altimeter data showed 5 to 7 ft seas mostly 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, a surface trough, the remains of a cold front, will move into the waters off Baja California Norte overnight, then move eastward across the northern Gulf of California through mid week. This will allow a small area of westerly fresh to strong gap winds over the far northern portion of the Gulf of California Tue night through Wed night. Expect increased SW swell in the waters off southern Mexico by mid week, gradually subsiding through Sat. 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. For the forecast, the gentle to moderate winds and moderate SW swell will persist into Tue. Expect increased SW swell across the region by mid week, gradually subsiding through Sat. REMAINDER OF THE AREA... Please read the Special Features section for details on Hurricane Linda. Recent altimeter satellite data confirmed rough seas reaching 9 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 east of 120W. 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. For the forecast, Hurricane Linda will continue to impact the region from roughly 15N to 25N 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