000 AXPZ20 KNHC 261605 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1533 UTC Fri Jun 26 2020 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 1530 UTC. ...SPECIAL FEATURES... Tropical Depression Boris is centered near 12.0N 139.0W at 26/1500 UTC moving WNW at 6 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Scattered moderate convection is from 10N to 15N W of 134W. Gradual weakening is forecast during the next couple of days, and Boris is forecast to degenerate to a remnant low pressure area Saturday night or Sunday. 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. ...TROPICAL WAVES... A tropical wave is crossing central America with axis N of 02N near 82W, moving westward at around 15 to 20 kt. Numerous moderate to strong convection is noted from 03N to 10N east of 88W. A tropical wave is N of 07N with axis near 100W, moving westward at around 10 kt. Scattered moderate to strong convection is noted from 07N to 16N between 94W and 102W. A tropical wave is from 04N to 21N with axis near 106W, moving westward at around 10 kt. A 1007 mb low near 15N106W is associated with the wave. Numerous moderate and isolated strong convection is noted from 13N to 22N between 101W and 108W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from 07N78W to 08N90W to low pressure near 15N106W to low pressure near 14N123W to 10N135W. Aside from the convection associated with Tropical Depression Boris and the three tropical waves, scattered moderate convection is from 07N to 12N between 73W and 115W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad 1007 mb low pressure area is near 15N106W along a tropical wave axis. Associated convection is described above in the tropical waves section. Environmental conditions are expected to become only marginally conducive for the development of a tropical cyclone within the next couple of days while the system moves west-northwestward parallel to the coast of Mexico. Even so, a swath of fresh to strong E-SE winds and seas of 8-10 ft will parallel the coast through the weekend with conditions improving early next week. Elsewhere, mainly gentle to moderate NW-N winds prevail offshore of Baja California. Southerly winds remain gentle to moderate in the Gulf of California, east of a trough axis that extends along the Baja peninsula. The trough along the Baja peninsula will support increasing winds and seas in the Gulf of California later today through early next week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong winds will pulse over and downstream of the Papagayo region through early next week. Wave heights will peak around 8 ft each morning. Moderate to occasionally fresh monsoon flow will prevail over the waters S of 10N through this weekend. Looking ahead, building seas are possible W of 85W Mon night through Tue night as monsoonal flow freshens across the region and SW swell propagates through the waters. REMAINDER OF THE AREA... Please see the Special Features section above for more details on Tropical Depression Boris. Moderate to fresh monsoonal flow persists south of the monsoon trough between 90W and 105W. Fresh winds and SW swell are likely producing 7-9 ft combined seas in this region. Moderate to fresh N-NE flow continues between Boris and a high pressure ridge that extends across the northern waters, with seas generally 5-7 ft. A weak low-level circulation is near 14N123W, but associated wind speeds are less than 20 kt. A set of northerly swell will spread south of 30N Sat night through early next week building seas to 7-9 ft N of 27N. Cross-equatorial southerly swell, combined with freshening monsoon flow, will build seas south of the monsoon trough and east of 120W by this weekend. Seas are expected to build to 8-9 ft south of the Equator today through Sun in SW swell, then subside on Mon. Looking ahead, another SW swell event is possible over the far southern waters Tue and Tue night. $$ Ramos