000 AXPZ20 KNHC 170247 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0245 UTC Sat Sep 16 2017 Tropical Weather Discussion for the eastern Pacific Ocean from the Equator to 32N, east of 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 0215 UTC. ...SPECIAL FEATURES... Tropical Storm Norma is centered near 20.2N 110.1W at 17/0300 UTC or about 100 nm NNE of Socorro Island and about 160 nm S of Cabo San Lucas Mexico moving N at 4 kt. Estimated minimum central pressure is 989 mb. Maximum sustained wind speed is 55 kt with gusts to 65 kt. Scattered moderate convection is from 17N to 24N between 107W and 112W. See latest NHC Forecast/Advisory under AWIPS/WMO headers MIATCMEP2/WTPZ22 KNHC for more details. Tropical Storm Otis is centered near 15.9N 127.3W at 17/0300 UTC or about 1070 nm WSW of the southern tip of Baja California moving W at 3 kt. Estimated minimum central pressure is 1003 mb. Maximum sustained wind speed is 40 kt with gusts to 50 kt. Scattered moderate and isolated strong convection is from 13N to 18N between 123W and 129W. See latest NHC Forecast/Advisory under AWIPS/WMO headers MIATCMEP5/WTPZ25 KNHC for more details. ...TROPICAL WAVES... None. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N79W to 10N86W to 08N99W then resumes near 14N130W to 11N140W. Scattered moderate convection is from 04N to 10N between 77W and 85W...from 06N to 12N between 88W and 101W...and from 10N to 14N W of 131W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the special features section for more information about Tropical Storm Norma. Gulf of California...Moderate to strong winds associated with Tropical Storm Norma are forecast across southern portions of the Gulf starting Sunday night through Tuesday night. However... large southerly swells associated with the cyclone are already currently impacting the waters S of 28N. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate SSW winds will prevail S of the monsoon trough through Thursday. Light and gentle variable winds will continue N of the monsoon trough through early Tuesday. The monsoon trough will then lift to the N with moderate to fresh SW winds prevailing. REMAINDER OF THE AREA... Surface high pressure anchored by a 1026 mb high near 37N139W extends SE to the central Baja California offshore waters near 27N115W. Moderate to fresh anticyclonic flow is expected elsewhere N of the monsoon trough W of 115W through Wednesday. $$ HUFFMAN