000 AXPZ20 KNHC 091508 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Tue Nov 9 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 1500 UTC. ...SPECIAL FEATURES... Tropical Depression Sandra is centered near 14.6N 120.7W at 09/1500 UTC moving W at 11 kt. Estimated minimum central pressure is 1010 mb. Maximum sustained wind speed is 25 kt with gusts to 35 kt. Peak seas are to 10 ft. Widely scattered moderate isolated strong convection is noted from 10N TO 18N between 115W AND 121W. Sandra will continue moving westward, while the wind shear is expected to weaken the system to a remnant low by this afternoon. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPEP4.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP4.shtml for more details. Tropical Depression Terry is centered near 11.1N 111.7W at 09/1500 UTC moving W at 12 kt. Estimated minimum central pressure is 1007 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Peak wave heights are near 10 ft. Scattered moderate isolated strong convection is noted from 10N to 15N between 110W and 115W. Terry is expected to continue on a westward track, and slowly weaken to a remnant low by Thu. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPEP3.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP3.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough from 09N84W to 07N99W. ITCZ from 10N123W to beyond 08N140W. Scattered moderate to strong convection is noted N OF 02N E of 81W, and from 04N to 07N between 87W and 97W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Strong to near gale winds, and seas to 10 ft, prevail over the Gulf of Tehuantepec Elsewhere, a weak surface ridge extends SE to the W of Baja California Sur. The pressure gradient is weak across the region, supporting light to gentle winds prevail across much of the forecast waters. A locally tighter pressure gradient is supporting gentle to moderate winds off Baja California Sur. Seas are in the 6-8 ft range in mixed swell, except for 1-3 ft in the Gulf of California. Strong gap winds will prevail across the Gulf of Tehuantepec through early Wed, pulsing to just below gale force tonight. Gentle to moderate northerly winds will to prevail across the Baja offshore waters today then become fresh tonight through early Thu, except for strong winds gradually spreading S to offshore of Cabo San Lazaro through Wed evening. Moderate N winds inside the Gulf of California will become fresh Wed afternoon through Thu afternoon. Strong gap winds will return to Tehuantepec Fri through Sat. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR The pressure gradient between high pressure over the SE United States and the eastern Pacific monsoon trough is supporting strong gap winds across the Papagayo region, and fresh gap winds across the Gulf of Fonseca. Elsewhere light to gentle winds NE are N of the monsoon trough and gentle to moderate SW to S winds prevail S of the monsoon trough. Seas of 5-6 ft prevail in SW swell across the discussion waters. Fresh to strong gap winds will continue over the Gulf of Papagayo through midday Wed before diminishing through the remainder of the week. Gentle to moderate S to SW winds will persist south of the monsoon through the forecast period. REMAINDER OF THE AREA... Please see special features section above for more on T.D. Terry and T.D. Sandra. The pressure gradient between 1022 mb high pressure near 27N127W and lower pressure within the monsoon trough and in the vicinity of the ITCZ is supporting moderate to fresh NE to E winds N of the ITCZ and monsoon trough to near 21N and W of 115W, with gentle to moderate winds N of 21N. Gentle to moderate winds prevail south of the monsoon trough and ITCZ. Seas are in the 7-9 ft range in mixed NW and NE swell over the waters north of 10N and west 115W. Seas in the 6-8 ft range prevail elsewhere. High pressure will build across the northern waters through mid week to maintain a zone of fresh trade winds S of 20N throughout most of the week. The remnants of Sandra will move westward through the trade wind zone to produce a broad area of strong trades and seas to around 10 ft. $$ AL