754 AXPZ20 KNHC 301530 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1510 UTC Thu Aug 30 2018 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...SPECIAL FEATURES... Hurricane Norman centered near 17.8N 118.0W at 30/1500 UTC or 550 nm WSW of The Southern Tip Of Baja California moving W at 7 kt. Estimated minimum central pressure is 937 mb. Maximum sustained wind speed is 130 kt with gusts to 160 kt. Numerous moderate to strong convection is within 120 nm of the center. Scattered moderate convection is elsewhere within 180 nm N and 270 nm S of the center. See latest NHC forecast/advisory under AWIPS/WMO headers MIATCMEP1/WTPZ21 KNHC for more details. Hurricane Miriam centered west of the area near 15.3N 141.6W at 1500 UTC, moving NW at 7 kt. Estimated minimum central pressure is 985 mb. Maximum sustained winds are 70 kt with gusts to 85 kt. Numerous moderate isolated strong convection is from 12N to 19N west of 138W. See latest CPHC forecast/advisory under AWIPS/WMO headers TCMCP3/WTPA23 PHFO for more details. ...TROPICAL WAVES... A tropical wave has an axis that extends from 06N93W to 20N94W, moving westward at around 10 kt. Scattered moderate convection is within 90 nm of the wave axis S of 15N. A tropical wave has an axis that extends from 05N108W to 17N108W, moving westward at 10 to 15 kt. Scattered moderate convection is from 10N to 16N between 105W and 109W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from 09N78W to 10N93W to 14N111W, then resumes west of Hurricane Norman near 15N123W to 14N137W. Aside from convection associated with the tropical waves, scattered moderate convection is from 05N to 10N between 83W and 92W, from 07N to 17N between 96W and 105W, and from 07N to 11N between 132W and 139W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge extends over the discussion waters from 30N127W to near 21N112W. The pressure gradient between the high and a trough across the Baja California Peninsula will support moderate to occasionally fresh NW winds along the coast of Baja California Norte through Fri, with seas generally between 4 to 6 ft. Winds will diminish Sat as the pressure gradient weakens. Elsewhere, gentle to moderate winds will prevail in offshore waters of Mexico the next several days with seas of 3 to 6 ft. Low pressure over northern Mexico will support light to gentle southerly flow over the Gulf of California the remainder of the week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... The monsoon trough will linger along 09N/10N during the next few days. Winds on both sides of the trough axis will generally be light to moderate. Seas of 4 to 6 feet can be expected. REMAINDER OF THE AREA... Please see the Special Features section for information on Hurricane Miriam and Hurricane Norman. Elsewhere, the pressure gradient between ridging across the waters N of 20N and the monsoon trough will support moderate to locally fresh trades and 4 to 7 ft seas in mixed swell N of the monsoon trough west of 120W through the remainder of the week, with seas generally between 5 and 7 ft. South of the monsoon trough, expect gentle to moderate winds with seas of 5 to 7 ft. By Sun morning northerly swell to 8 ft may propagate as far S as 29W between 119W and 124W. This swell should diminish below 8 ft by Sun afternoon. $$ Latto