000 AXPZ20 KNHC 081509 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Nov 8 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 1440 UTC. ...SPECIAL FEATURES... Tropical Storm Sandra is centered near 14.6N 116.8W at 08/1500 UTC moving WNW at 6 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Peak seas are up to 12 ft. Scattered moderate isolated strong convection is noted from 12N to 18N between 112W and 117W. Sandra is expected to become a tropical depression today remnant low by Tuesday evening. 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 10.1N 106.6W at 08/1500 UTC moving WNW at 13 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Peak wave heights are estimated at 12 ft within 90 nm NE quadrant of the center. Scattered moderate and isolated strong convection is from 07N TO 12N between 101W AND 110W. Terry is expected to continue on a WNW track, weakening to a remnant low the middle of the week. 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. Gulf of Tehuantepec Gale Warning: The pressure gradient between high pressure across the western Gulf of Mexico and low pressure within the monsoon trough is supporting gale force gap winds over the Gulf of Tehuantepec. Winds are expected to diminish just below gale force today. Strong winds will persist through midweek before diminishing Thu. Please read the latest NWS High Seas Forecast issued by the National Hurricane Center at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N84W to 07N91W to 09N100W. The ITCZ extends from 10N128W to beyond 08N140W. Scattered moderate convection is noted from 04N to 07N between 80W and 90W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Please see the Special Features section above for details on the latest Gulf of Tehuantepec gale force gap wind event as well as information on T.D. Terry and T.S. Sandra. Elsewhere, a surface ridge extends SE to the W of Baja California Sur to near 23N115W. The pressure gradient across the region is supporting light to gentle northerly winds across the waters west of the Baja California peninsula, inside the Gulf of California and across the SW Mexico offshore waters. Seas are in the 6-9 ft range in mixed swell, except for 1-3 ft in the Gulf of California. Winds will diminish below gale force in the Gulf of Tehuantepec through this morning, and may briefly reach near gale force tonight. Afterwards, winds will remain strong through early Wed. Gentle to locally moderate northerly winds are expected to prevail across the Baja offshore waters through Tue then become moderate to fresh Tue night through early Thu, except for strong winds N of Punta Eugenia on Wed. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR Light to gentle winds are N of the monsoon trough and gentle to moderate SW to W winds prevail S of the monsoon trough. Seas of 5-6 ft prevail in SW swell across the discussion waters. Offshore gap winds will pulse from fresh to strong over the Gulf of Papagayo each night for the next several days. Gentle to moderate SW winds will persist S of the monsoon trough. REMAINDER OF THE AREA... Please see special features section above for more on T.D. Terry and T.S. Sandra. The pressure gradient between high pressure across the northern waters 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 22N and W of 120W, with gentle to moderate winds N of 24N. Gentle to moderate winds prevail south of the monsoon trough and ITCZ. Seas are in the 7-9 ft range in mixed NW and S swell over the waters north of 10N and west 115W. Seas in the 6-8 ft range prevail elsewhere. The NW swell will gradually decay today. A cold front will brush the far NW waters today, preceded by fresh SW to W winds and seas to near 9 ft across the far NW waters W of 128W. High pressure will then settle across the northern waters through mid week. $$ AL